Personally addressed hand-signed letters increase questionnaire response: a meta-analysis of randomised controlled trials
نویسندگان
چکیده
منابع مشابه
Personally addressed hand-signed letters increase questionnaire response: a meta-analysis of randomised controlled trials
BACKGROUND Postal questionnaires are commonly used to collect data for health studies, but non-response reduces study sample sizes and can introduce bias. Finding ways to increase the proportion of questionnaires returned would improve research quality. We sought to quantify the effect on response when researchers address participants personally by name on letters that accompany questionnaires....
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ژورنال
عنوان ژورنال: BMC Health Services Research
سال: 2006
ISSN: 1472-6963
DOI: 10.1186/1472-6963-6-111