Skip to main content
. Author manuscript; available in PMC: 2013 Mar 24.
Published in final edited form as: Obstet Gynecol. 2011 Mar;117(3):551–557. doi: 10.1097/AOG.0b013e31820afc46

Table 3.

OCP discontinuation risk for Prescription-Only versus OTC users: Discontinuation due to pregnancy, side effects, or other reasons

Hazard Ratio (95% CI)
Source/Number of pill packs
Cross-Border Pharmacy [lsqb]Reference[rsqb]
El Paso Clinic, 1-5 pill packs 1.80 (1.22, 2.65)
El Paso Clinic, ≥ 6 pill packs 1.11 (0.66, 1.87)
Planned OCP Use
3 months or less 3.40 (1.71, 6.74)
4-12 months 2.04 (1.09, 3.80)
Between 1 and 2 years 1.55 (0.99, 2.43)
Two years or more [lsqb]Reference[rsqb]
Don’t know/Not sure 1.25 (0.77, 2.03)
Side effects of OCP use
Did not report side effects [lsqb]Reference[rsqb]
Reported side effects 1.37 (0.96, 1.96)

Model also controls for duration of OCP use at baseline, parity/marital status, nativity/education, border crossing frequency, US government assistance, US health insurance, age groups.