Support for lowering cervical cancer screening age to 25 for women living with HIV: retrospective cross-sectional programmatic data from Botswana.

BACKGROUND: Women living with human immunodeficiency virus (HIV) tend to develop cervical cancer at a younger age than women without HIV. The World Health Organization's (WHO) 2021 guidelines for screening and treatment of cervical pre-cancer lesions for cervical cancer prevention include a conditional recommendation for initiating screening at age 25 for women living with HIV (WLWH). This recommendation is based on low-certainty evidence, and WHO calls for additional data. We describe the association of age and HIV status with visual inspection with acetic acid (VIA) positivity and cervical intraepithelial neoplasia grade two or higher (CIN2+) in Botswana. METHODS: This was a retrospective cross-sectional study of 5714 participants aged 25 to 49 years who underwent VIA screening in a clinic mainly serving WLWH. VIA-positive women received cryotherapy if eligible or were referred for colposcopy and excisional treatment. Known cervical cancer risk factors, screening outcome, and histological results were extracted from the program database. We compared the proportions and association of VIA positivity and CIN2+ by age and HIV status. RESULTS: The median age was 35 years [IQR 31-39], and 18% of the women were aged 25-29. Ninety percent were WLWH; median CD4 count was 250 cells/µL [IQR 150-428], and 34.2% were on anti-retroviral treatment (ART). VIA-positivity was associated with younger age (OR 1.48, CI 1.28, 1.72 for 25-29 years vs. 30-49 years), and HIV-positivity (OR 1.85, CI 1.51, 2.28). CIN2+ was only associated with HIV-positivity (OR 6.12, CI 3.39, 11.10), and proportions of CIN2+ were similar for both age groups in WLWH (69.1% vs. 68.3%). CONCLUSIONS: Younger WLWH in Botswana had a significant burden of CIN2+. This finding further supports lowering the screening age for WLWH from 30 to 25.

Skin conditions among pediatric dermatology outpatients in Botswana.

BACKGROUND: An understanding of the prevalence patterns of skin diseases in children in Botswana is needed to guide national dermatological policy development, training, and resource allocation to improve patient care. OBJECTIVE: To describe local skin disease patterns in children aged 0-18 years presenting for dermatologic care in Botswana. METHODS: A retrospective review of records from 1st January 2011 to 31st December 2016 was conducted at the outpatient dermatology clinic of Princess Marina Hospital (PMH) in Gaborone, Botswana and outreach clinic sites. RESULTS: There were 4413 pediatric visits constituting 18.6% of all dermatology visits. There was a slight male predominance of 1.2:1. The majority of disorders were noninfectious 80.1% (3537/4413) versus infectious 14.6% (645/4413), with 5.2% (231/4413) unclassified. In the noninfectious category, two-thirds were inflammatory, followed by disorders of nails, skin appendages, and pigmentary disorders. Atopic dermatitis was the most common inflammatory disorder. Over half of infectious skin diseases were viral, followed by fungal and bacterial disorders. In the HIV-related disorders, the majority were verrucae 94% (108/115) followed by Kaposi sarcoma. The nine most common skin diagnoses accounted for close to 70% of all skin diseases seen at the clinic, and these included atopic dermatitis (almost half of all cases), followed by verruca, acne, and vitiligo. CONCLUSION: There is a high burden of skin disorders in children in Botswana. In our cohort, a small number of skin conditions made up the vast majority of pediatric diagnoses. This information can be used to guide dermatology training and resource allocation to better manage these common diseases.

Mediation Analysis of a Theory-Based Culture and Age-Appropriate HIV/STI Prevention.

Few studies have investigated mediator effects of HIV prevention interventions on adolescents in sub-Saharan Africa. Herein, we report on a secondary analysis of an intervention that increased intentions to use condoms, abstain from sexual intercourse, and seek safe male circumcision among adolescents in Botswana. In a study conducted in Botswana, 806 grade 9 students from 21 public Junior Secondary Schools were randomly assigned to either the OWN THE FUTURE: Pulling Together We Will" ( PTWW) intervention group or a health promotion control group. Both conditions consisted of 12 1-h modules, with two modules delivered during each of the six sessions on six consecutive school days. The students in both groups completed confidential computer-based surveys at several time points: pre-, immediately post-, 3, 6, and 12 months post-intervention. Mediation was assessed using the product-of-coefficients approach in a generalized estimating equations (GEE) framework. The analyses showed that condom use beliefs were significant mediators of the intervention effect on the intention to consistently use condoms over time. Also, negative socio-cultural beliefs, prevention beliefs, and HIV/STI knowledge were significant mediators of the intervention's effects on the intention to abstain from sex. Additionally, normative beliefs, prevention beliefs, parental negotiation, and circumcision knowledge were significant mediators of the intervention's effect on intention to seek safe male circumcision. The mediation analysis delineated a theoretical model and isolated activities that positively impact condom use, abstinence from sex, and circumcision intentions of Batswana middle school adolescents.

Efficient estimation of human immunodeficiency virus incidence rate using a pooled cross-sectional cohort study design.

Development of methods to accurately estimate human immunodeficiency virus (HIV) incidence rate remains a challenge. Ideally, one would follow a random sample of HIV-negative individuals under a longitudinal study design and identify incident cases as they arise. Such designs can be prohibitively resource intensive and therefore alternative designs may be preferable. We propose such a simple, less resource-intensive study design and develop a weighted log likelihood approach which simultaneously accounts for selection bias and outcome misclassification error. The design is based on a cross-sectional survey which queries individuals' time since last HIV-negative test, validates their test results with formal documentation whenever possible, and tests all persons who do not have documentation of being HIV-positive. To gain efficiency, we update the weighted log likelihood function with potentially misclassified self-reports from individuals who could not produce documentation of a prior HIV-negative test and investigate large sample properties of validated sub-sample only versus pooled sample estimators through extensive Monte Carlo simulations. We illustrate our method by estimating incidence rate for individuals who tested HIV-negative within 1.5 and 5 years prior to Botswana Combination Prevention Project enrolment. This article establishes that accurate estimates of HIV incidence rate can be obtained from individuals' history of testing in a cross-sectional cohort study design by appropriately accounting for selection bias and misclassification error. Moreover, this approach is notably less resource-intensive compared to longitudinal and laboratory-based methods.

Revealing a safer sex option to reduce HIV risk: a cluster-randomized trial in Botswana.

BACKGROUND: 1.8 million new HIV infections occur every year, disproportionately affecting adolescent girls and young women. Abstinence-only risk avoidance approaches have had limited impact on reducing new infections. This cluster-randomized trial examines a risk reduction approach to curbing risky sex for school-going girls in Botswana. METHODS: The unit of randomization was the school (n = 229). Intervention participants received a 1-h intervention revealing a safer sex option: dating same-age partners which have 5-9x lower HIV prevalence than older partners. Primary outcomes were pregnancy as a proxy for unprotected sex and HIV. Secondary outcomes included self-reported sexual behavior. Generalized linear multilevel models with school-level robust variance for adjusted relative risk ratios were used in an intention-to-treat analysis. RESULTS: At a 12-month follow up, the intervention reduced pregnancy with an adjusted Relative Risk Ratio (aRRR) of .657 [95% CI .433-.997] significant at the 5% level. Effects were largest at junior school (aRRR = .575 [95% CI .394-.841]) and in rural areas (aRRR = .518 [95% CI .323-.831]), significant at the 1% level. There were no significant effects for primary school students, suggesting age of sexual debut and related mechanisms are critical factors in the intervention's effectiveness. Moreover, baseline beliefs of which partner is riskiest mediate the magnitude of effects. CONCLUSIONS: Information on safe sex options can change sexual behavior. The success of the intervention working across contexts will depend on various factors, such as age of sexual debut and baseline beliefs. TRIAL REGISTRATION: Pan African Clinical Trials Registry PACTR201901837047199 . Registered 31 December 2018. Retrospectively registered. This study adheres to CONSORT guidelines.

Orphans' perspectives on grief and loss in Botswana.

This paper seeks to examine orphaned children's experiences on grief and loss in Botswana, and its impact on their well-being and make policy recommendations. A cross sectional design which utilized survey questionnaires was employed. Data were collected from 11 districts (3 urban and 8 rural) among orphan children aged 10-18 years. Chi-squared test was used to identify variables believed to be associated with loss and grief. Unadjusted (simple) and adjusted multiple logistic regression was used to investigate factors associated with loss. Of the 732 participants (53.1%) were females and mean age was 13.5 years (SD = 2.7); and 44.6% of these children had experienced death of a close family member in the past year which had been communicated. Children had access to education, lower primary (19.5%), upper primary (39.1%), junior secondary (32.5%), senior secondary school (6.6%), and (0.3%) in tertiary institutions. Most children (88.6%) had not experienced stigma and discrimination at school; 55.2% lived with grandparents, aunts (23.4%), siblings (11.8%), uncles (4.0%), other relatives (3.5%) and non-relatives (0.1%). Unadjusted logistic regression indicated that loss was significantly associated with having someone to talk to (OR = 0.72, 95% CI, 0.53-0.98, p = 0.03), change of residence (OR = 3.08, 95% CI, 1.94-4.90, p < 0.01), having siblings (OR = 2.06, 95% CI, 1.38-3.07, p < 0.01) and being from urban areas (OR = 0.56, 95% CI, 0.41-0.78, p < 0.01). In the adjusted model, loss was significantly associated with change of residence (OR = 2.72, 95% CI, 1.69-4.35, p < 0.01), having siblings (OR = 1.98, 95% CI, 1.30-3.01, p < 0.01) and being from urban areas (OR = 0.65, 95% CI, 0.46-0.93, p = 0.02). Age-specific interventions aimed at addressing the emotional, psychosocial and economic impacts of grief and loss are critical in preventing negative coping behaviors and improving the quality of life of orphans.

Health, schooling, needs, perspectives and aspirations of HIV infected and affected children in Botswana: a cross-sectional survey.

BACKGROUND: Antiretroviral treatment means many HIV infected children are surviving with a highly stigmatised condition. There is a paucity of data to inform policies for this growing cohort. Hence we carried out a study on the health, schooling, needs, aspirations, perspectives and knowledge of HIV infected and affected children in Botswana. METHODS: A cross-sectional survey using interviews and focus group discussions among HIV infected children aged 6-18 years versus HIV aged matched HIV uninfected counterparts living in the same households between August 2010 and March 2011. Supplemental clinical data was abstracted from medical records for HIV infected participants. RESULTS: Nine hundred eighty-four HIV infected and 258 affected children completed the survey. Females predominated in the affected group (63.6 % versus 50.3 %, P < 0.001). School attendance was high in both groups (98.9 % versus 97.3 %, P = 0.057). HIV infected children were mostly in primary school (grades 3-7) while affected children were mostly in upper primary or secondary grades. Sixty percent HIV infected children reported having missed school at least 1 day in the preceding month. Significantly more infected than affected children reported experiencing problems at school (78 % versus 62.3 %, P < 0.001). Twenty-two percent of 15-18 year old HIV infected children were in standard seven and below compared to only 8 % of HIV affected children (p = 0.335). School related problems included poor grades, poor health/school attendance, stigma and inadequate scholastic materials. The wish-list for improving the school environment was similar for both groups and included extra learning support; better meals; protection from bullying/teasing; more scholastic materials, extracurricular activities, love and care; structural improvements; improved teacher attendance and teaching approaches. Significantly more HIV infected children reported feeling hungry all the time (50.6 % versus 41 %, P = 0.007) and more trouble hearing (26.8 % versus 12.5 %, P = 0.028). The mean age for HIV disclosure 10 years was high. Sexual activity (9.2 % versus 3 %, P = 0.001) and emotions of anger (71 % versus 55.3 %, P < 0.001) were significantly higher among HIV affected children. Future perspectives were equally positive (93 % versus 96 %, P = 0.080), were predicated on children's school performance, self-belief/determination and/or ARVs and preference for medical or military careers was common. CONCLUSIONS: In Botswana almost all school-age HIV infected and affected children are attending school but many face daunting challenges that call for the creation of an empowering, empathetic, supportive, caring, and non-discriminating school environment.

Application of the Marshall-Olkin-Weibull logarithmic distribution to complete and censored data.

In contemporary statistical research, there has been a notable surge of interest surrounding a suggested extension of the Marshall-Olkin-G distributions. The present extension exhibits a higher degree of flexibility in comparison to its parent distributions. In a similar manner, we present in this context an expansion of the Marshall-Olkin-G distributions proposed by statistical scholars. This study utilizes a specific variant of the extension known as the Marshall-Olkin-Weibull Logarithmic model, which is applied to both complete and censored data sets. It is evident that the aforementioned model has strong competitiveness in accurately characterizing both complete and censored observations in lifetime reliability issues, when compared to other comparative models discussed in this research work.

A likelihood estimation of HIV incidence incorporating information on past prevalence.

SUMMARY: The prevalence and incidence of an epidemic are basic characteristics that are essential for monitoring its impact, determining public health priorities, assessing the effect of interventions, and for planning purposes. A direct approach for estimating incidence is to undertake a longitudinal cohort study where a representative sample of disease free individuals are followed for a specified period of time and new cases of infection are observed and recorded. This approach is expensive, time consuming and prone to bias due to loss-to-follow-up. An alternative approach is to estimate incidence from cross sectional surveys using biomarkers to identify persons recently infected as in (Brookmeyer and Quinn, 1995; Janssen et al., 1998). This paper builds on the work of Janssen et al. (1998) and extends the theoretical framework proposed by Balasubramanian and Lagakos (2010) by incorporating information on past prevalence and deriving maximum likelihood estimators of incidence. The performance of the proposed method is evaluated through a simulation study, and its use is illustrated using data from the Botswana AIDS Impact (BAIS) III survey of 2008.

Prevalence and Associated Risk Factors of Anemia Among Hospitalized Children in a Tertiary Level Hospital in Botswana.

Anemia is a global health concern and has been associated with long term cognitive and behavioral adverse effects. A cross sectional study was conducted to determine the prevalence of and risk factors for anemia in infants and children between 6 months to 5 years of age admitted to a tertiary hospital in Botswana. Baseline full blood count of every patient admitted during the study period was assessed to determine if anemia was present. Data were collected from patient's medical inpatient chart, electronic medical record (Integrated Patient Management System (IPMS)), and through interviewing parents and caregivers. Multivariate logistic regression model was used to identify risk factors of anemia. A total of 250 patients were included in the study. Prevalence of anemia in this cohort was 42.8%. There were 145 (58%) males. Of the patients with anemia, 56.1%, 39.2%, and 4.7% had mild, moderate, and severe anemia, respectively. Microcytic anemia consistent with iron deficiency was identified in 61 (57%) patients. Age was the only independent predictor of anemia. Children aged 24 months and more had a 50% lower risk of having anemia than their younger counterparts (odds ratio (OR) 0.52; 95% Confidence Interval (95% CI) 0.30 to 0.89). The findings of this study demonstrate anemia as a serious health concern in the pediatric population in Botswana.