Conditional variables at birth and 4 months old | Total | Communication | Gross motor | Fine motor | Problem solving | Personal-Social |
---|---|---|---|---|---|---|
2,714/31,399 (8.6 %) | 578/31,595 (1.8 %) | 526/31,590 (1.7 %) | 823/31,506 (2.6 %) | 1,204/31,590 (3.8 %) | 492/31,539 (1.6 %) | |
Length at birth | 0.99 (0.95–1.04) | 0.93 (0.83–1.03) | 0.90 (0.80-1.00) | 1.01 (0.92–1.10) | 1.01 (0.94–1.09) | 1.02 (0.91–1.15) |
Weight at birth | 0.91 (0.87–0.96) | 1.02 (0.92–1.14) | 0.97 (0.86–1.08) | 0.88 (0.80–0.96) | 0.88 (0.82–0.95) | 0.87 (0.77–0.98) |
cLength at 4 months old | 0.85 (0.82–0.88) | 0.84 (0.76–0.92) | 0.83 (0.77–0.90) | 0.82 (0.77–0.88) | 0.84 (0.79–0.90) | 0.84 (0.77–0.92) |
crWeight at 4 months old | 1.03 (0.98–1.08) | 0.88 (0.79–0.99) | 1.24 (1.11–1.38) | 0.99 (0.90–1.09) | 0.98 (0.90–1.06) | 1.11 (0.98–1.25) |