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Table 2 Participant demographics by advert source and overall

From: Pilot phase of an internet-based RCT of HIVST targeting MSM and transgender people in England and Wales: advertising strategies and acceptability of the intervention

Recruitment sources Facebook Growlr Hornet Grindr Free/organic Total p-values
Number of campaigns   1 2 5    
N 173 96 431 308 27 1035  
Median (IQR) age (years) 29.2 (24.6, 32.8) 44.8 (34.0, 51.2) 30.8 (24.7, 39.6) 35.0 (27.6, 45.4) 33.6 (29.2, 40.0) 32.1 (25.9, 41.6) p < 0.001
 16–25 years 57 (33%) 7 (7%) 130 (30%) 60 (19%) 5 (19%) 259 (25%)
 26–35 years 112 (65%) 23 (24%) 149 (35%) 102 (33%) 10 (37%) 396 (38%)
 36–45 years 2 (1%) 22 (23%) 93 (22%) 72 (23%) 6 (22%) 195 (19%)
 46 years or older 2 (1%) 44 (46%) 59 (14%) 74 (24%) 6 (22%) 185 (18%)
Gender identity P = 0.001
 Cis man 171 (99%) 96 (100%) 430 (99%) 305 (99%) 23 (85%) 1025 (99%)
 Trans man 1 (1%) 0 1 (1%) 2 (1%) 3 (11%) 8 (1%)
 Trans woman 0 0 0 1 (< 1%) 1 (4%) 2 (< 1%)
Sexual Identity N = 153 N = 72 N = 361 N = 240 N = 25 N = 851 p = 0.23
 Gay 143 (93%) 65 (90%) 322 (89%) 204 (85%) 23 (92%) 757 (89%)
 Bisexual 8 (5%) 5 (7%) 35 (10%) 30 (13%) 1 (4%) 79 (9%)
 Other 2 (1%) 2 (3%) 4 (1%) 6 (3%) 1 (4%) 15 (2%)
Ethnicity p = 0.52
 White 153 (88%) 86 (90%) 394 (91%) 263 (85%) 25 (93%) 921 (89%)
 Asian 5 (3%) 2 (2%) 13 (3%) 10 (3%) 1 (4%) 31 (3%)
 Black 3 (2%) 3 (3%) 8 (2%) 12 (4%) 0 26 (3%)
 Other 12 (7%) 5 (5%) 16 (4%) 23 (7%) 1 (4%) 23 (7%)
HEQ N = 172 N = 95 N = 425 N = 307 N = 27 N = 1026 P = 0.31
 High 114 (66%) 59 (62%) 244 (57%) 174 (57%) 20 (74%) 611 (60%)
 Medium 33 (19%) 16 (17%) 94 (22%) 65 (21%) 3 (11%) 211 (21%)
 Low 25 (15%) 20 (21%) 87 (20%) 68 (22%) 4 (14%) 204 (20%)
HIV testing history N = 173 N = 96 N = 426 N = 304 N = 27 N = 1026 p = 0.09
 Last 12 months 120 (69%) 54 (56%) 280 (66%) 185 (61%) 13 (48%) 652 (64%)
 12 months+ 39 (23%) 27 (28%) 85 (20%) 72 (24%) 10 (37%) 233 (23%)
 Never 14 (8%) 15 (16%) 61 (14%) 47 (15%) 4 (15%) 141 (14%)
CAI last 3 months 124 (71%) 67 (70%) 308 (71%) 206 (67%) 21 (78%) 726 (70%) P = 0.58
  1. IQR interquartile range, CAI condomless anal intercourse, HEQ highest educational qualification