We review the specific role of large-scale trials to test whether bioactives and nutrients have an effect on health outcomes through several crucial components of trial design, including selection of intervention, recruitment, compliance, outcome selection, and interpretation and generalizability of study findings.
The strengths of the study lay in the selection of instruments, recruitment of participants, and conduct of the focus groups.
This analysis resulted in the selection of 40 Recruitment and Retention and 24 Education strategies.
The selection of specific recruitment areas was based on information provided by the police and the National Narcotics Agency.
The research design involved the construction of a culturally tailored data collection instrument and selection of sample recruitment and data collection methods designed to maximise representation and access to Aboriginal and/or Torres Strait Islander women.
To this end the Ministry of Health, with technical assistance from Capacity Plus, conducted a DCE to better inform the selection of appropriate recruitment and retention interventions based on health worker preferences.
Third, based on the self-selection method of recruitment, it is possible that there may be systematic differences between those who choose to sign up for a parenting program and those that do not choose to sign up; parents who did sign up may have a heightened interest in or concern about their child's health.
JWB, LEF, MG and LCB were involved in planning, logistics and site selection for recruitment of Florida subjects.
The method is divided in four phases: 1) establishing the questions; 2) planning the focus groups (number and size of groups, time and place of meetings, selection and recruitment of participants, choice of moderator); 3) leading of the focus group; 4) analysis and report.
AAJ also participated in selection, training, assignment of recruitment specialists, and meeting with them.
