Do incentives, reminders or reduced burden improve healthcare professional response rates in postal questionnaires? two randomised controlled trials

Table 2 Response to first reminder in RCT B

	Full questionnaire		Postcard
	N = 425		N = 422
	n	%	n	%
Completed questionnaires returned	44	10.4	31	7.3
Absolute percent difference (95% CI) ; p-value	3 (−0.1 , 6.8); 0.12

ISSN: 1472-6963