[Model 1] Conditional variables at birth, 4, 7 and 10 months old | Total | Communication | Gross motor | Fine motor | Problem solving | Personal-Social |
1,117/8,211 (13.6 %) | 199/8,253 (2.4 %) | 540/8,254 (6.5 %) | 235/8,254 (2.8 %) | 348/8,244 (4.2 %) | 202/8,229 (2.5 %) | |
Length at birth | 1.04 (0.97–1.12) | 0.92 (0.77–1.11) | 1.05 (0.94–1.17) | 1.05 (0.88–1.24) | 1.01 (0.88–1.16) | 0.99 (0.82–1.18) |
Weight at birth | 0.89 (0.83–0.96) | 0.96 (0.80–1.16) | 0.87 (0.78–0.97) | 0.87 (0.73–1.03) | 0.86 (0.75–0.99) | 0.94 (0.78–1.13) |
cLength at 4 months old | 0.90 (0.84–0.96) | 0.85 (0.73–1.01) | 1.02 (0.92–1.12) | 0.77 (0.66–0.90) | 0.82 (0.73–0.93) | 0.78 (0.67–0.92) |
crWeight at 4 months old | 0.96 (0.89–1.04) | 0.80 (0.66–0.97) | 0.94 (0.84–1.05) | 0.97 (0.81–1.16) | 0.91 (0.79–1.06) | 0.88 (0.72–1.06) |
cLength at 7 months old | 1.16 (1.07–1.26) | 1.17 (0.95–1.43) | 1.21 (1.08–1.37) | 1.06 (0.91–1.29) | 1.14 (0.98–1.33) | 1.10 (0.91–1.35) |
crWeight at 7 months old | 1.10 (0.98–1.23) | 0.91 (0.67–1.20) | 1.19 (1.00-1.39) | 0.92 (0.70–1.21) | 1.01 (0.81–1.25) | 0.98 (0.73–1.28) |
cLength at 10 months olda | 0.97 (0.88–1.08) | 0.94 (0.73–1.21) | 1.04 (0.89–1.21) | 1.04 (0.82–1.32) | 1.07 (0.88–1.29) | 0.87 (0.69–1.12) |
crWeight at 10 months oldb | 1.02 (0.91–1.18) | 0.87 (0.73–1.17) | 1.03 (0.87–1.27) | 1.17 (0.86–1.65) | 1.23 (0.94–1.63) | 0.90 (0.75–1.23) |
[Model 2] Conditional variables at birth, 4 and 7 months old | Total | Communication | Gross motor | Fine motor | Problem solving | Personal-Social |
1,751/13,220 (13.2 %) | 313/13,289 (2.4 %) | 810/13,293 (6.1 %) | 371/13,292 (2.8 %) | 544/13,278 (4.1 %) | 317/13,250 (2.4 %) | |
Length at birth | 1.01 (0.95–1.07) | 0.93 (0.80–1.08) | 1.06 (0.97–1.16) | 1.01 (0.88–1.16) | 0.94 (0.84–1.05) | 0.98 (0.85–1.14) |
Weight at birth | 0.94 (0.88–0.99) | 0.95 (0.82–1.10) | 0.86 (0.78–0.94) | 0.96 (0.84–1.10) | 0.96 (0.86–1.07) | 0.95 (0.82–1.10) |
cLength at 4 months old | 0.90 (0.86–0.95) | 0.85 (0.75–0.97) | 1.01 (0.94–1.10) | 0.83 (0.74–0.94) | 0.82 (0.75–0.91) | 0.81 (0.71–0.92) |
crWeight at 4 months old | 0.93 (0.88–0.99) | 0.78 (0.67–0.92) | 0.92 (0.83–1.01) | 0.96 (0.84–1.11) | 0.89 (0.79–0.99) | 0.94 (0.81–1.09) |
cLength at 7 months old | 1.17 (1.10–1.26) | 1.13 (0.96–1.35) | 1.22 (1.10–1.35) | 1.15 (0.98–1.34) | 1.14 (1.01–1.30) | 1.07 (0.92–1.27) |
crWeight at 7 months old | 1.10 (0.99–1.21) | 0.89 (0.72–1.13) | 1.19 (1.03–1.37) | 0.94 (0.76–1.18) | 1.07 (0.89–1.27) | 0.98 (0.78–1.24) |
[Model 3] Conditional variables at birth, 4 and 10 months old | Total | Communication | Gross motor | Fine motor | Problem solving | Personal-Social |
2,669/20,756 (12.9 %) | 441/20,857 (2.1 %) | 1,263/20,864 (6.1 %) | 537/20,858 (2.6 %) | 827/20,837 (4.0 %) | 463/20,799 (2.2 %) | |
Length at birth | 1.02 (0.97–1.07) | 0.95 (0.84–1.07) | 1.03 (0.95–1.10) | 1.03 (0.92–1.15) | 1.03 (0.94–1.12) | 1.04 (0.92–1.17) |
Weight at birth | 0.92 (0.88–0.97) | 0.95 (0.84–1.08) | 0.92 (0.85–0.99) | 0.89 (0.79–0.99) | 0.91 (0.83–0.99) | 0.87 (0.77–0.98) |
cLength at 4 months old | 0.91 (0.88–0.95) | 0.85 (0.77–0.95) | 0.95 (0.89–1.01) | 0.88 (0.80–0.97) | 0.86 (0.80–0.93) | 0.87 (0.78–0.97) |
crWeight at 4 months old | 0.98 (0.93–1.03) | 0.86 (0.76–0.99) | 0.98 (0.91–1.06) | 0.94 (0.83–1.06) | 0.96 (0.87–1.05) | 0.88 (0.78–1.01) |
cLength at 10 months olda | 1.06 (1.01–1.12) | 0.99 (0.88–1.13) | 1.06 (0.98–1.15) | 1.08 (0.96–1.22) | 1.15 (1.04–1.26) | 1.02 (0.90–1.16) |
crWeight at 10 months oldb | 1.05 (0.99–1.13) | 0.98 (0.84–1.15) | 1.04 (0.94–1.14) | 0.96 (0.85–1.11) | 1.05 (0.93–1.18) | 0.95 (0.83–1.11) |