Table 3

Odds Ratios and Confidence Intervals for hormonal contraceptive effect (HC), medroxy progesterone acetate (DMPA) effect, >4 year HC use on (a). presence and (b). severity of disease.

Presence of disease

Severity of disease

Model

OR (CI)

OR

CI

Hormonal contraceptive use:

Never used

1.0 (reference)

1.0 (reference)

HC^a

1.92 (1.11, 3.34)

2.22 (1.05, 4.66)

HC + parity + alcohol intake ^ab

1.59 (0.87, 2.82)

DMPA use:

Never used

1.0 (reference)

1.0 (reference)

DMPA^a

2.43 (1.39, 4.57)

2.51 (1.11, 5.64)

DMPA + parity + alcohol intake^ab

2.48 (1.30, 4.74)

Length of exposure:^a

Never used

1.0 (reference)

1.0 (reference)

1–4 years

1.47 (0.80, 2.71)

1.68 (0.73, 3.89)

>4 years HC use

3.56 (1.81, 7.00)

4.43 (1.84, 10.67)

^a Models were adjusted for age and number of sexual partners.

^ab Variables entered; age and number of sex partners, variables offered: parity and alcohol consumption.

McFarlane-Anderson et al. BMC Women's Health 2008 8:9   doi:10.1186/1472-6874-8-9