Table 1.
Birth Control Connect online participant characteristics at baseline, by study arm.
| Characteristic* | Intervention [Online discussion groups with IUD users] (n = 174), % |
Control [Online discussion groups with no IUD users] (n = 314), % |
|---|---|---|
| Age group | ||
| 18–24 | 51.7 | 50.6 |
| 25–34 | 45.4 | 43.6 |
| 35–45 | 2.9 | 5.4 |
| Missing | 0 | 0.3 |
| Race/ethnicity | ||
| Asian | 6.9 | 7.6 |
| Black/African American | 12.6 | 12.1 |
| Hispanic/Latina | 6.3 | 11.5 |
| White | 66.7 | 58.9 |
| Other | 5.2 | 5.7 |
| Missing | 2.3 | 4.1 |
| Number of children | ||
| 0 children | 88.5 | 89.8 |
| ≥1 child | 11.5 | 9.9 |
| Missing | 0 | 0.3 |
| Number of pregnancies** | ||
| 0 pregnancies | 47.1 | 50.6 |
| ≥1 pregnancy | 12.1 | 9.2 |
| Missing | 40.8 | 40.1 |
| Birth control method used at baseline (may report more than one) | ||
| Pill | 54.6 | 54.6 |
| Patch | 1.2 | 3.5 |
| Ring | 5.8 | 4.2 |
| Shot | 6.9 | 3.8 |
| Arm implant | 9.8 | 9.2 |
| Condoms | 36.8 | 35.0 |
| Withdrawal | 21.3 | 22.3 |
| Female sterilization | 2.3 | 1.3 |
| Male sterilization | 1.2 | 2.2 |
| Other | 1.2 | 1.9 |
| None | 4.0 | 5.1 |
| Birth control methods ever used | ||
| Pill | 82.2 | 79.0 |
| Patch | 11.5 | 10.2 |
| Ring | 12.1 | 12.4 |
| Shot | 10.9 | 15.3 |
| Arm implant | 4.0 | 4.5 |
| Condoms | 78.2 | 80.3 |
| Withdrawal | 52.9 | 55.1 |
| Female sterilization | 0 | 0.3 |
| Male sterilization | 0 | 0.3 |
| Other | 0 | 0.3 |
| Parental education | ||
| High school graduate or less | 17.8 | 16.2 |
| Some college or 4-year college graduate | 32.2 | 38.9 |
| More than 4-year college graduate | 23.6 | 16.9 |
| Missing | 26.4 | 28.0 |
| Geographic region | ||
| Northeast (Connecticut, Maine, Massachusetts, | 32.2 | 21 |
| New Hampshire, Rhode Island, Vermont, New Jersey, New York, and Pennsylvania) | ||
| Midwest (Illinois, Indiana, Michigan, Ohio, | 18.4 | 17.5 |
| Wisconsin, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota) | ||
| South: (Delaware, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, District of Columbia, West Virginia, Alabama, Kentucky, Mississippi, Tennessee, Arkansas, Louisiana, Oklahoma, Texas) | 24.1 | 37.6 |
| West (Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, Wyoming, (Alaska, California, Hawaii, Oregon, and Washington) | 25.3 | 25.3 |
| Unknown state | 0 | 1 |
*
No differences in characteristics were significantly different by study arm.
**
Missingness is relatively high for number of pregnancies and parental education because study follow-up survey assessed these variables, and were thus not available for participants lost to follow-up. The pregnancy question was optional.