The phrase "attrition differences between" is correct and usable in written English.
It can be used when discussing variations in attrition rates or patterns among different groups or categories.
Example: "The study aimed to analyze the attrition differences between the two cohorts over the course of the year."
Alternatives: "variations in attrition among" or "disparities in attrition between".
Attrition bias: Differences between individuals that are followed up and those who dropout is a concern, and may result in between-arm bias in estimates particularly if dropout is unequal between the two trial arms and analysis fails to take into account appropriate adjustment for missing data.
Follow-up of study units from enrolment to study completion minimizes the risk of attrition bias (systematic differences between groups in withdrawals from a study/loss of samples).
Average CD4+ cell counts and clinic attrition from the study cohort and from the full population of patients initiating ART at Themba Lethu Clinic, our largest study site, were compared to determine if attrition led to differences between the study sample and the overall population of ART patients.
Further, to establish whether participant attrition resulted in any meaningful differences between the attrition and test groups, between-groups comparisons will be conducted.
19 This assessment was essentially qualitative, except in the case of attrition rates where we predefined a quantitative criterion: a cut-off of 15% both for overall attrition rate and for differences between treatment groups (unless otherwise foreseen by the authors).
There were no significant differences between attrition and which psychological therapy was received, educational level, motivational stage of change, BMI, global eating disorder psychopathology.
There were no significant differences between attrition and which therapy was received, educational level, and global ED psychopathology, stage of change, BMI, social adjustment, duration of illness or level of depression.
However, attrition analyses showed no differences between the participating schools and schools which declined to participate in terms of the number of students in the sixth grade and the overall size.
There were no significant differences between attrition and therapy randomized to, educational level, motivational stage of change, BMI, global eating disorder psychopathology, general health related quality of life, social adjustment, duration of illness or level of depression.
Several studies have documented sex differences in TL and, assuming no difference at birth, often inferred that the attrition rate differs between the sexes (reviewed in [ 18]).
