TABLE 5.

Baseline Factors That May Influence DMPA-SC Discontinuation (N=731)

FactorSample SizeaP ValueHazard Ratio (95% CI)
Self-administered vs. provider-administered364 vs. 367<.0010.43 (0.33, 0.54)
Age at enrollment731.180.98 (0.96, 1.01)
Health facility catchment sitea731<.001
Site 1 vs. Site 6293 vs. 1462.01 (1.39, 2.89)
Site 2 vs. Site 667 vs. 1461.78 (1.09, 2.91)
Site 3 vs. Site 690 vs. 1461.75 (1.11, 2.74)
Site 4 vs. Site 675 vs. 1462.90 (1.88, 4.47)
Site 5 vs. Site 660 vs. 1461.18 (0.66, 2.09)
Married/regular sexual partner vs. none705 vs. 25.480.81 (0.45, 1.45)
Worked outside home for pay in last 12 months vs. not96 vs. 634.181.25 (0.90, 1.72)
Given birth vs. never given birth725 vs. 5.080.42 (0.15, 1.12)
Completed primary school or higher vs. less or no school185 vs. 545.270.86 (0.65, 1.13)
Christian, none, or other vs. Muslim418 vs. 311.101.24 (0.96, 1.61)
Previous use of contraceptives vs. none or no response679 vs. 52.110.72 (0.48, 1.08)
Previous use of injectables vs. none657 vs. 68.290.82 (0.56, 1.19)
Community health worker vs. clinic-based provider526 vs. 205.450.90 (0.68, 1.19)
  • Abbreviations: CI, confidence interval; DMPA-SC, subcutaneous depot medroxyprogesterone acetate; vs., versus.

  • a Sample size for each factor varied due to missing values.

  • b Except for site, the univariable models for all other factors were stratified by site.