Table 2

Univariate analysis of demographic risk factors and sexual contact with gonorrhoea for incident pharyngeal N gonorrhoeae infection in the HIV-negative HIM cohort

 PY N* Incidence (per 100 PY) HR 95% CI p Value† Age p1<0.001 <25 216.3 12 5.55 1 – 25–34 1268.9 72 5.67 1.00 0.50 to 2.00 35–44 1674.1 84 5.02 0.87 0.43 to 1.77 45–54 865.8 20 2.31 0.40 0.18 to 0.89 >54 316.8 5 1.58 0.27 0.08 to 0.94 Ethnicity p2=0.487 Anglo 3259.2 136 4.17 1 – Other European 547.2 30 5.48 1.32 0.84 to 2.07 Middle Eastern 93.9 8 8.52 2.06 0.80 to 5.31 Asian 204.8 9 4.40 1.06 0.53 to 2.09 Other 213.8 9 4.21 1.02 0.47 to 2.18 Education‡ p1=0.992 Year 10 941.0 36 3.82 1 – Year 12 936.2 48 5.13 1.33 0.81 to 2.18 Tertiary diploma 1401.4 71 5.07 1.31 0.82 to 2.09 University/postgraduate degree 993.7 38 3.82 1.00 0.59 to 1.69 Income (weekly, $A)§ p1=0.225 <200 175.3 5 2.85 1 – 200–499 421.4 16 3.80 1.28 0.47 to 3.49 500–999 1337.7 57 4.26 1.43 0.58 to 3.52 1000–1499 1122.5 58 5.17 1.70 0.69 to 4.18 >1500 1143.2 54 4.72 1.56 0.62 to 3.92 Sexual identity p2=0.387 Bisexual/straight/other 172.9 6 3.47 1 – Gay/homosexual/queer 4165.0 186 4.47 1.28 0.57 to 2.89 Sexual contact with gonorrhoea p2<0.001 No 4263.3 180 4.22 1 – Yes 72.5 13 17.93 5.17 3.05 to 8.77 • * n does not always equal 193 because of missing data. • 1, p for trend; 2, p for homogeneity. • Year 10=completed 10 years of school education; year 12=completed maximum 12 years of school education. • §$A1 currently approximately equivalent to £0.50.

• PY, person-years.