[Model 1] Conditional variables at birth, 4, 7 and 10 months old | Total | Communication | Gross motor | Fine motor | Problem solving | Personal-Social |
1,441/8,488 (17.0 %) | 396/8,534 (4.6 %) | 458/8,532 (5.4 %) | 372/8,526 (4.4 %) | 511/8,519 (6.0 %) | 303/8,506 (3.6 %) | |
Length at birth | 1.00 (0.94–1.07) | 0.99 (0.87–1.12) | 1.01 (0.90–1.13) | 1.03 (0.90–1.17) | 0.97 (0.87–1.09) | 1.00 (0.86–1.16) |
Weight at birth | 0.97 (0.91–1.03) | 0.97 (0.85–1.10) | 0.96 (0.86–1.08) | 1.00 (0.88–1.14) | 0.97 (0.87–1.08) | 0.92 (0.79–1.06) |
cLength at 4 months old | 0.92 (0.87–0.98) | 0.87 (0.78–0.98) | 0.98 (0.89–1.09) | 0.81 (0.73–0.91) | 0.86 (0.78–0.95) | 0.79 (0.70–0.90) |
crWeight at 4 months old | 0.90 (0.84–0.97) | 0.96 (0.83–1.10) | 0.88 (0.77-1.00) | 0.89 (0.78–1.03) | 0.86 (0.76–0.97) | 0.84 (0.72–0.98) |
cLength at 7 months old | 1.07 (1.00-1.14) | 1.14 (0.99–1.30) | 1.13 (0.99–1.28) | 1.08 (0.94–1.24) | 1.05 (0.95–1.18) | 1.01 (0.89–1.18) |
crWeight at 7 months old | 0.98 (0.89–1.07) | 0.81 (0.65-1.00) | 0.91 (0.74–1.10) | 0.90 (0.72–1.10) | 1.00 (0.85–1.15) | 1.03 (0.86–1.22) |
cLength at 10 months olda | 0.98 (0.90–1.07) | 0.91 (0.77–1.08) | 1.13 (0.95–1.33) | 1.00 (0.83–1.20) | 1.10 (0.94–1.27) | 0.87 (0.73–1.05) |
crWeight at 10 months oldb | 0.94 (0.87–1.03) | 0.94 (0.83–1.16) | 0.90 (0.81–1.05) | 1.02 (0.85–1.33) | 0.96 (0.84–1.17) | 0.97 (0.81–1.26) |
[Model 2] Conditional variables at birth, 4 and 7 months old | Total | Communication | Gross motor | Fine motor | Problem solving | Personal-Social |
2,281/13,689 (16.7 %) | 612/13,757 (4.4 %) | 698/13,759 (5.1 %) | 614/13,753 (4.5 %) | 814/13,742 (5.9 %) | 481/13,722 (3.5 %) | |
Length at birth | 1.02 (0.97–1.07) | 1.00 (0.90–1.10) | 1.03 (0.94–1.14) | 1.01 (0.91–1.12) | 1.00 (0.91–1.09) | 1.04 (0.93–1.18) |
Weight at birth | 0.96 (0.91–1.01) | 0.96 (0.87–1.07) | 0.94 (0.85–1.03) | 0.97 (0.87–1.07) | 0.94 (0.86–1.03) | 0.90 (0.80–1.01) |
cLength at 4 months old | 0.93 (0.89–0.97) | 0.88 (0.80–0.97) | 0.97 (0.89–1.06) | 0.85 (0.78–0.93) | 0.89 (0.82–0.97) | 0.81 (0.73–0.90) |
crWeight at 4 months old | 0.90 (0.85–0.95) | 0.88 (0.79–0.99) | 0.89 (0.80–0.99) | 0.91 (0.81–1.01) | 0.85 (0.77–0.93) | 0.90 (0.79–1.01) |
cLength at 7 months old | 1.08 (1.02–1.14) | 1.09 (0.97–1.23) | 1.14 (1.02–1.27) | 1.16 (1.03–1.29) | 1.11 (1.00-1.23) | 1.05 (0.95–1.19) |
crWeight at 7 months old | 1.00 (0.92–1.08) | 0.87 (0.72–1.04) | 0.99 (0.84–1.15) | 0.94 (0.79–1.10) | 0.99 (0.86–1.11) | 1.15 (0.99–1.31) |
[Model 3] Conditional variables at birth, 4 and 10 months old | Total | Communication | Gross motor | Fine motor | Problem solving | Personal-Social |
3,478/21,577 (16.1 %) | 910/21,687 (4.2 %) | 1086/21,684 (5.0 %) | 923/21,677 (4.3 %) | 1,232/21,656 (5.7 %) | 723/21,626 (3.3 %) | |
Length at birth | 1.00 (0.96–1.04) | 0.93 (0.85–1.01) | 0.98 (0.91–1.06) | 0.99 (0.91–1.08) | 1.02 (0.95–1.10) | 0.97 (0.88–1.07) |
Weight at birth | 0.97 (0.93–1.01) | 0.98 (0.90–1.06) | 0.98 (0.91–1.06) | 0.99 (0.91–1.08) | 0.93 (0.87-1.00) | 0.92 (0.83–1.01) |
cLength at 4 months old | 0.92 (0.89–0.95) | 0.85 (0.79–0.92) | 0.97 (0.90–1.04) | 0.85 (0.79–0.91) | 0.87 (0.82–0.93) | 0.83 (0.76–0.90) |
crWeight at 4 months old | 0.92 (0.88–0.96) | 0.94 (0.85–1.03) | 0.91 (0.84-1.00) | 0.89 (0.82–0.98) | 0.86 (0.80–0.93) | 0.87 (0.79–0.96) |
cLength at 10 months olda | 1.00 (0.96–1.05) | 0.91 (0.85–0.99) | 1.00 (0.92–1.09) | 1.00 (0.91–1.09) | 1.05 (0.97–1.14) | 1.01 (0.92–1.11) |
crWeight at 10 months oldb | 1.02 (0.97–1.07) | 1.01 (0.92–1.11) | 0.91 (0.85–0.99) | 0.96 (0.88–1.06) | 1.01 (0.93–1.10) | 1.08 (0.98–1.17) |