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Table 5 The effect of time on rates of change in physical and psychosocial scores (level-1 model)

From: Health-related quality of life of children with physical disabilities: a longitudinal study

Parameter

Physical

Psychosocial

Average scores at Time 1

38.3

44.2

95% CI

[36.8, 39.8]

[43.2, 45.3]

SD of between-child differences

13.8

9.4

50% range of differences

29.0, 47.6

37.9, 50.6

Average change per time

0.3

0.6

95% CI

[–0.3, 0.9]

[0.2., 1.0]

SD of between-child differences

5.0

1.9

50% range of differences

-1.2, 1.8

-0.7, 1.9

Within-child residual SD

8.4

5.7