Prevalence, risk factors and causes of hearing loss among adults 50 years and older in Santiago, Chile: results from a rapid assessment of hearing loss survey.

OBJECTIVE: Among a representative sample of adults aged 50 years and older too (i) determine the prevalence of hearing loss, (ii) evaluate probable causes and risk factors of hearing loss, and (iii) assess the association between hearing loss measured by audiometry and self-report. DESIGN: A population-based survey of adults aged 50 and older in Santiago, Chile using the Rapid Assessment of Hearing Loss (RAHL) survey. STUDY SAMPLE: 538 participants completed a questionnaire, which included questions on socio-demographic and health characteristics and self-reported hearing loss. Hearing and possible cause of hearing loss was assessed using pure tone audiometry (0.5-4.0 kHz), tympanometry, and otoscopy. RESULTS: The prevalence of any level of hearing loss in adults aged 50 years and older was 41% (95% CI 33.2, 49.2). In terms of aetiologies, 89.3% of ears with mild or worse hearing loss were classified as sensorineural. Otoscopy was abnormal in 10.7% of subjects with impacted earwax being the most common finding (4.4%) followed by chronic otitis media (3.5%). Hearing aid usage was 16.6%. Older age, lower socioeconomic position, lack of education, and solvent exposure were significantly associated with hearing loss. CONCLUSION: Hearing loss among individuals aged over 50 years was common in Santiago, Chile.

Estimating assistive product need in Cameroon and India: results of population-based surveys and comparison of self-report and clinical impairment assessment approaches.

OBJECTIVES: To estimate population need and coverage for distance glasses, hearing aids and wheelchairs in India and Cameroon, and to explore the relationship between assistive product (AP) need measured through self-report and clinical impairment assessment. METHODS: Population-based surveys of approximately 4000 people each were conducted in Mahabubnagar district, India and Fundong district, Cameroon. Participants underwent standardised vision, hearing and musculoskeletal impairment assessment to assess need for distance glasses, hearing aids, wheelchairs. Participants with moderate or worse impairment and/or self-reported difficulties in functioning were also asked about their self-reported AP need. RESULTS: 6.5% (95% CI 5.4-7.9) in India and 1.9% (95% CI 1.5-2.4) in Cameroon of the population needed at least one of the three APs based on moderate or worse impairments. Total need was highest for distance glasses [3.7% (95% CI 2.8-4.7) India; 0.8% (95% CI 0.5-1.1), Cameroon] and lowest for wheelchairs (0.1% both settings; 95% CI 0.03-0.3 India, 95% CI 0.04-0.3 Cameroon). Coverage for each AP was below 40%, except for distance glasses in India, where it was 87% (95% CI 77.1-93.0). The agreement between self-report and clinical impairment assessment of AP need was poor. For instance, in India, 60% of people identified through clinical assessment as needing distance glasses did not self-report a need. Conversely, in India, 75% of people who self-reported needing distance glasses did not require one based on clinical impairment assessment. CONCLUSIONS: There is high need and low coverage of three APs in two low-and middle-income settings. Methodological shortcomings highlight the need for improved survey methods compatible with the international classification of functioning, disability and health to estimate population-level need for AP and related services to inform advocacy and planning.

OBJECTIFS: Estimer les besoins et la couverture de la population en lunettes de distance, appareils auditifs et chaises roulantes en Inde et au Cameroun; et explorer la relation entre les besoins en produits d'assistance (PA) mesurés par l'auto-déclaration et l'évaluation clinique de la déficience. MÉTHODES: Enquêtes de population sur environ 4.000 personnes, chacune menées dans le district de Mahabubnagar, en Inde et dans le district de Fundong, au Cameroun. Les participants ont subi une évaluation standardisée de la vision, de l'audition et des troubles musculosquelettiques pour évaluer les besoins en lunettes de distance, en appareils auditifs et en chaises roulantes. Les participants ayant une déficience modérée ou sévère et/ou des difficultés fonctionnelles autodéclarées ont également été interrogés sur leurs besoins autodéclarés en PA. RÉSULTATS: 6,5% (IC95%: 5,4-7,9) de la population en Inde et 1,9% (IC95%: 1,5-2,4) au Cameroun avait besoin d'au moins l'un des trois PA sur la base de déficiences modérées ou sévères. Le besoin total était le plus élevé pour les lunettes de distance [3,7% (IC95%: 2,8-4,7) Inde; 0,8% (IC95%: 0,5-1,1), Cameroun] et le plus faible pour les chaises roulantes (0,1% dans les deux paramètres; IC95%: 0,03-0,3 Inde, IC95%: 0,04-0,3 Cameroun). La couverture pour chaque PA était inférieure à 40%, sauf pour les lunettes de distance en Inde, où elle était de 87% (IC95%: 77,1-93,0). La concordance entre l'auto-déclaration et l'évaluation clinique de la déficience du besoin en PA était faible. Par exemple, en Inde, 60% des personnes identifiées lors de l'évaluation clinique comme ayant besoin de lunettes de distance n'ont pas autodéclaré un besoin. A l'inverse, en Inde, 75% des personnes qui ont déclaré avoir besoin de lunettes de distance n'en avaient pas besoin sur la base d'une évaluation clinique de la déficience. CONCLUSIONS: Il y a un besoin élevé et une faible offre de trois PA dans deux milieux à revenu faible et intermédiaire. Les lacunes méthodologiques soulignent le besoin de méthodes d'enquête améliorées compatibles avec la classification internationale du fonctionnement, du handicap et de la santé pour estimer les besoins au niveau de la population en PA et en services connexes pour éclairer le plaidoyer et la planification.

Childhood musculoskeletal impairment in Malawi from traumatic and non-traumatic causes: a population- based assessment using the key informant method.

BACKGROUND: Musculoskeletal impairment (MSI) in children is an under-recognised public health challenge. Although preventable, road injuries and other traumas continue to cause significant impairments to children worldwide. The study aimed to use the Key Informant Method (KIM) to assess prevalence and causes of MSI in children in two districts in Malawi, estimating the associated need for services provision, with a focus on traumatic aetiology. METHODS: The KIM was conducted in the districts of Thyolo (Southern Malawi) and Ntcheu (Central Malawi) in 2013. Five hundred key informants were trained to identify children who may have one of a range of MSI. The identified children were referred to a screening camp where they were examined by medical experts with standardised assessment protocols for diagnosing each form of impairment. RESULTS: 15,000 children were referred to screening camps. 7220 children were assessed (response rate 48%) for an impairment of whom 15.2% (1094) had an MSI. 13% of children developed MSI from trauma, while 54% had a neurological aetiology. For MSI of traumatic origin the most common body part affected was the elbow. Less than half of children with MSI (44.4%) were enrolled in school and none of these children attended schools with resources for disability. More than half of children with MSI (60%) had not received required services and 64% required further physical therapy. CONCLUSIONS: The KIM method was used to identify a high prevalence of MSI among children in two districts of Malawi and estimates an unmet need for dedicated MSI services.

Systematic review of interventions for reducing stigma experienced by children with disabilities and their families in low- and middle-income countries: state of the evidence.

OBJECTIVES: To identify and assess the evidence for interventions to reduce stigma experienced by children with disabilities and their families in low- and middle-income settings. METHODS: Systematic review of seven databases (MEDLINE, EMBASE, Global Health, PsycINFO, Social Policy and Practice, CINAHL, IBSS) for studies of interventions that aimed to reduce stigma for children with disabilities published from January 2000 to April 2018. Data were extracted on study population, study design, intervention level(s) and target group, and type(s) of stigma addressed. A narrative approach was used to synthesise the results. RESULTS: Twenty studies were included. The majority (65%) of interventions targeted enacted stigma (negative attitudes) and the most common intervention approach was education/training (63%). Over half (54%) of interventions were delivered at the organisational/institutional level, and only four studies targeted more than one social level. The most common disability targeted was epilepsy (50%) followed by intellectual impairment (20%). The majority of studies (n = 18/20, 90%) found a reduction in a component of stigma; however, most (90%) studies had a high risk of bias. CONCLUSIONS: This review highlights the lack of quality evidence on effective stigma-reduction strategies for children with disabilities. Validation and consistent use of contextually relevant scales to measure stigma may advance this field of research. Studies that involve people with disabilities in the design and implementation of these strategies are needed.

OBJECTIFS: Identifier et évaluer les données des interventions visant à réduire la stigmatisation subie par les enfants avec des invalidités et leurs familles dans les milieux à revenu faible et intermédiaire. MÉTHODES: Revue systématique de sept bases de données (MEDLINE, EMBASE, Global Health, PsycINFO, Social Policy and Practice, CINAHL, IBSS) pour des études d'interventions visant à réduire la stigmatisation des enfants handicapés publiées de janvier 2000 à avril 2018. Les données ont été extraites sur la population étudiée, la conception de l'étude, le(s) niveau(x) d'intervention et le groupe cible, ainsi que le(s) type(s) de stigmatisation abordé(s). Une approche narrative a été utilisée pour synthétiser les résultats. RÉSULTATS: Vingt études ont été incluses. La majorité (65%) des interventions ciblaient la stigmatisation (attitudes négatives) et l'approche d'intervention la plus courante était l'éducation/la formation (63%). Plus de la moitié (54%) des interventions ont été réalisées au niveau organisationnel/institutionnel et seules quatre études ciblaient plus d'un niveau social. L'invalidité la plus fréquemment ciblée était l'épilepsie (50%) suivie de la déficience intellectuelle (20%). La majorité des études (n = 18/20, 90%) ont trouvé une réduction d'une composante de la stigmatisation, mais la plupart (90%) des études présentaient un risque élevé de biais. CONCLUSIONS: Cette revue met en évidence le manque de données probantes de qualité sur les stratégies efficaces de réduction de la stigmatisation pour les enfants handicapés. La validation et l'utilisation cohérente d'échelles contextuellement pertinentes pour mesurer la stigmatisation pourraient faire avancer ce domaine de recherche. Des études impliquant les personnes avec des invalidités dans la conception et la mise en œuvre de ces stratégies sont nécessaires.

Validity of hearing screening using hearTest smartphone-based audiometry: performance evaluation of different response modes.

Objective: To investigate the validity of hearing screening with hearTest smartphone-based audiometry and to specify test duration addressing the two response modes and hearing loss criteria.Design: A diagnostic accuracy study comparing hearing screening with conventional audiometry.Study sample: Three hundred and forty individuals, aged between 5-92 years.Results: Of the 340 participants, 301 undertook all test procedures (273 adults and 28 children). Sensitivity and specificity were >90% for hearTest hearing screening to identify disabling hearing loss for both response modes with adults and children. We found similar sensitivity in identifying any level of hearing loss for both response modes in children, with specificity >80%, and for the self-test mode in adults. Low specificity was observed when identifying any level of hearing loss in adults using the test-operator mode. In adults, there was a significant difference between test duration for the test-operator and self-test modes.Conclusion: Hearing screening using hearTest smartphone-based audiometry is accurate for the identification of both disabling hearing loss and any level of hearing loss in adults and children in the self-test response mode. The test-operator mode is also an option for children; however, it does not provide good accuracy in identifying mild level of hearing loss in adults.

Field test of the Rapid Assessment of Hearing Loss survey protocol in Ntcheu district, Malawi.

Objective: (1) To test the feasibility of the Rapid Assessment of Hearing Loss (RAHL) survey protocol in Malawi (Ntcheu); (2) To estimate the prevalence and probable causes of hearing loss (adults 50+).Design: Cross-sectional population-based survey.Study sample: Clusters (n = 38) were selected using probability-proportionate-to-size-sampling. Within each cluster, 30 people aged 50+ were selected using compact-segment-sampling. All participants completed smartphone-based audiometry (hearTest). Prevalence was estimated using WHO definitions (PTA of thresholds 0.5, 1, 2, 4 kHz in the better ear of >25 dB HL (any) and >40 dB HL (≥moderate)). Otoscopy and questionnaire were used to assess probable causes. Participants with hearing loss and/or ear disease were asked about care-seeking and barriers.Results: Four teams completed the survey in 24 days. 1080 of 1153 (93.7%) participants were examined. The median time to complete the protocol was 24 min/participant. Prevalence of hearing loss was 35.9% (95% CI = 31.6-40.2) (any level); and 10.0% (95% CI = 7.9-12.5) (≥moderate). The majority was classified as probable sensorineural. Nearly one third of people (30.9%) needed diagnostic audiology services and possible hearing aid fitting. Hearing aid coverage was <1%. Lack of perceived need was a key barrier.Conclusion: The RAHL is simple, fast and provides information about the magnitude and probable causes of hearing loss to plan services.

Children with hearing impairment in Malawi, a cohort study.

OBJECTIVE: To assess the outcomes of children diagnosed with hearing impairment 3 years earlier in terms of referral uptake, treatment received and satisfaction with this treatment, and social participation. METHODS: We conducted a population-based longitudinal analysis of children with a hearing impairment in two rural districts of Malawi. Key informants within the community identified the cohort in 2013 (baseline). Informants clinically screened children at baseline, and by questionnaires at baseline and follow-up in 2016. We investigated associations between sociodemographic characteristics and outcomes by multivariate logistic regression. RESULTS: We diagnosed 752 children in 2013 as having a hearing impairment and traced 307 (40.8%) children of these for follow-up in 2016. Referral uptake was low (102/184; 55.4%), more likely among older children (odds ratio, OR: 3.5; 95% confidence interval, CI: 1.2-10.2) and less likely for those with an illiterate caregiver (OR: 0.5; 95% CI: 0.2-0.9). Few of the children who attended hospital received any treatment (33/102; 32.4%) and 63.6% (21/33) of caregivers reported satisfaction with treatment. Difficulty making friends and communicating needs was reported for 10.0% (30/299) and 35.6% (107/301) of the children, respectively. Lack of school enrolment was observed for 29.5% (72/244) of children, and was more likely for older children (OR: 28.6; 95% CI: 10.3-79.6), girls (OR: 2.4; 95% CI: 1.2-4.8) and those with an illiterate caregiver (OR: 2.1; 95% CI: 1.0-4.1). CONCLUSION: More widespread and holistic services are required to improve the outcomes of children with a hearing impairment in Malawi.

Diagnostic accuracy of non-specialist versus specialist health workers in diagnosing hearing loss and ear disease in Malawi.

OBJECTIVE: To determine whether a non-specialist health worker can accurately undertake audiometry and otoscopy, the essential clinical examinations in a survey of hearing loss, instead of a highly skilled specialist (i.e. ENT or audiologist). METHODS: A clinic-based diagnostic accuracy study was conducted in Malawi. Consecutively sampled participants ≥ 18 years had their hearing tested using a validated tablet-based audiometer (hearTest) by an audiologist (gold standard), an audiology officer, a nurse and a community health worker (CHW). Otoscopy for diagnosis of ear pathologies was conducted by an ENT specialist (gold standard), an ENT clinical officer, a CHW, an ENT nurse and a general nurse. Sensitivity, specificity and kappa (κ) were calculated. 80% sensitivity, 70% specificity and kappa of 0.6 were considered adequate. RESULTS: Six hundred and seventeen participants were included. High sensitivity (>90%) and specificity (>85%) in detecting bilateral hearing loss was obtained by all non-specialists. For otoscopy, sensitivity and specificity were >80% for all non-specialists in diagnosing any pathology except for the ENT nurse. Agreement in diagnoses for the ENT clinical officer was good (κ = 0.7) in both ears. For other assessors, moderate agreement was found (κ = 0.5). CONCLUSION: A non-specialist can be trained to accurately assess hearing using mobile-based audiometry. However, accurate diagnosis of ear conditions requires at least an ENT clinical officer (or equivalent). Conducting surveys of hearing loss with non-specialists could lower costs and increase data collection, particularly in low- and middle-income countries, where ENT specialists are scarce.

OBJECTIF: Déterminer si un agent de santé non spécialisé peut effectuer avec précision une audiométrie et une otoscopie, examens cliniques essentiels dans une évaluation sur la perte auditive, à la place d'un spécialiste hautement qualifié (ORL ou audiologiste). MÉTHODES: Etude de la précision du diagnostic en clinique menée au Malawi. Les participants de l'échantillonnage consécutif âgés de 18 ans et plus ont été testés pour l'audition à l'aide d'un audiomètre sur tablette (HearTest) validé par un audiologiste (référence standard), un agent d'audiologie, une infirmière et un agent de santé communautaire (ASC). L'otoscopie pour le diagnostic des pathologies de l'oreille a été réalisée par un spécialiste ORL (référence-standard), un agent clinique ORL, un ASC, un infirmier ORL et un infirmier général. La sensibilité, la spécificité et kappa (k) ont été calculés. Une sensibilité de 80%, une spécificité de 70% et un kappa de 0,6 ont été jugés adéquats. RÉSULTATS: 617 participants ont été inclus. Tous les non-spécialistes ont obtenu une sensibilité (> 90%) et une spécificité (> 85%) élevées dans la détection de la perte auditive bilatérale. Pour l'otoscopie, la sensibilité et la spécificité étaient > 80% pour tous les non-spécialistes dans le diagnostic de toute pathologie à l'exception des infirmiers ORL. La concordance des diagnostics pour l'agent clinique ORL était bonne (k = 0,7) pour les deux oreilles. Pour les autres évaluateurs, une concordance modérée a été trouvée (k = 0,5). CONCLUSION: Un non spécialiste peut être formé pour évaluer avec précision l'audition à l'aide d'une audiométrie mobile. Cependant, un diagnostic précis des problèmes d'oreille nécessite au moins un agent clinique ORL (ou son équivalent). Mener des évaluations sur la perte auditive par des non-spécialistes pourrait réduire les coûts et augmenter la collecte de données, en particulier dans les pays à revenu faible ou intermédiaire, où les spécialistes en ORL sont rares.

Leaving no one behind? Social inclusion of health insurance in low- and middle-income countries: a systematic review.

BACKGROUND: One way to achieve universal health coverage (UHC) in low- and middle-income countries (LMIC) is the implementation of health insurance schemes. A robust and up to date overview of empirical evidence assessing and substantiating health equity impact of health insurance schemes among specific vulnerable populations in LMICs beyond the more common parameters, such as income level, is lacking. We fill this gap by conducting a systematic review of how social inclusion affects access to equitable health financing arrangements in LMIC. METHODS: We searched 11 databases to identify peer-reviewed studies published in English between January 1995 and January 2018 that addressed the enrolment and impact of health insurance in LMIC for the following vulnerable groups: female-headed households, children with special needs, older adults, youth, ethnic minorities, migrants, and those with a disability or chronic illness. We assessed health insurance enrolment patterns of these population groups and its impact on health care utilization, financial protection, health outcomes and quality of care. RESULTS: The comprehensive database search resulted in 44 studies, in which chronically ill were mostly reported (67%), followed by older adults (33%). Scarce and inconsistent evidence is available for individuals with disabilities, female-headed households, ethnic minorities and displaced populations, and no studies were yielded reporting on youth or children with special needs. Enrolment rates seemed higher among chronically ill and mixed or insufficient results are observed for the other groups. Most studies reporting on health care utilization found an increase in health care utilization for insured individuals with a disability or chronic illness and older adults. In general, health insurance schemes seemed to prevent catastrophic health expenditures to a certain extent. However, reimbursements rates were very low and vulnerable individuals had increased out of pocket payments. CONCLUSION: Despite a sizeable literature published on health insurance, there is a dearth of good quality evidence, especially on equity and the inclusion of specific vulnerable groups in LMIC. Evidence should be strengthened within health care reform to achieve UHC, by redefining and assessing vulnerability as a multidimensional process and the investigation of mechanisms that are more context specific.

Prevalence of Hearing Impairment in Mahabubnagar District, Telangana State, India.

OBJECTIVES: To estimate the prevalence of hearing impairment in Mahabubnagar district, Telangana state, India. METHODS: A population-based prevalence survey of hearing impairment was undertaken in 2014. Fifty-one clusters of 80 people aged 6 months and older were selected using probability-proportionate-to-size sampling. A two-stage hearing screening was conducted using otoacoustic emissions on all participants followed by pure-tone audiometry on those aged 4 years and older who failed otoacoustic emissions. Cases of hearing impairment were defined using the World Health Organization definition of disabling hearing impairment: a pure-tone average of thresholds at 500, 1000, 2000, and 4000 Hz of ≥41 dB HL for adults and ≥31 dB HL for children based on the better ear. Possible causes of hearing impairment were ascertained by a certified audiologist. Reported hearing difficulties were also measured in this survey and compared with audiometry results. RESULTS: Three thousand five hundred seventy-three people were examined (response rate 87%), of whom 52% were female. The prevalence of disabling hearing impairment was 4.5% [95% confidence interval (CI) = 3.8 to 5.3). Disabling hearing impairment prevalence increased with age from 0.4% in those aged 4 to 17 years (95% CI = 0.2 to 1.1) to 34.7% (95% CI = 28.7 to 41.1) in those aged older than 65 years. No difference in prevalence was seen by sex. Ear examination suggested that the possible cause of disabling hearing impairment was chronic suppurative otitis media for 6.9% of cases and dry perforation for 5.6% cases. For the vast majority of people with disabling hearing impairment, a possible cause could not be established. The overall prevalence of reported or proxy reported hearing impairment was 2.6% (95% CI = 2.0 to 3.4), and this ranged from 0.6% (95% CI = 0.08 to 4.4) in those aged 0 to 3 years to 14.4% (95% CI = 9.8 to 20.7) in those aged older than 65 years. CONCLUSIONS: Disabling hearing impairment in Telangana State is common, affecting approximately 1 in 23 people overall and a third of people aged older than 65 years. These findings suggest that there are a substantial number of individuals with hearing impairment who could potentially benefit from improved access to low-cost interventions.

Systematic review of strategies to increase access to health services among children over five in low- and middle-income countries.

BACKGROUND: The populations of many low- and middle-income countries (LMIC) are young. Despite progress made towards achieving Universal Health Coverage and remarkable health gains, evidence suggests that many children in LMIC are still not accessing needed healthcare services. Delayed or lack of access to health services can lead to a worsening of health and can in turn negatively impact a child's ability to attend school, and future employment opportunities. METHODS: We conducted a systematic review to assess the effectiveness of interventions aimed at increasing access to health services for children over 5 years in LMIC settings. Four electronic databases were searched in March 2017. Studies were included if they evaluated interventions that aimed to increase: healthcare utilisation, immunisation uptake and compliance with medication/referral. Randomised controlled trials and non-randomised study designs were included in the review. Data extraction included study characteristics, intervention type and measures of access to health services for children above 5 years of age. Study outcomes were classified as positive, negative, mixed or null in terms of their impact on access outcomes. RESULTS: Ten studies met the criteria for inclusion in the review. Interventions were evaluated in Nicaragua (1), Brazil (1), Turkey (1), India (1), China (1), Uganda (1), Ghana (1), Nigeria (1), South Africa (1) and Swaziland (1). Intervention types included education (2), incentives (1), outreach (1), SMS/phone call reminders (2) and multicomponent interventions (4). All evaluations reported positive findings on measured health access outcomes; however, the quality and strength of evidence were mixed. CONCLUSION: This review provides evidence of the range of interventions that were used to increase healthcare access for children above 5 years old in LMIC. Nevertheless, further research is needed to examine each of the identified intervention types and the influence of contextual factors, with robust study designs. There is also a need to assess the cost-effectiveness of the interventions to inform decision-makers on which are suitable for scale-up in their particular contexts.

Children with cerebral palsy in Ghana: malnutrition, feeding challenges, and caregiver quality of life.

AIM: To assess feeding difficulties and nutritional status among children with cerebral palsy (CP) in Ghana, and whether severity of feeding difficulties and malnutrition are independently associated with caregiver quality of life (QoL). METHOD: This cross-sectional survey included 76 children with CP (18mo-12y) from four regions of Ghana. Severity of CP was classified using the Gross Motor Function Classification System and anthropometric measures were taken. Caregivers rated their QoL (using the Pediatric Quality of Life Inventory Family Impact Module) and difficulties with eight aspects of child feeding. Logistic regression analysis explored factors (socio-economic characteristics, severity of CP, and feeding difficulties) associated with being underweight. Linear regression was undertaken to assess the relationship between caregiver QoL and child malnutrition and feeding difficulties. RESULTS: Poor nutritional status was common: 65% of children aged under 5 years were categorized as underweight, 54% as stunted, and 58% as wasted. Reported difficulties with child's feeding were common and were associated with the child being underweight (odds ratio 10.7, 95% confidence interval 2.3-49.6) and poorer caregiver QoL (p<0.001). No association between caregiver QoL and nutritional status was evident. INTERPRETATION: Among rural, low resource populations in Ghana, there is a need for appropriate, accessible caregiver training and support around feeding practices of children with CP, to improve child nutritional status and caregiver well-being. WHAT THIS PAPER ADDS: Malnutrition is very common among children with cerebral palsy in this rural population in Ghana. Feeding difficulties in this population were strongly associated with being underweight. Feeding difficulties were associated with poorer caregiver quality of life (QoL). Child nutritional status was not associated with caregiver QoL.

Correction to: Childhood disability in Malawi: a population based assessment using the key informant method.

Following the publication of this article [1] it was brought to our attention that inadvertently the COSECSA Oxford Orthopaedic Link (COOL) programme was not acknowledged for funding this study.

Prevalence and causes of hearing impairment in Fundong Health District, North-West Cameroon.

OBJECTIVE: To estimate the prevalence and causes of hearing impairment in Fundong Health District, North-West Cameroon. METHODS: We selected 51 clusters of 80 people (all ages) through probability proportionate to size sampling. Initial hearing screening was undertaken through an otoacoustic emission (OAE) test. Participants aged 4+ years who failed this test in both ears or for whom an OAE reading could not be taken underwent a manual pure-tone audiometry (PTA) screening. Cases of hearing impairment were defined as those with pure-tone average ≥41 dBHL in adults and ≥35 dBHL in children in the better ear, or children under age 4 who failed the OAE test in both ears. Each case with hearing loss was examined by an ear, nose and throat nurse who indicated the main likely cause. RESULTS: We examined 3567 (86.9%) of 4104 eligible people. The overall prevalence of hearing impairment was 3.6% (95% confidence interval [CI]: 2.8-4.6). The prevalence was low in people aged 0-17 (1.1%, 0.7-1.8%) and 18-49 (1.1%, 0.5-2.6%) and then rose sharply in people aged 50+ (14.8%, 11.7-19.1%). Among cases, the majority were classified as moderate (76%), followed by severe (15%) and profound (9%). More than one-third of cases of hearing impairment were classified as unknown (37%) or conductive (37%) causes, while sensorineural causes were less common (26%). CONCLUSIONS: Prevalence of hearing impairment in North-West Cameroon is in line with the WHO estimate for sub-Saharan Africa. The majority of cases with known causes are treatable, with impacted wax playing a major role.

Prevalence and causes of musculoskeletal impairment in Fundong District, North-West Cameroon: results of a population-based survey.

OBJECTIVES: Epidemiological data on musculoskeletal conditions such as degenerative joint diseases and bone fractures are lacking in low- and middle-income countries. This survey aimed to estimate the prevalence and causes of musculoskeletal impairment in Fundong Health District, North-West Cameroon. METHODS: Fifty-one clusters of 80 people (all ages) were selected using probability proportionate to size sampling. Households within clusters were selected by compact segment sampling. Six screening questions were asked to identify participants likely to have a musculoskeletal impairment (MSI). Participants screening positive to any screening question underwent a standardised examination by a physiotherapist to assess presence, cause, diagnosis and severity of impairment. RESULTS: In total, 3567 of 4080 individuals enumerated for the survey were screened (87%). The all-age prevalence of MSI was 11.6% (95% CI: 10.1-13.3). Prevalence increased with age, from 2.9% in children to 41.2% in adults 50 years and above. The majority of MSI cases (70.4%) were classified as mild, 27.2% as moderate and 2.4% as severe. Acquired non-trauma comprised 67% of the diagnoses. The remainder included trauma (14%), neurological (11%), infection (5%) and congenital (3%). The most common individual diagnosis was degenerative joint disease (43%). Over one-third (38%) of individuals with MSI had never received medical care or rehabilitation for their condition. CONCLUSIONS: This survey contributes to the epidemiological data on MSI in low- and middle-income countries. Nearly half of adults aged over 50 years had an MSI. There is a need to address the treatment and rehabilitative service gap for people with MSI in Cameroon.

Childhood disability in Malawi: a population based assessment using the key informant method.

BACKGROUND: Epidemiological data on childhood disability are lacking in Low and Middle Income countries (LMICs) such as Malawi, hampering effective service planning and advocacy. The Key Informant Method (KIM) is an innovative, cost-effective method for generating population data on the prevalence and causes of impairment in children. The aim of this study was to use the Key Informant Method to estimate the prevalence of moderate/severe, hearing, vision and physical impairments, intellectual impairments and epilepsy in children in two districts in Malawi and to estimate the associated need for rehabilitation and other services. METHODS: Five hundred key informants (KIs) were trained to identify children in their communities who may have the impairment types included in this study. Identified children were invited to attend a screening camp where they underwent assessment by medical professionals for moderate/severe hearing, vision and physical impairments, intellectual impairments and epilepsy. RESULTS: Approximately 15,000 children were identified by KIs as potentially having an impairment of whom 7220 (48%) attended a screening camp. The estimated prevalence of impairments/epilepsy was 17.3/1000 children (95% CI: 16.9-17.7). Physical impairment (39%) was the commonest impairment type followed by hearing impairment (27%), intellectual impairment (26%), epilepsy (22%) and vision impairment (4%). Approximately 2100 children per million population could benefit from physiotherapy and occupational therapy and 300 per million are in need of a wheelchair. An estimated 1800 children per million population have hearing impairment caused by conditions that could be prevented or treated through basic primary ear care. Corneal opacity was the leading cause of vision impairment. Only 50% of children with suspected epilepsy were receiving medication. The majority (73%) of children were attending school, but attendance varied by impairment type and was lowest among children with multiple impairments (38%). CONCLUSION: Using the KIM this study identified more than 2500 children with impairments in two districts of Malawi. As well as providing data on child disability, rehabilitation and referral service needs which can be used to plan and advocate for appropriate services and interventions, this method study also has an important capacity building and disability awareness raising component.

A systematic review of strategies to increase access to health services among children in low and middle income countries.

BACKGROUND: Universal Health Coverage is widely endorsed as the pivotal goal in global health, however substantial barriers to accessing health services for children in low and middle-income countries (LMIC) exist. Failure to access healthcare is an important contributor to child mortality in these settings. Barriers to access have been widely studied, however effective interventions to overcome barriers and increase access to services for children are less well documented. METHODS: We conducted a systematic review of effectiveness of interventions aimed at increasing access to health services for children aged 5 years and below in LMIC. Four databases (EMBASE, Global Health, MEDLINE, and PSYCINFO) were searched in January 2016. Studies were included if they evaluated interventions that aimed to increase: health care utilisation; immunisation uptake; and compliance with medication or referral. Randomised controlled trials and non-randomised controlled study designs were included in the review. A narrative approach was used to synthesise results. RESULTS: Fifty seven studies were included in the review. Approximately half of studies (49%) were conducted in sub-Saharan Africa. Most studies were randomised controlled trials (n = 44; 77%) with the remaining studies employing non-randomised designs. Very few studies were judged as high quality. Studies evaluated a diverse range of interventions and various outcomes. Supply side interventions included: delivery of services at or closer to home and service level improvements (eg. integration of services). Demand side interventions included: educational programmes, text messages, and financial or other incentives. Interventions that delivered services at or closer to home and text messages were in general associated with a significant improvement in relevant outcomes. A consistent pattern was not noted for the remaining studies. CONCLUSIONS: This review fills a gap in the literature by providing evidence of the range and effectiveness of interventions that can be used to increase access for children aged ≤5 years in LMIC. It highlights some intervention areas that seem to show encouraging trends including text message reminders and delivery of services at or close to home. However, given the methodological limitations found in existing studies, the results of this review must be interpreted with caution. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD420160334200.

The cost-utility of telemedicine to screen for diabetic retinopathy in India.

PURPOSE: To assess the cost-effectiveness of a telemedicine diabetic retinopathy (DR) screening program in rural Southern India that conducts 1-off screening camps (i.e., screening offered once) in villages and to assess the incremental cost-effectiveness ratios of different screening intervals. DESIGN: A cost-utility analysis using a Markov model. PARTICIPANTS: A hypothetical cohort of 1000 rural diabetic patients aged 40 years who had not been previously screened for DR and who were followed over a 25-year period in Chennai, India. METHODS: We interviewed 249 people with diabetes using the time trade-off method to estimate utility values associated with DR. Patient and provider costs of telemedicine screening and hospital-based DR treatment were estimated through interviews with 100 diabetic patients, sampled when attending screening in rural camps (n = 50) or treatment at the base hospital in Chennai (n = 50), and with program and hospital managers. The sensitivity and specificity of the DR screening test were assessed in comparison with diagnosis using a gold standard method for 346 diabetic patients. Other model parameters were derived from the literature. A Markov model was developed in TreeAge Pro 2009 (TreeAge Software Inc, Williamstown, MA) using these data. MAIN OUTCOME MEASURES: Cost per quality-adjusted life-year (QALY) gained from the current teleophthalmology program of 1-off screening in comparison with no screening program and the cost-utility of this program at different screening intervals. RESULTS: By using the World Health Organization threshold of cost-effectiveness, the current rural teleophthalmology program was cost-effective ($1320 per QALY) compared with no screening from a health provider perspective. Screening intervals of up to a frequency of screening every 2 years also were cost-effective, but annual screening was not (>$3183 per QALY). From a societal perspective, telescreening up to a frequency of once every 5 years was cost-effective, but not more frequently. CONCLUSIONS: From a health provider perspective, a 1-off DR telescreening program is cost-effective compared with no screening in this rural Indian setting. Increasing the frequency of screening up to 2 years also is cost-effective. The results are dependent on the administrative costs of establishing and maintaining screening at regular intervals and on achieving sufficient coverage.

Development of mental health and psychosocial support (MHPSS) guidelines for deaf and hard of hearing children in the Gaza Strip.

Deaf and hard of hearing children in the Gaza Strip may be at risk of mental health conditions and psychological distress, as a result of social exclusion and limited accessible communication. This article presents the process and research methods used to develop guidelines for schools in the Gaza Strip on mental health and psychosocial support for deaf and hard of hearing children. The process was guided by the GIN-McMaster guideline development checklist across four steps: (1) priority settings; (2) searching for evidence; (3) developing recommendations; (4) evaluation. Priority setting was spearheaded by local and international researchers, and a local steering committee comprised of deaf and hard of hearing representatives, school administration and staff, mental health specialists, family members and government officials. In searching for evidence, and in order to generate evidence-based recommendations for the guidelines, we utilised a scoping review of global mental health support for deaf and hard of hearing children and qualitative research with deaf and hard of hearing children and adults, families and teachers. Two pilot studies were conducted in mainstream and specialist educational settings as way of evaluation. The scoping review and qualitative research identified various content for the guidelines, including the importance of information on disability and deafness, promoting social inclusion and self-esteem, and accessible learning environments. The pilot studies demonstrated feasibility and acceptability among teachers and deaf and hard of hearing children, although teachers need sufficient support and resources to implement. Now finalised, the guidelines are being distributed to schools in the Gaza Strip to support the mental health and wellbeing of deaf and hard of hearing children.

Prevalence of Cognitive Impairment and Its Association With Hearing Loss Among Adults Over 50 Years of Age: Results From a Population-Based Survey in Santiago, Chile.

PURPOSE: The purpose of this study was to estimate the prevalence of cognitive impairment and explore its association with hearing loss and other sociodemographic and clinical risk factors, using an objective measurement of hearing levels, in adults over 50 years of age. METHOD: A population-based survey was completed in Santiago, Chile between December 2019 and March 2020. Participants were screened for cognitive impairment using the Short Chilean Mini-Mental State Examination and hearing levels were assessed with tonal audiometry (hearTest). Data on demographic, socioeconomic, and clinical characteristics were collected. RESULTS: A total of 538 persons completed the assessment. The prevalence of cognitive impairment in the 50+ population was 9.3% (95% confidence interval [CI] [5.8, 14.7]). Cognitive impairment was significantly higher in individuals with any level of hearing loss (odds ratio [OR] = 2.19, 95% CI [1.00, 4.80], adjusted for age, sex, education, socioeconomic position [SEP], and head trauma). Subjects with hearing loss and who reported any use of hearing aids (16% of the sample) had a lower risk of cognitive impairment (OR of nonusers 3.64, 95% CI [1.00, 13.28], adjusted for age, sex, education, SEP, and head trauma). CONCLUSION: Strategies for addressing cognitive impairment should further explore the integration of early diagnosis of hearing loss and the regular use of hearing aids.