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. 2021 Nov 12;23(11):e21142. doi: 10.2196/21142

Table 3.

Completion of eligibility and health questionnaires and time taken by recruitment method for baseline INTERACTa in Montreal, Saskatoon, and Vancouver.


Recruitment method

Mailed letters Social media News media Partner communications Snowball recruitment Other Total
Number of participants who completed eligibility questionnaire (recruited), n (%) 319 (13.76) 944 (40.73) 284 (12.25) 264 (11.39) 167 (7.20) 340 (14.67) 2318 (100)
Number of participants who completed health questionnaire (completer), n (%) 282 (15.74) 687 (38.36) 230 (12.84) 218 (12.17) 121 (6.75) 253 (14.13) 1791 (100)
Average days from eligibility to completion of health questionnaire, mean (SD) 9.1 (29.9) 14.3 (37.7) 11.8 (34.6) 13.8 (31.4) 9.6 (28.6) 10.6 (25.8) 12.3 (10.4)
Completion rate, % 88.4 72.8 81.0 82.6 72.5 74.4 77.3

aINTERACT: Interventions, Research, and Action in Cities Team.