分组

3个月

6个月

1岁

2岁

3岁

A

+2.09 ± 1.45

+2.03 ± 1.39

+1.61 ± 0.77

+1.63 ± 1.01

+0.75 ± 0.50

B

+2.23 ± 1.52

+1.72 ± 1.12

+2.00 ± 1.28

+1.23 ± 1.00

+0.25 ± 0.71

C

+2.24 ± 1.74

+2.39 ± 1.67

+1.83 ± 1.29

+1.41 ± 1.11

−0.25 ± 1.06

D

+2.23 ± 1.83

+1.92 ± 1.21

+1.51 ± 0.94

+1.63 ± 1.01

+0.75 ± 0.50