A clinical trial alert tool to recruit large patient samples and assess selection bias in general practice research

Many research projects in general practice face problems when recruiting patients, often resulting in low recruitment rates and an unknown selection bias, thus limiting their value for health services research. The objective of the study is to evaluate the recruitment performance of the practice staff in 25 participating general practices when using a clinical trial alert (CTA) tool.The CTA tool was developed for an osteoporosis survey of...