Table 1 Baseline subject characteristics by birth control method used (n = 630)
Characteristic | OCP Users (n = 449) | DMPA Users (n = 181) | P value |
|---|---|---|---|
Age in years, mean [range] | 23 [21, 26] | 24 [22, 27] | 0.04 |
Race | <0.01 | ||
White/European American | 347 (77.3) | 103 (56.9) | |
Black/African American | 19 (4.2) | 38 (21.0) | |
Latina | 23 (5.1) | 24 (13.3) | |
Other | 60 (13.4) | 16 (8.8) | |
Marital Status | <0.01 | ||
Single | 201 (44.8) | 59 (32.6) | |
Married | 15 (3.3) | 15 (8.3) | |
Divorced | 2 (0.5) | 3 (1.7) | |
In a relationship | 231 (51.5) | 104 (57.5) | |
Education | <0.01 | ||
High school or less | 24 (5.4) | 29 (16.0) | |
Some college | 133 (29.6) | 72 (39.8) | |
College graduate | 206 (46.0) | 54 (29.8) | |
Graduate or professional school | 86 (19.2) | 26 (14.4) | |
Income (personal, annual) | <0.01 | ||
$9,999 or less | 187 (41.8) | 50 (27.8) | |
$10,000–34,999 | 162 (36.2) | 80 (44.4) | |
$35,000 or more | 98 (21.9) | 50 (27.8) | |
Number of Prior Pregnancies Mean [range] | 0 [0, 0] | 1 [0, 2] | <0.01 |
Any prior Pregnancy | 89 (19.9) | 92 (50.8) | <0.01 |