Table 3 Descriptive data of the participated children in the 10 age groups, including the mean chronological age, male to female ratio, mean IQ, and mean total language age of children in each age group
Age groups (30 children in each group), age range (in years) | Chronological age (mean ±SD) | Male to female ratio | IQ* (mean ±SD) | Total language age** (mean ±SD) |
|---|---|---|---|---|
Age group (1): 1 year and 6 months ≤2 years | 1.43 (±0.3) | 9:21 | 94.2 (±0.08) | 1.4 (±0.18) |
Age group (2): 2≤2 years and 6 months | 2.35 (±0.17) | 12:18 | 94.7 (±0.11) | 2.39 (±0.23) |
Age group (3): 2 years and 6 months ≤3 years | 2.86 (±0.07) | 12:18 | 96 (±0.24) | 2.93 (±0.07) |
Age group (4): 3 ≤3 years and 6 months | 3.34 (±0.17) | 12:18 | 97 (±0.13) | 3.47 (±0.28) |
Age group (5): 3 years and 6 months ≤4 years | 3.84 (±0.11) | 9:21 | 94.9 (±0.23) | 3.92 (±0.09) |
Age group (6): 4 ≤4 years and 6 months | 4.3 (±0.2) | 12:18 | 94.7 (±0.04) | 4.53 (±0.25) |
Age group (7): 4 years and 6 months ≤5 year | 4.82 (±0.11) | 12:18 | 97.4 (±0.17) | 4.91 (±0.16) |
Age group (8): 5 ≤5 years and 6 months | 5.34 (±0.17) | 9:21 | 98.2 (±0.2) | 5.43 (±0.24) |
Age group (9): 5 years and 6 months ≤6 year | 5.69 (±0.30) | 21:9 | 97.4 (±0.22) | 5.92 (±0.16) |
Age group (10): 6 ≤6 years and 6 months | 6.27 (±0.19) | 9:21 | 98.6 (±0.09) | 6.43 (±0.19) |
Age group (11): 6 years and 6 months ≤7 years | 6.81 (±0.13) | 6:24 | 98.8 (±0.62) | 6.94 (±0.17) |
Age group (12): 7 year ≤7 years and 4 months | 7.33 (±0.3) | 10:20 | 98.5 (±0.3) | 7.41 (±0.11) |