Table 3 Bayley-III-NL developmental growth (DG) for each age group

Cognition^a

Number

5

10

6

7

28

DG in mo/6 mo, mean (±1 SD)

3.5 (3.2)

1.2 (2.0)

0.7 (1.0)

–0.9 (2.8)

1.0 (2.6)

Minimum–maximum

0.6–7.0

−1.9–3.9

−0.4–2.4

−7.0–1.7

−7.0–7.0

Receptive language

Number

4

7

4

5

20

DG in mo/6 mo, mean (±1 SD)

2.5 (1.5)

0.3 (2.5)

−0.4 (1.5)

0.1 (1.9)

0.6 (2.1)

Minimum–maximum

0.5–3.8

−2.8–3.1

−2.0–1.2

−3.0–2.2

−3.0–3.8

Expressive language

Number

4

7

4

5

20

DG in mo/6 mo, mean (±1 SD)

3.3 (1.5)

0.6 (2.4)

1.3 (0.9)

1.7 (2.5)

1.5 (2.1)

Minimum–maximum

1.0–4.4

−4.4–3.1

0.0–2.0

0.0–6.0

−4.4–6.0

Fine motor functioning

Number

4

8

6

5

23

DG in mo/6 mo, mean (±1 SD)

2.5 (2.5)

0.4 (3.8)

0.3 (1.2)

−0.5 (1.0)

0.5 (2.6)

Minimum–maximum

0.0–5.7

−6.7–7.2

−1.2–2.1

−1.8–0.6

−6.7–7.2

Gross motor functioning

Number

5

8

5

4

22

DG in mo/6 mo, mean (±1 SD)

1.4 (2.2)

2.0 (2.1)

−1.1 (2.4)

−1.0 (1.7)

0.7 (2.4)

Minimum–maximum

−1.0–4.3

−1.0–5.1

−4.0–1.2

−2.0–1.5

−4.0–5.1