Table 6.
Age of Initiation of Anal Sex with a Man by Race/Ethnicity of MSM Participants in the American Men’s Internet Survey, United States, 2015
| Race/Ethnicity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| All | Black, non-Hispanic | Hispanic | White, non-Hispanic | Other or multiple races | ||||||
| (N=8,331) | (N=544) | (N=1,214) | (N=5,813) | (N=760) | ||||||
| Had oral sex by age xa | No. | (%) | No. | (%) | No. | (%) | No. | (%) | No. | (%) |
| 10 | 31 | (0.4) | 5 | (0.9) | 7 | (0.6) | 18 | (0.3) | 1 | (0.1) |
| 11 | 78 | (0.9) | 13 | (2.4) | 13 | (1.1) | 46 | (0.8) | 6 | (0.8) |
| 12 | 243 | (2.9) | 28 | (5.1) | 44 | (3.6) | 147 | (2.5) | 24 | (3.2) |
| 13 | 470 | (5.6) | 43 | (7.9) | 85 | (7.0) | 299 | (5.1) | 43 | (5.7) |
| 14 | 800 | (9.6) | 62 | (11.4) | 144 | (11.9) | 507 | (8.7) | 87 | (11.4) |
| 15 | 1286 | (15.4) | 102 | (18.8) | 238 | (19.6) | 807 | (13.9) | 139 | (18.3) |
| 16 | 1981 | (23.8) | 157 | (28.9) | 362 | (29.8) | 1255 | (21.6) | 207 | (27.2) |
| 17 | 2677 | (32.1) | 202 | (37.1) | 494 | (40.7) | 1722 | (29.6) | 259 | (34.1) |
| 18 | 3843 | (46.1) | 303 | (55.7) | 713 | (58.7) | 2458 | (42.3) | 369 | (48.6) |
| 19 | 4655 | (55.9) | 343 | (63.1) | 814 | (67.1) | 3064 | (52.7) | 434 | (57.1) |
| 20 | 5235 | (62.8) | 371 | (68.2) | 897 | (73.9) | 3484 | (59.9) | 483 | (63.6) |
| 21 | 5826 | (69.9) | 410 | (75.4) | 978 | (80.6) | 3907 | (67.2) | 531 | (69.9) |
| 22 | 6210 | (74.5) | 438 | (80.5) | 1016 | (83.7) | 4189 | (72.1) | 567 | (74.6) |
| 23 | 6474 | (77.7) | 453 | (83.3) | 1049 | (86.4) | 4374 | (75.2) | 598 | (78.7) |
| 24 | 6710 | (80.5) | 467 | (85.8) | 1069 | (88.1) | 4547 | (78.2) | 627 | (82.5) |
| 25 | 6927 | (83.1) | 486 | (89.3) | 1089 | (89.7) | 4704 | (80.9) | 648 | (85.3) |
| Log-rank p-valueb | <0.001 | <0.001 | ref | <0.001 | ||||||
| Mean (SD) age of first anal sex | 20.3 [6.7] | 19.0 [4.8] | 18.6 [4.8] | 20.9 [7.3] | 19.6 [5.8] | |||||
| Rank-sum p-valuec | <0.001 | <0.001 | ref | <0.001 | ||||||
a
Number and percentages are cumulative. For example by 18 years of age, 3,843 (46.1%) participants ever had anal sex with a male partner.
b
Log-rank p-value comparing equality of survival until first anal sex of one racial/ethnic group to referent group of white MSM.
c
Rank-sum p-value by Wilcoxon two-sample test comparing mean age of first anal sex of one racial/ethnic group to referent group of white MSM.