Recruitment, screening, enrollment, and retention statistics, and participant contact information were updated regularly.
Screening, recruitment and retention in this study were difficult because of the fast pace of hospital care, the fact that potential participants were frail and ill and difficulties in obtaining consent in people with mental health problems.
We describe the justification for this study; the development and implementation of these interventions; changes to the protocol; and screening, enrollment, treatment receipt, and retention of study participants.
This paper describes the recruiting strategies, screening methods, enrolment procedures and retention techniques for a cohort of high-risk South African women, consisting largely urban female sex workers, a typically transient and mobile population that formed the basis for the CAPRISA 002 Acute HIV Infection study.
To assess the feasibility of the main trial methodology including the use of a screening tool, subject recruitment and retention, and data collection procedures including economic evaluation to inform the future design of a definitive randomised controlled trial.
To assess the acquisition and retention of screening ophthalmic clinical skills over 3 years of medical school.
VAFO uses four strategies to maximize participant adherence and retention: 1) careful eligibility screening; 2) staff-participant rapport building and motivational interviewing; 3) participant incentives at study visits; and 4) flexible scheduling.
Given discrepancies in discharge and delayed graduation rates and physical performance parameters between anemic and non-anemic trainees, as found in this study, anemia screening and early treatment may influence retention and physical performance during military training.
With optimized IPT uptake and retention, as well as case-screening and treatment delays, an increased (albeit nondurable) impact might have been seen.
The course of recruitment and retention during the efficacy trial, including screening, indication, pre-test, randomization, and training is shown in Figure 1.
