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Table 1 Recruitment profile of participants by phases

From: Can obtaining informed consent alter self-reported drinking behaviour? A methodological experiment

Phases

Contacted

Screening1a

Screening2b

Screening3c

Successfully recruited

IG

CG

Run-in

214

184 (86)

106 (50)

109 (51)

50 (23)

50 (23)

Main

488

378 (78)

306 (63)

300 (62)

140 (29)

140 (29)

TOTAL

702

562 (80)

412 (59)

409 (58)

190 (27)

190 (27)

  1. a“are you a student?”; b“do you drink alcohol?”; c“would you like to take part in a brief health survey, which will take around 5 minutes?”. All those who passed these three screening stages provided dates of birth and were successfully recruited.