Table 2

Factors associated with the occurrence of gonorrhoea/chlamydia testing among 3283 subjects in care

OR (95% CI) for being tested
UnivariateMultivariate
Calendar time
 Linear parameter
  Per year, 1999–20071.17 (1.15 to 1.19)
 Linear spline
  Per year, 1999–20011.13 (1.04 to 1.24)
  Per year, 2001–71.28 (1.25 to 1.31)
Gender
 Male1.00 (Ref)1.00 (Ref)
 Female4.12 (3.68 to 4.61)3.61 (3.23 to 4.04)
Age, years
 18–293.12 (2.52 to 3.87)4.71 (3.75 to 5.92)
 30–391.61 (1.37 to 1.90)2.39 (2.00 to 2.87)
 40–491.36 (1.16 to 1.59)1.66 (1.40 to 1.96)
 ≥501.00 (Ref)1.00 (Ref)
Race/ethnicity
 African-American1.73 (1.47 to 2.02)1.54 (1.32 to 1.80)
 White/other1.00 (Ref)1.00 (Ref)
HIV risk
 MSM or HET reported1.33 (1.16 to 1.52)1.11 (0.97 to 1.27)
 No MSM or HET reported1.00 (Ref)1.00 (Ref)
Visits within the calendar year*
 <31.00 (Ref)1.00 (Ref)
 3–61.63 (1.45 to 1.85)1.69 (1.49 to 1.93)
 ≥72.04 (1.78 to 2.35)2.38 (2.05 to 2.76)
Mean annual CD4 cell count (cells/mm3)
 ≤2001.00 (Ref)1.00 (Ref)
 201–3501.12 (0.98 to 1.29)1.09 (0.94 to 1.25)
 >3501.32 (1.17 to 1.50)1.25 (1.10 to 1.42)
Mean annual HIV-1 RNA (copies/ml)
 ≤4001.00 (Ref)
 401–99991.06 (0.91 to 1.15)
 ≥10 000 or missing0.94 (0.85 to 1.04)
Syphilis testing within the calendar year
 Tested1.67 (1.52 to 1.83)1.80 (1.62 to 1.99)
 Not tested1.00 (Ref)1.00 (Ref)
  • * Visits included only those to an HIV and/or gynaecological provider.

  • Time modelled linearly in univariate analysis and as a linear spline in multivariate analysis.

  • HET, heterosexual sex; MSM, men who have sex with men.