Association between efficacy and body weight or body mass index for two low-dose oral contraceptives.

Background: This analysis investigated the association of oral contraceptive efficacy with body weight and body mass index (BMI) for hypothesis-generating purposes.

Study Design: Data were from a randomized, parallel-group trial of 180/215/250 mcg of norgestimate (NGM)/25 mcg of ethinyl estradiol (EE) (given to 1671 women) and 1 mg of norethindrone acetate (NETA)/20 mcg of EE (given to 1139 women). Pregnancies were evaluated across BMI deciles and by BMI and body weight dichotomies.

Treatment satisfaction with a transdermal contraceptive patch or oral contraceptives.

Objective: The study was conducted to examine the influence of demographics, health-related quality of life (HRQL) and duration of use on satisfaction with the transdermal contraceptive patch or oral contraceptives (OCs).

Methods: In this cross-sectional analysis of the 2004 National Health and Wellness Survey (NHWS), women were currently using the patch (n=257) or OCs (n=1824). Outcome variable was a five-point satisfaction scale (1=not at all; 5=extremely).