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. Author manuscript; available in PMC: 2017 May 19.
Published in final edited form as: Sex Transm Infect. 2011 Jan 6;87(3):248–253. doi: 10.1136/sti.2010.045484

Table 2.

Predictors of repeat C trachomatis infection

Characteristic Repeat
(n=24)
No repeat
(n=159)
Unadjusted OR (95% CI)* Adjusted OR
(95% CI)*
Baseline demographic and sexual risk history variables
Age
 15–19 17 (19.8%)   69 (80.2%) 3.16 (1.24 to 8.06) 3.19 (1.23 to 8.26)
 ≥20   7 (7.2%)   90 (92.8%) 1.0 1.0
Race
 White   3 (11.1%)   24 (88.9%) 1.0 NI
 African-American 14 (13.7%)   88 (86.3%) 1.27 (0.34 to 4.79)
 Latina   5 (11.6%)   38 (88.4%) 1.05 (0.23 to 4.81)
 Other   2 (18.2%)     9 (81.2%) 1.78 (0.25 to 12.45)
Age at first intercourse
 <15 17 (16.5%)   86 (83.5%) 2.06 (0.81 to 5.24) NI
 ≥15   7 (8.8%)   73 (91.2%) 1.0
Lifetime number of sex partners
 1–3   6 (11.1%)   48 (88.9%) 1.0 NI
 4–7   8 (11.8%)   60 (88.2%) 1.07 (0.35 to 3.28)
 ≥8 10 (16.4%)   51 (83.6%) 1.57 (0.53 to 4.65)
Sex partners in past 3 months
 ≤1 15 (12.4%) 106 (87.6%) 1.0 NI
 ≥2   9 (14.5%)   53 (85.5%) 1.20 (0.49 to 2.92)
Previous STI diagnosis
 Yes 15 (14.3%)   90 (85.7%) 1.28 (0.53 to 3.10) NI
 No   9 (11.5%)   69 (88.5%) 1.0
Reason for clinic visit at time of current diagnosis
 STI-related symptoms or concern 12 (16.2%)   62 (83.8%) 1.56 (0.66 to 3.70) NI
 Other 12 (11.0%)   97 (89.0%) 1.0
Post-diagnosis behaviours and repeat diagnoses
Sexual activity during follow-up period
 Yes 22 (14.3%) 132 (85.7%) 2.25 (0.50 to 10.14) NI
 No   2 (6.9%) 27 (93.1%) 1.0
Any sex without a condom during follow-up period
 Yes 12 (16.7%)   60 (83.3%) 1.65 (0.70 to 3.91) NI
 No 12 (10.8%)   99 (89.2%) 1.0
New sex partner during follow-up period
 Yes 12 (17.6%)   56 (82.4%) 1.84 (0.78 to 4.36) NI
 No 12 (10.4%) 103 (89.6%) 1.0
Continued sex with a baseline partner not known to be treated
 Yes 10 (26.3%)   28 (73.7%) 3.34 (1.35 to 8.29) 3.37 (1.33 to 8.57)
 No 14 (9.7%) 131 (90.3%) 1.0 1.0
Sex with a partner not known to be monogamous
 Yes   7 (11.1%)   56 (88.9%) 1.0 NI
 No 17 (14.2%) 103 (85.8%) 1.32 (0.52 to 3.38)
*

From logistic regression models.

Estimates adjusted for other covariates in the model.

NI, not included in final multivariate model because of p>0.05; STI, sexually transmitted infection.