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Strategies to Increase Response Rate and Reduce Nonresponse Bias in Population Health Research: Analysis of a Series of Randomized Controlled Experiments during a Large COVID-19 Study.
JMIR Public Health Surveill
January 2025
School of Public Health, Imperial College London, London, United Kingdom.
Background: High response rates are needed in population-based studies, as nonresponse reduces effective sample size and bias affects accuracy and decreases the generalizability of the study findings.
Objective: We tested different strategies to improve response rate and reduce nonresponse bias in a national population-based COVID-19 surveillance program in England, United Kingdom.
Methods: Over 19 rounds, a random sample of individuals aged 5 years and older from the general population in England were invited by mail to complete a web-based questionnaire and return a swab for SARS-CoV-2 testing.
Pediatric Scleral Lenses: 21-Year Retrospective Review.
Clin Optom (Auckl)
December 2024
Department of Mathematical Sciences, Worcester Polytechnic Institute, Worcester, MA, 01609, USA.
Purpose: Retrospective study to review scleral lens outcomes in the pediatric population over a 21-year period, at a single clinical center.
Results: A total of 209 pediatric eyes (108 males and 101 females), distributed between 97 right and 112 left eyes, of which 147 eyes had ocular surface disease and 62 eyes had irregular cornea/refractive conditions, were treated with scleral lenses over a 21-year period. The mean age at the time of treatment initiation was 10.
Teaching Caregivers to Use Graduated Guidance Using Video Modeling.
Behav Anal Pract
December 2024
The New England Center for Children, 33 Turnpike Road, Southborough, MA 01772 USA.
Unlabelled: We evaluated the effects of a video modeling training package on the implementation of graduated guidance instruction for three caregivers of young children with autism spectrum disorder. The video model was narrated and featured a generic model of graduated guidance that was different from the tasks used in the study. One of the caregiver-child dyads participated via telehealth during the COVID-19 pandemic.
View Article and Find Full Text PDFRisk of Incident Cancer in Veterans with Diabetes Who Use Metformin Versus Sulfonylureas.
J Cancer Prev
December 2024
New England Geriatrics Research, Education and Clinical Center (GRECC), VA Boston Healthcare System, Boston, MA, USA.
Prior research suggests metformin has anti-cancer effects, yet data are limited. We examined the association between diabetes treatment (metformin versus sulfonylurea) and risk of incident diabetes-related and non- diabetes-related cancers in US veterans. This retrospective cohort study included US veterans, without cancer, aged ≥ 55 years, who were new users of metformin or sulfonylureas for diabetes between 2001 to 2012.
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