Factors associated with meningococcal conjugate vaccine (MenACWY) uptake on the first visit among 10 370 men who have sex with men attending the Melbourne Sexual Health Centre from 11 December 2017 to 31 December 2018
| Characteristics | Received the vaccine, n (%) | OR (95% CI) | P value | aOR (95% CI)* | P value |
| Age (years) | |||||
| 16–25 | 1503 (59.3) | 1.43 (1.29 to 1.59) | <0.001 | 1.21 (1.08 to 1.35) | 0.001 |
| 26–35 | 2561 (57.2) | 1.31 (1.20 to 1.44) | <0.001 | 1.17 (1.07 to 1.29) | 0.001 |
| ≥36 | 1693 (50.4) | 1 | Ref | 1 | Ref |
| Country of birth | |||||
| Australia | 2734 (54.2) | 1 | Ref | 1 | Ref |
| Overseas | 2808 (57.9) | 1.17 (1.08 to 1.26) | <0.001 | 1.11 (1.03 to 1.21) | 0.011 |
| Unknown/missing | 215 (45.3) | 0.70 (0.58 to 0.85) | <0.001 | 0.70 (0.58 to 0.85) | <0.001 |
| Aboriginal or Torres Strait Islander | |||||
| No | 5122 (56.3) | 1 | Ref | ||
| Yes | 56 (57.1) | 1.03 (0.69 to 1.55) | 0.871 | ||
| Unknown/missing | 579 (49.2) | 0.75 (0.66 to 0.85) | <0.001 | ||
| Sexual practice in the last 12 months | |||||
| Had male partners only | 5307 (57.6) | 2.14 (1.88 to 2.42) | <0.001 | 2.24 (1.96 to 2.55) | <0.001 |
| Had both male and female partners | 450 (38.9) | 1 | Ref | 1 | Ref |
| Number of male sex partners in the last 12 months | |||||
| ≤4 | 2164 (53.5) | 1 | Ref | 1 | Ref |
| >4 | 2988 (57.6) | 1.18 (1.09 to 1.29) | <0.001 | 1.16 (1.06 to 1.27) | 0.001 |
| Unknown/missing | 510 (52.6) | 0.97 (0.84 to 1.11) | 0.621 | 1.25 (1.06 to 1.49) | 0.009 |
| Condom use with male sex partners in the last 12 months † | |||||
| Always | 1371 (58.8) | 1 | Ref | ||
| Not always | 3624 (56.9) | 0.93 (0.84 to 1.02) | 0.113 | ||
| Unknown/missing | 762 (45.6) | 0.59 (0.52 to 0.67) | <0.001 | ||
| Injected drug use in the last 12 months | |||||
| No | 5073 (56.2) | 1 | Ref | ||
| Yes | 120 (48.6) | 0.74 (0.57 to 0.95) | 0.018 | ||
| Unknown | 564 (51.8) | 0.84 (0.74 to 0.95) | 0.006 | ||
| Ever sex worker | |||||
| No | 5620 (55.6) | 1 | Ref | ||
| Yes | 137 (53.5) | 0.92 (0.72 to 1.18) | 0.514 | ||
| HIV/PrEP status | |||||
| HIV-negative, currently not on PrEP | 4734 (58.3) | 1.62 (1.44 to 1.82) | <0.001 | 1.80 (1.56 to 2.09) | <0.001 |
| HIV-negative, currently on PrEP | 436 (44.7) | 0.94 (0.79 to 1.11) | 0.445 | 0.93 (0.77 to 1.12) | 0.437 |
| HIV-positive | 587 (46.3) | 1 | Ref | 1 | Ref |
*In the multivariable logistic regression, variables with a p value >0.20 were removed from the model following the stepwise backwards regression.
†’Not always’ was defined as men who sometimes, usually or never used a condom with their male partners during anal sex in the last 12 months.
aOR, adjusted odds ratio; PrEP, HIV pre-exposure prophylaxis; ref, reference.