Cohort analysis: associations between participant characteristics and sexually transmitted diseases (N=1456)
| Follow up STD | ||||||||
|---|---|---|---|---|---|---|---|---|
| Gonorrhoea (n=119) | Chlamydia (n=111) | Syphilis (n=10) | ||||||
| Total | Without STD* (n=855) | OR | p Value | OR | p Value | OR* | p Value | |
| *People with each STD were compared with the group with no STD. | ||||||||
| †Numbers in partners column do not total 2021 because of missing values. | ||||||||
| Circumcised | ||||||||
| Yes | 1109 | 634 | 1.0 | — | 1.0 | — | 1.0 | — |
| No | 347 | 221 | 1.2 | 0.31 | 0.8 | 0.24 | 1.9 | 0.32 |
| Site | ||||||||
| Baltimore | 229 | 106 | 6.3 | <0.001 | 2.4 | 0.04 | 2.4 | 0.30 |
| Denver | 290 | 185 | 3.1 | <0.001 | 1.6 | 0.23 | 5.2 | 0.15 |
| Long Beach | 252 | 161 | 6.1 | <0.001 | 0.8 | 0.52 | 4.6 | 0.19 |
| Newark | 332 | 152 | 0.9 | 0.80 | 0.4 | 0.008 | 2.2 | 0.41 |
| San Francisco | 353 | 251 | 1.0 | — | 1.0 | — | 1.0 | — |
| Race/ethnicity | ||||||||
| White | 287 | 208 | 1.0 | — | 1.0 | — | 1.0 | — |
| African-American | 869 | 430 | 17.1 | <0.001 | 2.8 | <0.001 | — | — |
| Hispanic | 227 | 166 | 2.9 | 0.12 | 1.2 | 0.70 | — | — |
| Other | 73 | 51 | 4.1 | 0.09 | 0.6 | 0.48 | — | — |
| Age | ||||||||
| <20 | 177 | 85 | 3.0 | <0.001 | 6.8 | <0.001 | — | — |
| 20–24 | 397 | 210 | 1.8 | 0.05 | 4.6 | <0.001 | 0.4 | 0.20 |
| 25–29 | 294 | 192 | 1.1 | 0.86 | 2.1 | 0.07 | — | — |
| 30–34 | 252 | 147 | 1.2 | 0.66 | 2.0 | 0.12 | 0.5 | 0.40 |
| ≥35 | 336 | 221 | 1.0 | — | 1.0 | — | 1.0 | — |
| No of sex partners past 3 months† | ||||||||
| 1 | 907 | 566 | 1.0 | — | 1.0 | — | 1.0 | — |
| 2 | 250 | 136 | 1.3 | 0.26 | 1.0 | 0.94 | 0.7 | 0.75 |
| ≥3 | 238 | 119 | 1.9 | 0.01 | 1.7 | 0.30 | 2.4 | 0.21 |
| New partner at follow up† | ||||||||
| Yes | 785 | 439 | 1.8 | 0.003 | 1.2 | 0.42 | 2.2 | 0.26 |
| No | 644 | 408 | 1.0 | — | 1.0 | — | 1.0 | — |