User profiles for "author:Melanie Bell"
Melanie L BellProfessor, University of Arizona, Mel and Enid Zuckerman College of Public Health Verified email at email.arizona.edu Cited by 10695 |
[HTML][HTML] Handling missing data in RCTs; a review of the top medical journals
Background Missing outcome data is a threat to the validity of treatment effect estimates in
randomized controlled trials. We aimed to evaluate the extent, handling, and sensitivity …
randomized controlled trials. We aimed to evaluate the extent, handling, and sensitivity …
[HTML][HTML] Statistical analysis and handling of missing data in cluster randomized trials: a systematic review
Abstract Background Cluster randomized trials (CRTs) randomize participants in groups,
rather than as individuals and are key tools used to assess interventions in health research …
rather than as individuals and are key tools used to assess interventions in health research …
Differential dropout and bias in randomised controlled trials: when it matters and when it may not
Dropout in randomised controlled trials is common and threatens the validity of results, as
completers may differ from people who drop out. Differing dropout rates between treatment …
completers may differ from people who drop out. Differing dropout rates between treatment …
Commercially available pedometers: considerations for accurate step counting
Background. Many commercially available pedometers undercount, especially at slower
speeds. We examined the effects of age, obesity, and self-selected walking speed on …
speeds. We examined the effects of age, obesity, and self-selected walking speed on …
Generalized estimating equations in cluster randomized trials with a small number of clusters: review of practice and simulation study
Background/aims: Generalized estimating equations are a common modeling approach
used in cluster randomized trials to account for within-cluster correlation. It is well known that …
used in cluster randomized trials to account for within-cluster correlation. It is well known that …
[HTML][HTML] Post-acute sequelae of COVID-19 in a non-hospitalized cohort: Results from the Arizona CoVHORT
Clinical presentation, outcomes, and duration of COVID-19 has ranged dramatically. While
some individuals recover quickly, others suffer from persistent symptoms, collectively known …
some individuals recover quickly, others suffer from persistent symptoms, collectively known …
Practical and statistical issues in missing data for longitudinal patient-reported outcomes
ML Bell, DL Fairclough - Statistical methods in medical …, 2014 - journals.sagepub.com
Patient-reported outcomes are increasingly used in health research, including randomized
controlled trials and observational studies. However, the validity of results in longitudinal …
controlled trials and observational studies. However, the validity of results in longitudinal …
[HTML][HTML] Framework for the treatment and reporting of missing data in observational studies: the treatment and reporting of missing data in observational studies …
Missing data are ubiquitous in medical research. Although there is increasing guidance on
how to handle missing data, practice is changing slowly and misapprehensions abound …
how to handle missing data, practice is changing slowly and misapprehensions abound …
Fear of cancer recurrence in young women with a history of early-stage breast cancer: a cross-sectional study of prevalence and association with health behaviours
Purpose Fear of cancer recurrence (FCR) is common and associated with younger age. This
study aimed to explore the prevalence and correlates of FCR amongst younger survivors of …
study aimed to explore the prevalence and correlates of FCR amongst younger survivors of …
[HTML][HTML] Resistant starch consumption promotes lipid oxidation
JA Higgins, DR Higbee, WT Donahoo, IL Brown… - Nutrition & …, 2004 - Springer
Background Although the effects of resistant starch (RS) on postprandial glycemia and
insulinemia have been extensively studied, little is known about the impact of RS on fat …
insulinemia have been extensively studied, little is known about the impact of RS on fat …