Table 3.

Adjusted measures of the effect of hormonal contraceptive (HC) method use vs. non-hormonal method use on large cervical ectopy at follow-up.

	HC use ≥50% since last visit *,‡		Continual HC use†
	OR‡	95% CI‡	OR	95% CI
COC *, †,‡	1.8	1.0, 3.3	1.7	1.1, 2.7
DMPA *,‡	0.5	0.2, 1.3	N/A
Age ≥ 25 years	0.4	0.2, 0.8	0.5	0.3, 0.9
Inner city center	2.1	1.2, 3.7	2.4	1.4, 4.3
>1 live births	1.2	0.6, 2.3	1.2	0.6, 2.2
Large baseline area of ectopy	55.1	30.9, 98.2	47.2	26.5, 84.0
White race	1.8	1.0, 3.2	2.5	1.4, 4.7
Age of menarche >14 years	0.8	0.4, 1.5	1.0	0.5, 1.7
Always condom use	0.7	0.4, 1.3	0.8	0.5, 1.4
≥6 lifetime sex partners	0.4	0.3, 0.7	0.4	0.2, 0.6
5–15 days since LMP ‡	0.9	0.6, 1.5	1.0	0.6, 1.8
16–28 days since LMP	0.8	0.5, 1.3	1.0	0.6, 1.7
Income < $417/month	1.4	0.8, 2.4	1.4	0.8, 2.3
Age at coital debut <15 years	1.1	0.6, 1.9	1.2	0.7, 2.1
Previous COC use >12 months	1.2	0.6, 2.1	1.3	0.7, 2.2
Monthly coital frequency 1–4 acts	1.0	0.6, 1.7	0.9	0.6, 1.5

^*Categorical hormonal contraception (HC) exposure variables: COC use for ≥50% of person-time since last visit and DMPA use ≥50% of person-time since last visit (referent group is no hormonal use since last visit).

^†Continuous HC exposure variable: continuous COC use since the study start (referent group is no hormonal use since study start).

^‡HC: hormonal contraception; OR: odds ratio; CI: confidence interval; COC: combined oral contraceptive; DMPA: depot-medroxyprogesterone acetate; LMP: last menstrual period.