Table 4 Mean score, p-value and effect size for SF-36 psychosocial summary score comparing CBCL/1.5–5 normal with borderline and clinical groups

NICU sample

Internalizing

49.5 (48.9,50.2) n = 841

42.5 (39.6,45.5) n = 67

40.5 (37.6,43.4) n = 78

<.001

.95

Externalizing

48.9 (48.3,49.6) n = 925

41.6 (38.0,45.2) n = 45

35.0 (29.6,40.2) n = 32

<.001

1.43

Total

49.3 (48.6,49.9) n = 831

43.3 (39.7,47.0) n = 34

35.3 (31.0, 39.5) n = 39

<.001

1.45

Healthy children

Internalizing

49.6 (48.6,50.6) n = 324

40.7 (36.8,44.6) n = 20

40.1 (34.0,46.2) n = 16

<.001

1.03

Externalizing

49.3 (48.3,50.3) n = 342

43.4 (37.0,49.8) n = 14

34.1 (22.5,45.8) n = 8

<.001

1.67

Total

49.4 (48.4,50.4) n = 330

41.5 (34.0,49.0) n = 12

36 (27.0, 44.0) n = 11

<.001

1.46