Table 2

Response rate to final follow up questionnaire

Intervention

Control


Replied

721

233

Not replied

49

14

Total number of questionnaires analysed

770

247

Overall response rate

93.6%

94.3%


Cockayne and Torgerson BMC Medical Research Methodology 2005 5:34   doi:10.1186/1471-2288-5-34

Open Data