Table 1.
Demographic Information of the Study Sample (N = 90)
| n (%) | Mean (SD) | Range | |
|---|---|---|---|
| Infant Characteristics | |||
| Gestational age at time of delivery (days) | 87 (96.7) | 275.6 (8.4) | 240–289 |
| Infant age at 7-month laboratory visit (days) | 61 (67.8) | 194.62 (22.2) | 156–275 |
| Sex (male) | 45 (50.1) | ||
| Race | |||
| Asian, American Indian, or Alaskan Native | 3 (3.3) | ||
| White/Caucasian | 66 (73.4) | ||
| Black/African American | 1 (1.1) | ||
| Multiracial | 19 (21.2) | ||
| Ethnicity | |||
| Hispanic/Latino | 21 (23.4) | ||
| Paternal Characteristics | |||
| Annual Household Income | |||
| Less than $19,999 | 10 (10.2) | ||
| $20,000 – $29,999 | 3 (3.3) | ||
| $30,000 – $39,999 | 7 (7.8) | ||
| $40,000 – $49,999 | 6 (6.7) | ||
| $50,000 – $79,999 | 32 (35.6) | ||
| $80,000 – $99,999 | 9 (10.0) | ||
| $100,000 and greater | 16 (17.8) | ||
| Relationship status (partnered) | |||
| Married | 76 (84.4) | ||
| Not married but live-in with the mother | 11 (12.2) | ||
| Not married and not live with the mother | 3 (3.3) | ||
| Race | |||
| Asian or Pacific Islander | 2 (2.2) | ||
| Black/African American | 1 (1.1) | ||
| White/Caucasian | 58 (64.4) | ||
| Other | 7 (7.8) | ||
| Multiracial | 3 (3.3) | ||
| Ethnicity | |||
| Hispanic/Latina | 10 (11.1) |