Table 2. Potential predictors of Mycoplasma genitalium infection among heterosexual men and women seen at Melbourne Sexual Health Centre who reported sexual contact with an M. genitalium–infected partner, Melbourne, Victoria, Australia, August 2008–July 2016*.
| Characteristic | No. | Infected, no. (%) | Not infected, no. (%) | Unadjusted OR (95% CI) | p value | aOR† (95% CI) | p value |
|---|---|---|---|---|---|---|---|
| Total |
265 |
|
|
|
|
|
|
| Age of sex partner, y‡ | |||||||
| >27 | 141 | 53 (37.6) | 88 (62.4) | 1.0 | |||
| <27 |
124 |
53 (42.7) |
71 (57.3) |
0.81 (0.49–1.32) |
0.393 |
– |
– |
| Sex | |||||||
| M | 126 | 39 (31.0) | 87 (69.0) | 1.0 | 1.0 | ||
| F |
139 |
67 (48.2) |
72 (51.8) |
2.08 (1.25–3.43)
|
0.004
|
2.18 (1.28–3.71)
|
0.004
|
| No. of sex partners in preceding 3 mo | |||||||
| 1 | 126 | 59 (46.8) | 67 (53.2) | 1.0 | |||
|
>2 |
136 |
45 (33.1) |
91 (66.9) |
0.56 (0.34–0.93)
|
0.024
|
– |
– |
| Nature of relationship with the notifying partner | |||||||
| Casual | 64 | 17 (26.6) | 47 (73.4) | 1.0 | 1.0 | ||
| Regular |
194 |
86 (44.3) |
108 (55.7) |
2.20 (1.18–4.10)
|
0.013
|
2.13 (1.09–4.14)
|
0.026
|
| Condom use with notifying partner in preceding 3 mo | |||||||
| 100% | 21 | 5 (23.8) | 16 (76.2) | 1.0 | 1.0 | ||
| <100% |
231 |
97 (42.0) |
134 (58.0) |
2.32 (0.13–1.27) |
0.113 |
2.72 (0.93–7.91) |
0.066 |
| Symptoms in men§ | |||||||
| No | 99 | 25 (25.3) | 74 (74.7) | 1.0 | |||
| Yes |
21 |
11 (52.4) |
10 (47.6) |
3.26 (1.24–8.58)
|
0.017
|
– |
– |
| Symptoms in women¶ | |||||||
| No | 93 | 45 (48.4) | 48 (51.6) | 1.0 | – | – | |
| Yes | 24 | 14 (58.3) | 10 (41.7) | 1.49 (0.60–3.70) | 0.387 | ||
*Bold text indicates a statistically significant association (p<0.05). Up to 7% of participants have missing data for some variables. aOR, adjusted odds ratio; MSM, men who have sex with men; OR, odds ratio. †Adjusted for sex, nature of relationship with notifying partner, and reported condom use (100% vs. <100%). ‡The median age across all female, heterosexual male, and MSM contacts was 27 years. §Discharge, dysuria, or urethral irritation; 6 men with urethral chlamydia excluded. In the combined heterosexual population symptoms were not significantly associated with infection and were not included in the multivariate model. ¶Vaginal discharge, dysuria, abnormal bleeding, or lower abdominal pain; 22 women with candidiasis, bacterial vaginosis, chlamydia, or urinary tract infections excluded.