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Table 1 Data collection for included DCEs

From: Systematic review and validity assessment of methods used in discrete choice experiments of primary healthcare professionals

Item Category Number of studies %
Sample Primary healthcare professionals only 21 61.8%
with other health professionals 8 23.5%
with patients 3 8.8%
With other health professionals and patients 1 2.9%
with patients and policymakers 1 2.9%
Administration of survey Interview 2 5.9%
Postal survey 9 26.5%
Online survey 20 58.8%
Both online and postal 3 8.8%
Sample size primary healthcare professionals < 50 4 11.8%
50–200 7 20.6%
200–500 13 38.2%
> 500 10 29.4%
Response rate < 30% 9 26.5%
30–60% 9 26.5%
> 60% 4 11.8%
Not reported 12 35.3%
Piloting Yes 25 73.5%
Response incentive Yes 4 11.8%