Table 1.
Demographic characteristics, pregnancy history, and running history of the study population (N = 110)
| Variables | Mean ± SD or n (%) | Range |
|---|---|---|
| Age, y | 44.3 ± 7.8 | 28-63 |
| Body mass index, kg/m2 | 20.9 ± 1.6 | 17.0-25.3 |
| Education | ||
| 2-year college degree or less | 6 (5.5) | |
| 4-year college degree | 41 (37.3) | |
| Postgraduate degree | 63 (57.3) | |
| Ethnicity | ||
| African-American | 2 (1.8) | |
| Asian or Pacific Islander | 11 (10.0) | |
| Latino | 6 (5.5) | |
| White | 90 (81.8) | |
| Other | 1 (0.9) | |
| Gravidity | 2.5 ± 1.3 | 1-7 |
| Ever miscarried | 32 (29.1) | |
| Ever had a preterm birth | 15 (13.6) | |
| Average weekly miles (past year) | 33.9 ± 15.0 | 0-75 |
| Highest running level ever attained | ||
| Recreational/club team | 46 (41.8) | |
| Varsity competitor in high school or college | 29 (26.4) | |
| Nationally ranked (as a junior, college, open, or master’s runner) | 35 (31.8) |