Table 2.
Percentage of children aged 18 months to 5 years with unlikely, possible and probable developmental delay, by selected characteristics
| Children with unlikely delay (n=14736) | Children with possible delay (n=3147) | Children with probable delay (n=2061) | |
|---|---|---|---|
| Weighted percentage (SE) | |||
| Total | 71.8 (0.8) | 16.3 (0.7) | 12.0 (0.6) |
| Child characteristics | |||
| Age | |||
| 18 months—2 years | 77.9 (1.2) | 13.9 (0.9) | 8.2 (0.9) |
| 3 years | 73.5 (1.6) | 15.6 (1.4) | 10.9 (1.0) |
| 4 years | 71.9 (1.6) | 17.3 (1.4) | 10.8 (0.9) |
| 5 years | 62.1 (2.0) | 19.0 (1.8) | 18.9 (1.6) |
| Sex | |||
| Male | 68.7 (1.1) | 17.7 (0.9) | 13.6 (0.9) |
| Female | 75.1 (1.2) | 14.8 (1.0) | 10.2 (0.8) |
| Birth weight | |||
| Normal | 73.1 (0.8) | 16.0 (0.7) | 10.9 (0.6) |
| Low | 59.5 (3.4) | 20.7 (3.1) | 19.8 (2.7) |
| Ethnicity, race and primary household language | |||
| Non-Hispanic White | 76.8 (0.9) | 15.1 (0.7) | 8.2 (0.5) |
| Non-Hispanic Black | 66.5 (2.2) | 18.1 (2.0) | 15.4 (1.4) |
| Non-Hispanic Multiracial | 74.6 (3.4) | 15.6 (2.6) | 9.8 (2.1) |
| Non-Hispanic Other | 71.5 (3.0) | 13.1 (2.0) | 15.4 (2.4) |
| Hispanic—English-speaking household | 69.2 (3.6) | 17.8 (3.2) | 13.0 (2.5) |
| Hispanic—non-English-speaking household | 57.2 (3.4) | 19.9 (2.7) | 22.9 (2.8) |
| Household characteristics | |||
| Household Income (% of poverty level) | |||
| ≤100 | 64.6 (2.0) | 17.1 (1.6) | 18.3 (1.6) |
| >100–200 | 67.5 (2.1) | 17.4 (1.7) | 15.1 (1.7) |
| >200–400 | 74.3 (1.3) | 16.3 (1.1) | 9.4 (0.9) |
| >400 | 77.8 (1.4) | 14.7 (1.2) | 7.5 (0.8) |
| Care arrangement | |||
| Out of home non-relative care arrangement | |||
| <10 h/week of non-relative care | 71.8 (1.1) | 16.4 (1.0) | 11.8 (0.8) |
| >10 h/week by daycare centre | 72.5 (1.3) | 16.1 (1.1) | 11.4 (0.9) |
| >10 h/week at some other home | 69.0 (2.9) | 15.9 (1.7) | 15.2 (3.0) |
| Current insurance status | |||
| Non-public | 75.8 (0.9) | 15.6 (0.8) | 8.6 (0.6) |
| Medicaid/SCHIP | 65.1 (1.6) | 17.6 (1.4) | 17.3 (1.3) |
| Uninsured | 71.2 (3.0) | 15.6 (2.6) | 13.2 (1.8) |
| Missing | 68.7 (4.6) | 15.8 (3.8) | 15.5 (3.2) |
| Consistency of insurance | |||
| Insured full year | 72.0 (0.9) | 16.2 (0.7) | 11.8 (0.7) |
| Insured part year | 72.3 (2.6) | 16.5 (2.5) | 11.2 (1.2) |
| Uninsured all year | 63.9 (4.6) | 17.9 (3.4) | 18.2 (3.6) |
| Highest level of parent/guardian education | |||
| More than high school | 75.1 (0.9) | 16.0 (0.8) | 8.9 (0.5) |
| High school | 68.8 (2.0) | 15.6 (1.5) | 15.6 (1.6) |
| Less than high school | 56.4 (3.6) | 20.0 (3.3) | 23.6 (3.1) |
| Family structure | |||
| Two parent biological/adopted | 73.6 (0.9) | 15.4 (0.7) | 11.0 (0.7) |
| Two parent step-family | 65.4 (6.0) | 21.3 (6.09) | 13.3 (2.6) |
| Single mother, no father present | 66.1 (2.2) | 19.0 (2.08) | 14.9 (1.4) |
| Other | 67.7 (3.6) | 16.7 (3.2) | 15.6 (2.2) |
| Geographic location | |||
| US census region | |||
| Northeast | 71.2 (1.6) | 14.7 (1.2) | 14.1 (1.3) |
| Midwest | 74.7 (1.1) | 15.6 (0.9) | 9.7 (0.7) |
| South | 70.9 (1.2) | 16.8 (1.0) | 12.4 (0.8) |
| West | 71.0 (2.4) | 17.1 (2.0) | 11.9 (1.7) |
| Metropolitan Statistical Area (MSA) | |||
| MSA | 71.3 (0.9) | 16.3 (0.8) | 12.3 (0.7) |
| Non-MSA | 74.2 (1.3) | 15.9 (1.1) | 9.9 (0.8) |
With the exception of ‘Current insurance status,’ missing categories are not presented. Many missing categories were unreliable due to sample sizes <30 or relative SEs>30%. n, unweighted observations.