Table 1.
Participants of Right From the Start, 2000–2008 (n=4510).
| Frequency | % | |
|---|---|---|
| Age | ||
| 18–28 years | 1783 | 39.5 |
| 28–34 years | 2068 | 45.9 |
| 34–45 years | 659 | 14.6 |
| Missing | 0 | |
| Race/ethnicity | ||
| White, non-Hispanic | 3002 | 66.7 |
| Black, non-Hispanic | 960 | 21.3 |
| Hispanic ethnicity | 340 | 7.6 |
| Other | 201 | 4.5 |
| Missing | 7 | |
| Education | ||
| High school or less | 895 | 19.9 |
| Some college | 819 | 18.2 |
| College or more | 2795 | 62.0 |
| Missing | 1 | |
| Smoking | ||
| No | 3921 | 87.2 |
| Yes | 574 | 12.8 |
| Missing | 15 | |
| Gravidity | ||
| Primigravida | 1515 | 33.6 |
| One or more prior pregnancy | 2983 | 66.1 |
| Missing | 12 | |
| Bleeding | ||
| None | 3285 | 73.2 |
| Any bleeding | 1204 | 26.8 |
| Missing | 21 | |
| Heaviness of bleeding | ||
| No bleeding | 3285 | 73.2 |
| Spotting | 866 | 19.3 |
| Light | 240 | 5.4 |
| Heavy | 97 | 2.2 |
| Missing | 22 | |
| Outcome | ||
| Miscarriage | 517 | 11.5 |
| Live birth | 3690 | 81.8 |
| Other | 40 | 0.9 |
| Missing* | 263 | 5.8 |
*
Missing includes 69 women who are known to be beyond 20 weeks of pregnancy but had not reported deliveries at the time of this analysis. The remaining missing observations were censored at the last time of contact with the study, at median 15 gestational weeks and interquartile range 13 to 20.