The consultant would also study retention methods used by other police departments.
The authors examined long-term effectiveness and study retention during open-label quetiapine treatment for rapid cycling bipolar disorder.
A convenience sample of 100 active older drivers aged 70 years or more was recruited through the aid of a seniors' organization, 94 of whom completed the full study (retention rate 94%).
Targeting women at highest risk of HIV took a heavy toll on study retention however: we compromised our follow up rates by recruiting young women at highest risk of HIV infection, residential mobility, and poor compliance with the protocol procedures.
Study retention was defined as fulfilling all eligible visits.
Once participants were recruited to the study retention was satisfactory.
The recruitment target was met, with study retention at 95%.
In the present study retention was not assessed.
Patients were well matched at baseline (Table 1) and study retention was excellent.
In addition, women were telephoned at 6 months postpartum to maintain contact and encourage study retention.
Unfortunately, slow enrollment and poor study retention were downsides of our recruitment efforts in Nigeria.
