Table 1.
Summary of sociodemographic data for participants in the Typical Speaking (TS) and Speech Delay (SD) groups.
| Age (months) | Sex | Maternal Educationa |
Maternal Ethnicity b |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Group | n | M | SD | Range | %Male | % Female | M | SD | |
| TS | |||||||||
| 1 | 16 | 38.5 | 1.5 | 36–40 | 25 | 75 | 3.8 | 0.5 | EA=100.0% |
| 2 | 20 | 44.6 | 1.7 | 42–47 | 35 | 65 | 3.5 | 0.8 | EA=75.0% AA=15.0% AsA=5.0% ME=5.0% |
| 3 | 19 | 51.2 | 1.6 | 48–53 | 53 | 47 | 3.5 | 0.9 | EA=78.9% AA=15.8% ME=5.3% |
| 4 | 8 | 55.5 | 1.2 | 54–57 | 50 | 50 | 3.5 | 1.1 | EA=87.5% AA=12.5% |
| Total | 63 | 46.4 | 6.1 | 36–57 | 40 | 60 | 3.6 | 0.8 | EA=84.1% AA=11.1% AsA=1.6% ME=3.2% |
| SD | |||||||||
| 1 | 30 | 38.8 | 1.6 | 36–41 | 74 | 26 | 3.3 | 0.8 | EA=77.4% AA=9.7% L=3.2% AsA=3.2% ME=6.5% |
| 2 | 20 | 44.3 | 1.9 | 42–47 | 65 | 35 | 3.2 | 0.8 | EA=60.0% AA=35.0% ME=5.0% |
| 3 | 29 | 49.9 | 1.7 | 48–53 | 72 | 28 | 3.4 | 0.6 | EA=82.8% AA=6.9% AsA=3.4% ME=6.9% |
| 4 | 16 | 56.3 | 1.9 | 54–60 | 69 | 31 | 2.9 | 0.9 | EA=68.8% AA=25.0% ME=6.2% |
| Total | 95 | 46.3 | 6.5 | 36–60 | 71 | 29 | 3.2 | 0.8 | EA=74.0% AA=16.7% L=1.0% AsA=2.0% ME=6.3% |
a
Maternal Education Levels: 1 - some high school education; 2 - high school graduate; 3 - some college education; 4 – college graduate.
b
Ethnicity Codes –AA=African-American; AsA=Asian-American; EA=European-American; L=Latino; NA=Native American; PI=Pacific Islander; ME=Mixed Ethnicity