Table 1 Demographic variation in HSV‐2 seroprevalence in Australia.
| HSV‐2 | No | Rate (%) and 95% CI | Univariate RR | Multivariate RR* | |
|---|---|---|---|---|---|
| Weighted† | |||||
| Age (years) | χ2(5) = 33.6 p<0.001 | χ2 (5) = 34.0 p<0.001 | |||
| 25–34 | 496 | 10.7 (8.0 to 13.4) | 10.2 (12.8 to 7.5) | 1.00 | 1.00 |
| 35–44 | 935 | 16.4 (14.0 to 18.7) | 15.5 (13.1 to 7.8) | 1.53 (1.00 to 2.35) | 1.59 (1.20 to 2.12) |
| 45–54 | 1020 | 15.8 (13.6 to 18.0) | 14.4 (12.3 to 6.6) | 1.48 (0.96 to 2.26) | 1.53 (1.16 to 2.03) |
| 55–64 | 678 | 11.9 (9.5 to 14.4) | 10.8 (13.1 to 8.4) | 1.12 (0.69 to 1.80) | 1.18 (0.86 to 1.61) |
| 65–74 | 571 | 9.3 (6.9 to 11.7) | 8.3 (10.5 to 6.0) | 0.87 (0.51 to 1.47) | 0.94 (0.66 to 1.32) |
| ⩾75 | 300 | 7.7 (4.7 to 10.7) | 8.7 (11.8 to 5.5) | 0.72 (0.37 to 1.41) | 0.79 (0.51 to 1.24) |
| Sex | χ2(1) = 47.4 p<0.001 | χ2(1) = 49.5 p<0.001 | |||
| Male | 1739 | 8.9 (7.6 to 10.3) | 8.4 (9.7 to 7.1) | 1.00 | 1.00 |
| Female | 2261 | 16.3 (14.8 to 17.8) | 15.6 (14.1 to 7.1) | 1.83 (1.45 to 2.32) | 1.81 (1.52 to 2.14) |
| Geography | χ2(2) = 24.1 p<0.001 | χ2(2) = 26.4 p<0.001 | |||
| Capital city | 2162 | 14.4 (12.9 to 15.9) | 13.7 (12.2 to 5.1) | 1.00 | 1.00 |
| Other metropolitan | 804 | 15.3 (12.8 to 17.8) | 13.3 (10.9 to 5.6) | 1.06 (0.80 to 1.42) | 1.05 (0.87 to 1.27) |
| Rural and remote | 1034 | 8.7 (7.0 to 10.4) | 8.6 (10.4 to 6.9) | 0.61 (0.44 to 0.84) | 0.61 (0.49 to 0.75) |
| Indigenous status | χ2(1) = 7.8 p = 0.005 | χ2(1) = 4.3 p = 0.038 | |||
| Non‐Indigenous | 3885 | 12.8 (11.8 to 13.9) | 12.0 (11.0 to 3.0) | 1.00 | 1.00 |
| Indigenous | 115 | 21.7 (14.2 to 29.3) | 17.7 (10.7 to 4.6) | 1.69 (0.94 to 3.05) | 1.51 (1.05 to 2.18) |
| Australia | 4000 | 13.1 (12.1 to 14.2) | 12.1 (11.1 to 3.1) | ||
95% confidence interval (CI) of rates calculated by the normal approximation of the binomial; CIs for weighted rates are based on weighted proportions but actual n (given in the table). Relative risk (RR) calculated from a Poisson regression analysis. 95% CIs of RR calculated from the Wald method using SAS.
*Age group, sex, geography, Indigenous status.
†Weighted to the age, sex, geographic, and Indigenous structure of the 2001 Australian census population.
χ2(x), chi square at x degrees of freedom.