BACKGROUND Diabetes is an increasing public health problem in the UK and globally. Diabetic retinopathy is a microvascular complication of diabetes, and is one of the leading causes of blindness in the UK working age population. The diabetic eye screening programme in England aims to invite all people with diabetes aged 12 or over for retinal photography to screen for the presence of diabetic r...

BACKGROUND Meeting recruitment goals is challenging for many clinical trials conducted in primary care populations. Little is known about how the use of different recruitment strategies affects the types of individuals choosing to participate or the conclusions of the study. METHODS A secondary analysis was performed using data from participants recruited to a clinical trial evaluating acupun...

General population surveys as well as business surveys are affected by low response rates. There is a need to investigate possible ways to increase participation in surveys and to motivate interviewee in answering questionnaires. Even in official statistics the problem is relevant since lack of motivation undermines not only participation to the survey, but it is related to the timeliness in pa...

Smartphone apps are increasingly being used for population-based survey research. Recruiting people to sign up an app-based is, however, less straightforward compared traditional surveys, which risks inflating nonresponse as well the potential bias. By means of experiment with over 44,000 recently registered job seekers, we present causal evidence on effects using different contact modes (email...

background: letters to the editor provide an opportunity for readers to state their views about published articles. research on this issue has been mainly on western journals and there is no study on the iranian journals. the present study aimed to investigate this subject in iranian biomedical journals. materials and method: this was a bibliometric study. the databases of iran medex, medlib, a...