Table 3.

Multivariate models with independent predictors of concurrent HPV coinfection

Concurrent coinfection vs. HPV-negative (n = 1,954 visits)Concurrent coinfection vs. monoinfection (n = 746 visits)
VariableORa (95% CI)ORa (95% CI)
Baseline exposures
 Age at enrollment
  ≤261.001.00
  ≥270.38 (0.17–0.87)0.54 (0.24–1.25)
 Age at first intercourse
  <161.001.00
  16–181.21 (0.76–1.94)1.60 (0.97–2.63)
  ≥191.10 (0.58–2.06)1.18 (0.61–2.27)
 Number of lifetime sex partners
  0–11.001.00
  2–43.13 (1.60–6.14)1.12 (0.55–2.27)
  ≥54.90 (2.38–10.10)1.07 (0.51–2.25)
Time-dependent exposures
 Number of new sex partnersb
  01.001.00
  11.64 (1.22–2.20)1.59 (1.09–1.34)
  ≥22.07 (1.53–2.81)1.52 (1.03–2.24)
 Frequency of sex per weekc
  <1 time1.001.00
  1–3 times1.00 (0.75–1.34)0.93 (0.62–1.38)
  4–6 times1.34 (0.95–1.88)0.85 (0.50–1.44)
  7+ times0.96 (0.54–1.67)0.43 (0.15–1.21)
 Oral contraceptive usec
  Regularly1.001.00
  Sometimes1.26 (0.83–1.90)1.88 (1.08–3.26)
  Never0.98 (0.73–1.32)1.23 (0.83–1.82)
 Condom usec
  Regularly1.001.00
  Sometimes1.19 (0.91–1.56)1.24 (0.83–1.83)
  Never1.33 (1.01–1.74)1.56 (1.00–2.44)

NOTE: Bold indicates statistical significance based on the 95% confidence interval.

  • aMutually adjusted for all other variables in a column.

  • bSince the last 2 visits (∼12 months).

  • cSince the last visit (∼6 months).