Table 2. Participant demographics.
| Active N (%) | Control N (%) | |
|---|---|---|
| Number of subjects | 314 | 324 |
| Gender | ||
| Male | 157 (50.0%) | 172 (53.1%) |
| Female | 157 (50.0%) | 152 (46.9%) |
| Age (years) | ||
| Mean (s.d.) | 4.86 (+1.12) | 4.94 (+1.13) |
| Hours/week in school | ||
| <15 h | 6 (1.9%) | 5 (1.5%) |
| 15–20 h | 33 (10.5%) | 44 (13.6%) |
| 21–30 h | 62 (19.7%) | 47 (14.5%) |
| 31–40 h | 143 (45.5%) | 159 (49.1%) |
| >40 h | 70 (22.3%) | 69 (21.3%) |
| Race (biological mother) | ||
| Asian (M) | 26 (8.3%) | 18 (5.6%) |
| American Indian or Alaska Native (M) | 8 (2.5%) | 15 (4.6%) |
| Black or African American (M) | 70 (22.3%) | 71 (21.9%) |
| Native Hawaiian or other Pacific Islander (M) | 1 (0.3%) | 2 (0.6%) |
| White (M) | 192 (61.1%) | 195 (60.2%) |
| Other (M) | 16 (5.1%) | 20 (6.2%) |
| Race (biological father) | ||
| Asian (F) | 26 (8.3%) | 11 (3.4%) |
| American Indian or Alaska Native (F) | 6 (1.9%) | 18 (5.6%) |
| Black or African American (F) | 67 (21.3%) | 70 (21.6%) |
| Native Hawaiian or other Pacific Islander (F) | 3 (1.0%) | 2 (0.6%) |
| White (F) | 174 (55.4%) | 194 (59.9%) |
| Other (F) | 30 (9.6%) | 27 (8.3%) |
| Ethnicity (biological mother) | ||
| Hispanic or Latino (M) | 52 (17.1%) | 51 (15.8%) |
| Not hispanic or Latino (M) | 252 (82.9%) | 272 (84.2%) |
| Ethnicity (biological father) | ||
| Hispanic or Latino (F) | 55 (18.3%) | 59 (18.3%) |
| Not hispanic or Latino F) | 245 (81.7%) | 263 (81.7%) |
| Overall | 300 | 322 |
| Health insurance | ||
| No | 8 (2.5%) | 12 (3.7%) |
| Yes | 306 (97.5%) | 312 (96.3%) |
| Income | ||
| <$15 000 | 9 (3.8%) | 22 (9.0%) |
| $15 000–$30 000 | 34 (14.2%) | 29 (11.9%) |
| $30 001–$50 000 | 26 (10.9%) | 23 (9.4%) |
| $50 001–$75 000 | 29 (12.1%) | 27 (11.1%) |
| $75 001–$100 000 | 46 (19.2%) | 36 (14.8%) |
| >$100 000 | 95 (39.7%) | 107 (43.9%) |
| Overall healtha | ||
| Mean (s.d.) | 9.2 (+0.9) | 9.2 (+0.9) |
Abbreviation: s.d., standard deviation.
a
On a scale of 1–10, how would you rate your child's overall health in the past week? 1=very unhealthy, 10=extremely healthy.