Table 1.
Participant characteristics
| Whole sample | Males | Females | p | |
|---|---|---|---|---|
|
| ||||
| N | 62 | 29 | 33 | |
| Age | 14.4(0.7) | 14.3(0.6) | 14.4(0.8) | 0.514 |
| Race | 0.202 | |||
| Caucasian % | 56.5% | 55.2% | 57.6% | |
| African American | 32.3% | 41.4% | 24.2% | |
| Hispanic/Latino | 3.2% | 0% | 6.1% | |
| Other | 8.1% | 3.4% | 12.1% | |
| Socioeconomic status index (z-score)a | 0.024(0.980) | 0.016(1.025) | 0.031(0.956) | 0.972 |
| Parental education (years, mean) | 16.3(2.7) | 16.6(2.9) | 16.1(2.5) | |
| Household income (median) | $100,00-$149,999 | $75,000-$99,999 | $100,00-$149,999 | |
| Pubertal development | 2.82(0.58) | 2.59(0.46) | 3.03(0.61) | 0.003 |
| BMI z-score | 0.34(1.04) | 0.19(1.03) | 0.47(1.05) | 0.294 |
| Percentilea | 59.9(29.6) | 55 1(30 5) | 64.1(28.6) | 0.244 |
| Intelligence (K-BIT) | 110.2(14.2) | 111.4(17.7) | 109.0(10.0) | 0.528 |
| Blood DHA (% of total fatty acids)a | 1.87(0.50) | 1.81(0.42) | 1.93(0.56) | 0.521 |
| N3 Index (% of total fatty acids)a | 2.17(0.60) | 2.10(0.47) | 2.24(0.70) | 0.667 |
a
Mann-Whitney U-test used to examine difference between male and female means.
Note: Group means and standard deviations listed, except where indicated.