Table 1.
Characteristics of mothers from telephone interview by case status
| Characteristic | Case mothers (n = 234) n (%) | Noncase mothers (n = 215) n (%) | P-value |
|---|---|---|---|
| Race | |||
| White, not of Hispanic origin | 186 (79) | 187 (87) | <0.01 |
| African American or Black, not of Hispanic origin | 5 (2) | 11 (5) | |
| Hispanic | 25 (11) | 6 (3) | |
| Native American Indian or Alaskan Native | 8 (3) | 2 (1) | |
| Asian, Asian American, or Pacific Islander | 7 (3) | 6 (3) | |
| Other | 3 (1) | 3 (1) | |
| Highest educational level | |||
| 11 years or less | 24 (10) | 6 (3) | 0.05 |
| High school graduate | 63 (27) | 58 (27) | |
| Post high school, vocational or business school | 17 (7) | 22 (10) | |
| Some college but no degree | 52 (22) | 52 (24) | |
| College graduate | 59 (25) | 57 (27) | |
| Advanced degree | 19 (8) | 20 (9) | |
| Combined annual household incomea | |||
| Up to $10 000 | 18 (8) | 13 (6) | 0.08 |
| >$10 000 up to $20 000 | 34 (15) | 17 (8) | |
| >$20 000 up to $30 000 | 34 (15) | 37 (17) | |
| >$30 000 up to $40 000 | 31 (13) | 30 (14) | |
| >$40 000 up to $50 000 | 32 (14) | 22 (10) | |
| >$50 000 up to $75 000 | 49 (21) | 45 (21) | |
| >$75 000 | 34 (15) | 51 (24) | |
| Marital status | |||
| Married | 194 (83) | 178 (83) | 0.84 |
| Living with someone in a marriage-like relationship | 14 (6) | 12 (6) | |
| Separated | 4 (2) | 7 (3) | |
| Divorced | 5 (2) | 5 (2) | |
| Widowed | 1 (<1) | 2 (1) | |
| Never married | 16 (7) | 11 (5) | |
|
| |||
| Mean [SD] | Mean [SD] | ||
|
| |||
| Age in years at index child’s birth | 29.1 [5.5] | 30.0 [5.5] | 0.08 |
| Age in years at telephone interview completion | 31.8 [5.6] | 33.7 [5.9] | <0.01 |
SD, standard deviation.
a
Household income missing for two case mothers.
Note. Percentages may not add to 100% due to rounding.