Table 4.
Cost per completer by city and recruitment method.
| Reported recruitment method | Montreal (n=1158) | Saskatoon (n=315) | Vancouver (n=318) | Total (n=1791) | ||||
| Mailed letters, n (%)a | 148 (12.8) | 0 (0) | 134 (42.1) | 282 (15.7) | ||||
|
|
Cost per completer, CAD$ (US$)b | 130.80 (100.61) | N/A | 83.56 (64.27) | 108.30 (83.31) | |||
| Social media, n (%) | 503 (43.4) | 88 (27.9) | 96 (30.2) | 687 (38.4) | ||||
|
|
Cost per completer, CAD$ (US$) | 13.35 (10.27) | 16.13 (12.4) | 22.91 (17.62) | 15.04 (11.56) | |||
| News media, n (%) | 226 (19.5) | 4 (1.3) | 0 (US 0) | 230 (12.8) | ||||
|
|
Cost per completer, CAD$ (US$) | 6.17 (4.75) | 74.04 (56.95) | N/A | 7.35 (5.65) | |||
| Other, n (%) | 109 (9.4) | 79 (25.1) | 65 (20.4) | 253 (14.1) | ||||
|
|
Cost per completer, CAD$ (US$) | 18.05 (13.88) | 21.60 (16.62) | 72.70 (55.92) | 33.20 (25.54) | |||
| Partner communications, n (%) | 91 (7.9) | 126 (40) | 1 (0.3) | 218 (12.2) | ||||
|
|
Cost per completer, CAD$ (US$) | 7.32 (5.63) | 0.88 (0.68) | 347.10 (267) | 5.16 (3.97) | |||
| Snowball recruitment, n (%) | 81(7) | 18 (5.7) | 22 (6.9) | 121 (6.8) | ||||
|
|
Cost per completer, CAD$ (US$) | 16.40 (12.6) | 0 (0) | 59.80 (46) | 21.85 (16.8) | |||
| Average cost per completer, CAD$ (US$) | 26.52 (20.4) | 10.85 (8.35) | 23.80 (18.3) | 23.28 (17.9) | ||||
aNumber of participants who completed the health questionnaire Percentages indicate the proportion of city participants recruited through this specific method.
bCost per completer includes the cost of all materials, expenses, and staff time and is expressed in Canadian dollars. Additional costs of participant compensation in Saskatoon (CAD $10 [US $7.69]) for questionnaire completion) are not included in this table.