A small unconditional non-financial incentive suggests an increase in survey response rates amongst older general practitioners (GPs): a randomised controlled trial study

Table 3 Evaluation of nonresponse bias: Comparison of characteristics between early responders (initial mail-out) and late responders (2nd and 3rd reminder)

	‘Early’ n = 48	‘Late’ n = 29	P
Female	25%	40%	0.24^a
Group practice (>1 GP)	94%	79%	0.10^a
Reported fair or poor health	23%	25%	0.89^a
	Mean (sd)	Mean (sd)
Age (years)	55 (6.5)	56 (8.1)	0.80^b
Years in general practice	25 (9.4)	26 (9.8)	0.64^b
Job satisfaction scale (‘0’ not satisfied to ‘10’ extremely satisfied)	7.4 (2.0)	7.6 (2.3)	0.77^b
Burnout scale (‘0’ not burnt out to ‘10’ extremely burnt out)	3.3 (2.5)	2.8 3.0)	0.46^b

ISSN: 2731-4553