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

Table 2.

Demographic characteristics by recruitment methoda.

Demographics Mailed letters (n=282) Social media (n=687) News media (n=230) Partner communications (n=218) Snowball recruitment (n=121) Other (n=253) Total (n=1791)
Age category (years), n (%)

18-34 10 (3.5) 238 (34.6) 44 (19.1) 108 (49.5) 58 (47.9) 56 (22.1) 514 (28.7)

35-54 91 (32.3) 273 (39.7) 74 (32.2) 47 (21.6) 34 (28.1) 75 (29.6) 594 (33.2)

55-64 89 (31.6) 95 (13.8) 62 (27) 17 (7.8) 11 (9.1) 29 (11.5) 303 (16.9)

65-88 92 (32.6) 48 (7) 46 (20) 13 (6) 12 (9.9) 39 (15.4) 250 (13.9)
Education, n (%)

Less than university degree 94 (33.3) 142 (20.7) 26 (11.3) 63 (28.9) 21 (17.4) 74 (29.2) 420 (23. 5)

University degree 85 (30.1) 259 (37.7) 90 (39.1) 79 (36.2) 51 (42.1) 82 (32.4) 646 (36.1)

Graduate degree 100 (35.5) 282 (41) 113 (49.1) 70 (32.1) 49 (40.5) 94 (37.2) 708 (39.5)
Gender, n (%)

Male 120 (42.6) 144 (21) 84 (36.5) 67 (30.7) 45 (37.2) 81 (32) 541 (30.2)

Female 161 (57.1) 537 (78.2) 144 (62.6) 149 (68.3) 75 (62) 170 (67.2) 1236 (69)

Other 0 (0) 3 (0.4) 2 (0.9) 2 (0.9) 0 (0) 2 (0.8) 9 (0.5)
Income category, n (%)

CAD $0- $49,999 (US $0- $38,460) 50 (17.7) 200 (29.1) 36 (15.7) 87 (39.9) 31 (25.6) 82 (32.4) 486 (27.1)

CAD $50,000- $99,999 (US $38,461-$76,922) 79 (28.0) 212 (30.9) 91 (39.6) 38 (17.4) 41 (33.9) 56 (22.1) 517 (28.9)

CAD $100,000-$149,999 (US $76,923-$115,383) 49 (17.4) 122 (17.8) 49 (21.3) 33 (15.1) 20 (16.5) 45 (17.8) 318 (17.8)

CAD $150,000-$199,999 (US $115,384-$153,845) 29 (10.3) 53 (7.7) 19 (8.3) 14 (6.4) 9 (7.4) 22 (8.7) 146 (8.2)

≥CAD $200,000 (US $153,846) 33 (11.7) 40 (5.8) 15 (6.5) 15 (6.9) 10 (8.3) 13 (5.1) 126 (7)
Ethnicity, n (%)

White 246 (87.2) 591 (86.0) 217 (94.3) 155 (71.1) 93 (76.9) 195 (77.1) 1497 (83.6)

Indigenous or Aboriginal <5 (0.7) 10 (1.5) 0 5 (2.3) <5 (0.8) 11 (4.3) 29 (1.6)

Visible minorities 31 (11) 81 (11.8) 11 (4.8) 55 (25.2) 23 (19) 42 (16.6) 243 (13.6)

aMissing responses: age: 7.25% (130/1791); education: 0.95% (17/1791); gender: 0.28% (5/1791); income: 11.05% (198/1791); and ethnicity: 1.23% (22/1791).