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1.
Neuropsychol Rev ; 34(1): 67-97, 2024 Mar.
Article in English | MEDLINE | ID: mdl-36633798

ABSTRACT

People with epilepsy frequently express concern about the burden of memory problems in their everyday lives. Self-report memory questionnaires may provide valuable insight into individuals' perceptions of their everyday memory performance and changes over time. Yet, despite their potential utility, the measurement properties of self-report memory questionnaires have not been evaluated in epilepsy. This systematic review aimed to provide a critical appraisal of the measurement properties of self-report memory questionnaires for adults with epilepsy. Following protocol registration (PROSPERO CRD42020210967), a systematic search of PubMed, EMBASE, Web of Science, CINAHL, and PsychInfo from database inception until 27 May 2021 was conducted. Eligible studies were published in English-language peer-reviewed journals, recruited adults with epilepsy, and reported on the development or evaluation of the measurement properties of a self-report memory questionnaire. The COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) methodology was used to evaluate each study of a measurement property, and results were qualitatively synthesised. In total, 80 articles and one test manual were located containing 153 studies of measurement properties pertinent to 23 self-report memory questionnaires. Overall, no scale could be recommended outright for the evaluation of subjective memory symptoms in adults with epilepsy. This was due to the near absence of dedicated content validation studies relevant to this population and shortcomings in the methodology and scientific reporting of available studies of structural validity. Recommendations to support the advancement and psychometric validation of self-report memory questionnaires for people with epilepsy are provided.


Subject(s)
Epilepsy , Adult , Humans , Psychometrics , Surveys and Questionnaires , Reproducibility of Results
2.
Hong Kong J Occup Ther ; 36(2): 118-127, 2023 Dec.
Article in English | MEDLINE | ID: mdl-38027051

ABSTRACT

Objective: This study aimed to investigate the effectiveness of an abridged version of the Illness Management and Recovery Programme (AIMR) that was modified and developed in Hong Kong through a mult-centre randomized controlled trial for patients with schizophrenia spectrum disorders. Methods: This study was implemented in 10 occupational therapy departments, psychiatric day hospitals of 7 Hospital Authority clusters in Hong Kong. A total of 211 patients with schizophrenia or schizoaffective disorder was recruited and randomized into either the experimental or the control condition. In the control group, the subjects went through conventional occupational therapy programmes. In the experimental group, the subjects went through an additional 10-session programme of AIMR. Participants: were measured at baseline, completion of the AIMR, and 3-month after the AIMR programme. Measures include the expanded version of the Brief Psychiatric Rating Scale (BPRS-E), the client version of the Illness Management and Recovery Scale (IMRS), the Snyder Hope Scale, the Social and Occupational and Occupational Functioning Assessment Scale (SOFAS), the WHO Quality of Life Scale (WHOQOL-BREF), and the Chinese Version of the Short Warwick-Edinburgh Mental Well-Being Scale (C-SWEMWBS). Results: Both the experimental and control cohorts had comparable clinical and socio-demographic characteristics except years of education and duration of illness. These two variables were entered as covariates in the linear mixed model which showed that the experimental group had significantly higher improvement than the control group in terms of illness management (F = 4.82; p = .03; Cohen's d = .45), functional (F = 10.65; p = .001; Cohen's d = .58), and hope (F = 5.52; p = .02; Cohen's d = .08) measures after the completion of treatment. Conclusion: The results supported the effectiveness of the AIMR programm which would be important in the recovery oriented practices in psychiatry.

3.
Eur Heart J Open ; 3(4): oead043, 2023 Jul.
Article in English | MEDLINE | ID: mdl-37608844

ABSTRACT

Aims: Dynamic left ventricular (LV) outflow tract obstruction (LVOTO) is associated with symptoms and increased risk of developing heart failure in hypertrophic cardiomyopathy (HCM). The association of LVOTO and LV twist mechanics has not been well studied in HCM. The aim of the study was to compare the pattern of LV twist in patients with HCM associated with asymmetrical septal hypertrophy with and without LVOTO. Methods and results: Echocardiography (including speckle tracking) was performed in 212 patients with HCM, divided according to the absence (n = 130) or presence (n = 82) of LVOTO (defined as peak pressure gradient ≥30 mmHg either at rest and/or with Valsalva manoeuvre). Patients with LVOTO were older, had smaller LV dimensions, a higher LV ejection fraction (LVEF), a longer anterior mitral valve leaflet length, and a higher early transmitral pulsed wave to septal tissue Doppler velocity ratio (E/E'). A univariate analysis showed that peak twist was significantly higher in patients with LVOTO compared with patients without LVOTO (19.7 ± 7.3 vs. 15.7 ± 6.0, P = 0.00015). Peak twist was similarly enhanced in patients with LVOTO, manifesting only during Valsalva (19.2 ± 5.6, P = 0.007) and patients with resting LVOTO (19.9 ± 8.0, P = 0.00004) compared with patients without LVOTO (15.7 ± 6.0). A stepwise forward logistic regression analysis showed that LVEF, LV end-systolic dimension indexed to body surface area, anterior mitral valve leaflet length, E/E', and peak twist were all independently associated with LVOTO. Conclusion: This study demonstrates that increased peak LV twist is independently associated with LVOTO in patients with HCM. Peak twist was similarly exaggerated in patients with only latent LVOTO, suggesting that it may play a contributory role to LVOTO in HCM.

7.
Heart Lung Circ ; 29(4): 556-565, 2020 Apr.
Article in English | MEDLINE | ID: mdl-31982299

ABSTRACT

Hypertrophic cardiomyopathy (HCM) is the most common cardiovascular genetic disorder. While our mechanistic understanding has been informed by elegant gene discovery studies that led to the term "disease of the sarcomere", more recent investigations have challenged the single-gene hypothesis. Multimodality imaging has allowed better phenotyping to facilitate early diagnosis, identify treatable phenocopies, and guide management. While HCM remains an important cause of sudden death, recent studies have reported a substantial cumulative burden of heart failure and atrial fibrillation in middle-aged and older individuals. Nonetheless, improvements in risk stratification have allowed early intervention to transition HCM from being a common cause of sudden death in the young to a treatable chronic disease.


Subject(s)
Atrial Fibrillation , Cardiomyopathy, Hypertrophic , Death, Sudden, Cardiac , Heart Failure , Aged , Atrial Fibrillation/diagnosis , Atrial Fibrillation/genetics , Atrial Fibrillation/mortality , Atrial Fibrillation/therapy , Cardiomyopathy, Hypertrophic/diagnosis , Cardiomyopathy, Hypertrophic/genetics , Cardiomyopathy, Hypertrophic/mortality , Cardiomyopathy, Hypertrophic/therapy , Female , Genetic Diseases, Inborn/diagnosis , Genetic Diseases, Inborn/genetics , Genetic Diseases, Inborn/mortality , Genetic Diseases, Inborn/therapy , Heart Failure/diagnosis , Heart Failure/genetics , Heart Failure/mortality , Heart Failure/therapy , Humans , Male , Middle Aged
8.
Heart Lung Circ ; 29(5): 703-709, 2020 May.
Article in English | MEDLINE | ID: mdl-31320256

ABSTRACT

BACKGROUND: Three-dimensional echocardiography (3D-Echo) performed by novice health care staff to measure left ventricular ejection fraction (LVEF) could allow cost-effective screening and monitoring for left ventricular systolic dysfunction (LVSD) prior to the development of heart failure. The aim of this study was to determine feasibility and accuracy of cardiac nurses (after completing focussed training) independently acquiring 3D-Echo images, and measuring LVEF using semi-automated software when compared to an echosonographer. METHODS: One echosonographer and three cardiac nurses acquired 3D-Echo images on 73 patients (62 ± 16 years, 62% male) with good image quality, and subsequently measured LVEF using a semi-automated algorithm. RESULTS: Overall feasibility was 89% with the three nurses successfully acquiring 3D-Echo images suitable for LVEF assessment in 65 of the 73 patients. High accuracy (r = 0.82; p < 0.0001) with minimal bias (+0.1, -10.6 to +10.8 limits of agreement; p = 0.91) was observed comparing the nurses to the echosonographer for measuring LVEF. Individual nurses demonstrated high feasibility (86%-92%), accuracy (r = 0.83-0.87; all p < 0.0001) and intra-observer reproducibility (r = 0.96-0.97; all p < 0.0001), with good inter-observer consistency in accuracy compared to the echosonographer (one-way analysis of variance p = 0.559). CONCLUSIONS: We have demonstrated that, following a focussed training protocol, it was feasible for cardiac nurses to acquire 3D-Echo images of sufficient image quality to allow measurement of LVEF using a semi-automated algorithm, with comparable accuracy and intra-observer variability to an expert echosonographer. This could potentially allow the broader application of echocardiography to screen for LVSD in high-risk cohorts.


Subject(s)
Algorithms , Echocardiography, Three-Dimensional/standards , Heart Failure/diagnosis , Heart Ventricles/diagnostic imaging , Stroke Volume/physiology , Ventricular Dysfunction, Left/diagnosis , Ventricular Function, Left/physiology , Echocardiography, Three-Dimensional/nursing , Feasibility Studies , Female , Heart Failure/physiopathology , Heart Ventricles/physiopathology , Humans , Male , Middle Aged , ROC Curve , Ventricular Dysfunction, Left/physiopathology
9.
Am J Cardiol ; 125(4): 507-512, 2020 02 15.
Article in English | MEDLINE | ID: mdl-31836128

ABSTRACT

The E/e' ratio has an established role in the assessment of left ventricular filling pressure (LVFP) in stable patients, but its accuracy in acute myocardial ischemia is less well established. The aim of this study was to validate the relation between the E/e' ratio and invasively measured LVFP in patients with non-ST elevation myocardial infarction (NSTEMI). A total of 120 unselected patients with NSTEMI underwent cardiac catheterization with measurement of left ventricular end-diastolic pressure (LVEDP; elevated ≥15 mm Hg) and Doppler echocardiography with either simultaneous (n = 30) or same-day (n = 90) measurement of E/e'. Patients were aged 64.1 ± 11.8 years, 72% were male and mean left ventricular ejection fraction was 48.0 ± 20.9%. Septal, lateral, and average E/e' ratios all showed a significant correlation with LVEDP (Pearson's r: 0.42, 0.43, 0.48, respectively [all p <0.001]). Receiver operating characteristics curves showed an area under the curve of 0.72, 0.72, and 0.75 (all p <0.001) for septal, lateral, and average E/e', respectively. The sensitivity, specificity, positive (PPV), and negative (NPV) predictive values for the guideline-recommended threshold of average E/e' >14 for elevated LVEDP was 27%, 93%, 79%, and 44%, respectively. Utilizing lower E/e' boundaries of 6, 7, and 8 for lateral, average, and medial E/e', respectively, improved the NPV to ≥80% for each parameter. In conclusion, the E/e' ratio is a robust measure of LVFP during acute NSTEMI using upper and lower thresholds to achieve a high PPV and NPV, respectively, with the use of adjunctive guideline-recommend measures required in patients with nonconclusive E/e'.


Subject(s)
Non-ST Elevated Myocardial Infarction/physiopathology , Ventricular Dysfunction, Left/physiopathology , Ventricular Pressure , Aged , Cardiac Catheterization , Coronary Angiography , Echocardiography, Doppler , Female , Hemodynamics , Humans , Male , Middle Aged , Non-ST Elevated Myocardial Infarction/diagnostic imaging , Prospective Studies , Sensitivity and Specificity , Stroke Volume , Ventricular Dysfunction, Left/diagnostic imaging
10.
J Ment Health ; 28(2): 206-212, 2019 Apr.
Article in English | MEDLINE | ID: mdl-30449213

ABSTRACT

BACKGROUND: The Recovery Self-Assessment (RSA) is a popular and well-validated instrument for assessing recovery-oriented service around the world. AIMS: This study aims to develop a Chinese version of the RSA, which assesses the recovery orientation of hospital-based mental health services. METHODS: We conducted forward and backward translations of the RSA and modify the translated Chinese based on comments by content experts. We recruited 350 people with mental illnesses who regularly attend hospital and community mental health services. The participants completed the Chinese Recovery Self-Assessment Service User version (CRSA-SU) and convergent measures on hope and mental well-being. RESULTS: The Rasch analysis supported five of the six factors in the instrument and suggests that the "Life Goal" factor could be further split into two factors. We identified three misfit items (items 6, 12 and 17) that could be considered for removal. Both the internal consistency and test-retest reliability are between satisfactory and very good within each subscale, with the exception of the Choice subscale. The seven subscales had low positive correlations with measures of hope and mental well-being, which supported the convergent validity of CRSA-SU. CONCLUSIONS: The results supported the factor structure, reliability and validity of the CRSA-SU.


Subject(s)
Diagnostic Self Evaluation , Mental Disorders/rehabilitation , Patient Outcome Assessment , Psychiatric Status Rating Scales/standards , Adult , Asian People , Female , Humans , Male , Middle Aged , Psychiatric Rehabilitation , Psychometrics , Reproducibility of Results
11.
J Subst Abuse Treat ; 94: 41-46, 2018 11.
Article in English | MEDLINE | ID: mdl-30243416

ABSTRACT

BACKGROUND: Methadone maintenance therapy (MMT) continues to be a key treatment for opioid use disorder, although premature discontinuation of MMT can increase risk for overdose and other severe harms. We examined sociodemographic characteristics, substance use patterns and social-structural exposures associated with MMT discontinuation among a cohort of people who use drugs (PWUD) in Vancouver, Canada. METHODS: Data were derived from VIDUS and ACCESS, prospective cohorts of PWUD in Vancouver, Canada. The outcome of interest was self-reported discontinuation of MMT within the last six months. Multivariable Generalized Estimating Equations (GEE) were conducted to identify factors independently associated with MMT discontinuation. RESULTS: Between 2005 and 2015, 1301 PWUD who had accessed MMT were recruited, among whom 288 (22.1%) discontinued MMT at least once during the study period. In multivariable GEE analyses, homelessness (Adjusted Odds Ratio [AOR] = 1.46, 95% Confidence Interval [95% CI]: 1.09-1.95), daily heroin injection (AOR = 5.17, 95% CI: 3.82-6.99), daily prescription opioid use (injection or non-injection) (AOR = 2.18, 95% CI: 1.30-3.67), recent incarceration (AOR = 1.46, 95% CI: 1.01-2.12), and not being on any form of income assistance (AOR = 2.14, 95% CI: 1.33-3.46) were each independently positively associated with MMT discontinuation. Participants with more study visits on methadone (>50% vs. ≤50% of visits) (AOR = 0.63, 95% CI: 0.47-0.85) and those with higher methadone dose (>100 mg vs. <60 mg per day) (AOR = 0.44, 95% CI: 0.31-0.62) were less likely to discontinue MMT. DISCUSSION AND CONCLUSIONS: Discontinuation of MMT in this urban setting was associated with recent homelessness and incarceration, not accessing social income assistance, as well as daily prescription opioid use and daily heroin injection drug use. These findings underscore a need to reduce potential barriers to MMT retention by providing access to stable housing and preventing treatment interruptions during transitions between community and custodial settings.


Subject(s)
Methadone/administration & dosage , Opiate Substitution Treatment/methods , Opioid-Related Disorders/rehabilitation , Substance Abuse, Intravenous/rehabilitation , Adult , British Columbia , Cohort Studies , Female , Heroin Dependence/rehabilitation , Humans , Male , Middle Aged , Prospective Studies , Urban Population , Withholding Treatment
12.
Am J Surg ; 215(5): 863-866, 2018 05.
Article in English | MEDLINE | ID: mdl-29366486

ABSTRACT

Pre-operative radiotherapy (PRT) and total mesorectal excision surgery (TME) for rectal cancer yield the lowest risk for local recurrence. However, both treatments negatively impact quality of life (QOL). To understand individual treatment effects, we ask whether PRT affects function and quality of life before TME. Function and QOL were prospectively assessed in 26 patients using EORTC QLQ-C30/-CR38, and Wexner scale at three time points: before PRT, 6 weeks after PRT and before TME, and one year after stoma closure. Wexner score did not change post-PRT but did increase post-TME (p < .01). Micturition score did not change with PRT or TME (p = .29). Sexual function score improved post-PRT (p = .03) but did not change post-TME. Global health status did not change post-treatments (p = .45). Future perspective improved post-surgery (p = .04). PRT did not affect micturition, bowel function, or QOL. Future perspective improved despite increased bowel problems and fecal incontinence. QOL was maintained after curative rectal cancer treatments, radiation and TME surgery. This information may help patients and physicians better understand effects of PRT and TME treatments for rectal cancer.


Subject(s)
Quality of Life , Recovery of Function , Rectal Neoplasms/physiopathology , Rectal Neoplasms/radiotherapy , Rectal Neoplasms/surgery , Aged , British Columbia , Combined Modality Therapy , Comorbidity , Female , Humans , Male , Middle Aged , Neoplasm Staging , Postoperative Complications , Prospective Studies , Surveys and Questionnaires
13.
Australas J Ultrasound Med ; 21(1): 29-35, 2018 Feb.
Article in English | MEDLINE | ID: mdl-34760498

ABSTRACT

In the intravenous drug user (IVDU) population, infected right-sided valvular lesions are common, and this has been well described in the literature. The Eustachian valve (also known as the valve of the inferior vena cava) is another valve in close proximity to the tricuspid valve, which can, in rare cases, be the focus of infection. Eustachian valve endocarditis may be an under-recognised complication of Staphylococcus bacteraemia in IVDU population, often only identified by transesophageal imaging. We present a case of tricuspid valve endocarditis in an IVDU with secondary seeding on the Eustachian valve, and an accompanying literature review on this rare topic.

14.
Int Psychogeriatr ; 29(7): 1157-1168, 2017 07.
Article in English | MEDLINE | ID: mdl-28349855

ABSTRACT

BACKGROUND: It is well recognized that an individual's personality characteristics influence their psychological adjustment after stroke. However, there is a lack of research on the reliability of personality inventories for stroke. This study primarily aimed to evaluate the reliability of the Neuroticism, Extroversion, Openness to Experience (NEO)-Five Factor Inventory (NEO-FFI) for assessing pre-morbid personality and personality changes after stroke. Further aims were to investigate changes in personality during the hospital-to-home transition period and examine associations between personality and mood. METHODS: Forty participants with stroke (52.5% male, M age=65.55 years) were recruited at time of hospital discharge and completed the NEO-FFI, Centre for Epidemiologic Studies - Depression and Geriatric Anxiety Inventory. Significant others completed an informant version of the NEO-FFI. Stroke participants were re-assessed on the NEO-FFI at 1-month and 4-months post-discharge. Forty matched controls also completed the NEO-FFI. RESULTS: Internal consistency was adequate for the NEO-FFI (α=0.57-0.86), although low for agreeableness. There was fair to excellent concordance between self-rated and informant versions of the NEO-FFI (ICC=0.58-0.78). Significant positive associations were found between neuroticism and mood (r=0.50-0.68), and significant negative associations were found between extraversion and mood (r=-0.33-0.36) and agreeableness and anxiety (r=-0.43). Self-ratings of stroke participants on the NEO-FFI at discharge did not significantly differ from matched controls. Extraversion levels significantly decreased, and agreeableness levels significantly increased between discharge and 1- and 4-months post-discharge. CONCLUSIONS: Overall, the results support the reliability of the NEO-FFI for assessing personality characteristics in the context of stroke.


Subject(s)
Anxiety/psychology , Depression/psychology , Personality Inventory , Personality , Stroke/psychology , Adult , Aged , Aged, 80 and over , Australia , Female , Humans , Male , Middle Aged , Psychiatric Status Rating Scales , Reproducibility of Results , Risk Assessment , Self Report
15.
CASE (Phila) ; 1(1): 28-33, 2017 Feb.
Article in English | MEDLINE | ID: mdl-30062237

ABSTRACT

The investigators present a rare case of myofibrillar cardiomyopathy in an 18-year-old male patient in which echocardiography, cardiac magnetic resonance, and genetic testing played complementary roles. At the top, the parasternal long- and short-axis views of the heart document increased wall thickness and normal systolic function. Significant diastolic dysfunction was present. Cardiac magnetic resonance imaging (bottom) showed delayed enhancement in thickened segments and was not suggestive of cardiac amyloid or hypertrophic cardiomyopathy. Quadriceps muscle biopsy showed histopathology compatible with myofibrillar myopathy. Subsequent genetic testing confirmed a novel desmin gene mutation as the cause.

16.
J Clin Nurs ; 24(11-12): 1479-88, 2015 Jun.
Article in English | MEDLINE | ID: mdl-25256918

ABSTRACT

AIMS AND OBJECTIVES: We aimed to determine the feasibility of training cardiac nurses to evaluate left ventricular function utilising a semi-automated, workstation-based protocol on three dimensional echocardiography images. BACKGROUND: Assessment of left ventricular function by nurses is an attractive concept. Recent developments in three dimensional echocardiography coupled with border detection assistance have reduced inter- and intra-observer variability and analysis time. This could allow abbreviated training of nurses to assess cardiac function. DESIGN: A comparative, diagnostic accuracy study evaluating left ventricular ejection fraction assessment utilising a semi-automated, workstation-based protocol performed by echocardiography-naïve nurses on previously acquired three dimensional echocardiography images. METHODS: Nine cardiac nurses underwent two brief lectures about cardiac anatomy, physiology and three dimensional left ventricular ejection fraction assessment, before a hands-on demonstration in 20 cases. We then selected 50 cases from our three dimensional echocardiography library based on optimal image quality with a broad range of left ventricular ejection fractions, which was quantified by two experienced sonographers and the average used as the comparator for the nurses. Nurses independently measured three dimensional left ventricular ejection fraction using the Auto lvq package with semi-automated border detection. RESULTS: The left ventricular ejection fraction range was 25-72% (70% with a left ventricular ejection fraction <55%). All nurses showed excellent agreement with the sonographers. Minimal intra-observer variability was noted on both short-term (same day) and long-term (>2 weeks later) retest. CONCLUSIONS: It is feasible to train nurses to measure left ventricular ejection fraction utilising a semi-automated, workstation-based protocol on previously acquired three dimensional echocardiography images. Further study is needed to determine the feasibility of training nurses to acquire three dimensional echocardiography images on real-world patients to measure left ventricular ejection fraction. RELEVANCE TO CLINICAL PRACTICE: Nurse-performed evaluation of left ventricular function could facilitate the broader application of echocardiography to allow cost-effective screening and monitoring for left ventricular dysfunction in high-risk populations.


Subject(s)
Echocardiography, Three-Dimensional , Education, Nursing, Continuing/standards , Nursing Diagnosis , Stroke Volume , Ventricular Dysfunction, Left/diagnosis , Adult , Computer-Assisted Instruction , Female , Humans , Male , Middle Aged , Observer Variation , Ventricular Dysfunction, Left/diagnostic imaging
17.
Chest ; 146(5): 1286-1293, 2014 Nov.
Article in English | MEDLINE | ID: mdl-25010364

ABSTRACT

BACKGROUND: The presence of entrapped lung changes the appropriate management of malignant pleural effusion from pleurodesis to insertion of an indwelling pleural catheter. No methods currently exist to identify entrapped lung prior to effusion drainage. Our objectives were to develop a method to identify entrapped lung using tissue movement and deformation (strain) analysis with ultrasonography and compare it to the existing technique of pleural elastance (PEL). METHODS: Prior to drainage, 81 patients with suspected malignant pleural effusion underwent thoracic ultrasound using an echocardiogram machine. Images of the atelectatic lower lobe were acquired during breath hold, allowing motion and strain related to the cardiac impulse to be analyzed using motion mode (M mode) and speckle-tracking imaging, respectively. PEL was measured during effusion drainage. The gold-standard diagnosis of entrapped lung was the consensus opinion of two interventional pulmonologists according to postdrainage imaging. Participants were randomly divided into development and validation sets. RESULTS: Both total movement and strain were significantly reduced in entrapped lung. Using data from the development set, the area under the receiver-operating curves for the diagnosis of entrapped lung was 0.86 (speckle tracking), 0.79 (M mode), and 0.69 (PEL). Using respective cutoffs of 6%, 1 mm, and 19 cm H2O on the validation set, the sensitivity/specificity was 71%/85% (speckle tracking), 50%/85% (M mode), and 40%/100% (PEL). CONCLUSIONS: This novel ultrasound technique can identify entrapped lung prior to effusion drainage, which could allow appropriate choice of definitive management (pleurodesis vs indwelling catheter), reducing the number of interventions required to treat malignant pleural effusion.


Subject(s)
Drainage/methods , Lung/diagnostic imaging , Pleura/diagnostic imaging , Pleural Effusion, Malignant/diagnostic imaging , Aged , Diagnosis, Differential , Elasticity , Female , Follow-Up Studies , Humans , Male , Middle Aged , Pleura/physiopathology , Pleural Effusion, Malignant/therapy , Prospective Studies , ROC Curve , Reproducibility of Results , Tomography, X-Ray Computed , Treatment Outcome , Ultrasonography
18.
J Alzheimers Dis ; 39(2): 371-83, 2014.
Article in English | MEDLINE | ID: mdl-24217281

ABSTRACT

BACKGROUND: Smoking, excessive drinking, and physical inactivity are associated with reduced cognitive function but the independence, domain specific cognitive effects, and trajectories of these associations are not firmly established. OBJECTIVE: Our aim was to examine these lifestyle-cognitive function associations in middle-to-older aged women across time. METHODS: Cohort study design with repeat surveys (2001, 2005, and 2008). Participants were volunteers from a random sample of Australian women on the Brisbane electoral roll; mean (±SD) age 60 ± 11 years in 2001. Outcome measures were the Mini-Mental State Examination (MMSE), Auditory Delayed Index (ADI), Visual Delayed Index (VDI), Working Memory Index (WMI), and Processing Speed Index (PSI). RESULTS: 489 women completed cognitive testing in 2001, 451 in 2005, and 376 in 2008. Mean (±SD) cognitive scores in 2001 were MMSE: 29.1 ± 1.2, ADI: 104.6 ± 13.4, VDI: 107.2 ± 14.0, WMI: 104.1 ± 12.3, and PSI: 102.7 ± 11.8. Multivariate adjusted mean scores (95% CI) over the 7-year study period were higher for moderate drinkers than non-drinkers for the MMSE (ß = 0.32; 0.04, 0.61), the VDI (ß = 4.33; 0.96, 7.70), and the WMI (ß = 3.21; 0.34, 6.07). Current smokers performed worse than never-smokers for the MMSE (ß = -0.35; 0.64, -0.06), the VDI (ß = -3.91; -7.57, -0.26), the WMI (ß = -3.42; -6.67, -0.18), and the PSI (ß = -5.89; -8.91, -2.87). PSI was higher in women performing strenuous physical activity compared to inactive women (ß = 2.14; 0.37, 3.90). None of the three lifestyle parameters influenced the changes in cognition across time. CONCLUSIONS: Alcohol and exercise were associated with selective protective effects and tobacco with selective harmful effects on cognitive function in middle-to-older aged women. Associations remained consistent across time.


Subject(s)
Cognition Disorders/epidemiology , Cognition , Life Style , Adult , Aged , Aging , Alcohol Drinking/epidemiology , Australia/epidemiology , Cohort Studies , Exercise , Female , Follow-Up Studies , Humans , Middle Aged , Multivariate Analysis , Psychological Tests , Sensitivity and Specificity , Smoking/epidemiology , Time Factors
19.
BMC Ear Nose Throat Disord ; 13(1): 6, 2013 May 24.
Article in English | MEDLINE | ID: mdl-23705872

ABSTRACT

BACKGROUND: Excessive ambient noise in school settings is a major concern for school hearing screening as it typically masks pure tone test stimuli (particularly 500 Hz and below). This results in false positive findings and subsequent unnecessary follow-up. With advances in technology, noise-cancelling headphones have been developed that reduce low frequency noise by superimposing an anti-phase signal onto the primary noise. This research study examined the utility of noise-cancelling headphone technology in a school hearing screening environment. METHODS: The present study compared the audiometric screening results obtained from two air-conduction transducers-Sennheiser PXC450 noise-cancelling circumaural headphones (NC headphones) and conventional TDH-39 supra-aural earphones. Pure-tone hearing screening results (500 Hz to 4000 Hz, at 30 dB HL and 25 dB HL) were obtained from 232 school children, aged 6 to 8 years, in four Hong Kong primary schools. RESULTS: Screening outcomes revealed significant differences in referral rates between TDH-39 earphones and NC headphones for both 30 dB HL and 25 dB HL criteria, regardless of the inclusion or exclusion of 500 Hz results. The kappa observed agreement (OA) showed that at both screening intensities, the transducers' referral agreement value for the 500 Hz inclusion group was smaller than for the 500 Hz exclusion group. Individual frequency analysis showed that the two transducers screened similarly at 1000 Hz and 2000 Hz at 25 dB HL, as well as at both 30 dB HL and 25 dB HL screening levels for 4000 Hz. Statistically significant differences were found for 500 Hz at 30 dB HL and at 25 dB HL, and for 1000 Hz and 2000 Hz at 30 dB HL. OA for individual frequencies showed weaker intra-frequency agreement between the two transducers at 500 Hz at both intensity criterion levels than at higher frequencies. CONCLUSIONS: NC headphones screening results differed from those obtained from TDH-39 earphones, with lower referral rates at 500 Hz, particularly at the 25 dB HL criterion level. Therefore, NC headphones may be able to operate at lower screening intensities and subsequently increase pure-tone screening test sensitivity, without compromising specificity. NC headphones show some promise as possible replacements for conventional earphones in school hearing screening programs.

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