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. Author manuscript; available in PMC: 2013 May 21.
Published in final edited form as: Res Dev Disabil. 2011 Feb 3;32(3):1194–1204. doi: 10.1016/j.ridd.2010.12.044

Table 4.

Fixed and Random Effects Estimates and Standard Errors for GHQ Scores, Mother Respondents Only.

GHQ Total GHQ Somatic GHQ Anxiety/Insomnia GHQ Social Dysfunction GHQ Severe Depression

Fixed Effects
Initial status Est SE Est SE Est SE Est SE Est SE
Intercept (12 yr mild ID boys) 19.97 ** 2.72 4.65 ** 0.91 6.22 ** 1.01 6.62 ** 0.58 2.36 * 0.85
Age 0.39 0.49 0.03 0.18 0.11 0.19 −0.07 0.12 0.37 0.17
Girls −3.49 3.64 0.90 1.34 −1.65 1.44 −0.69 0.76 −1.86 0.96
Moderate ID 1.33 3.77 0.48 1.19 −0.29 1.42 0.29 0.85 0.61 1.18
Severe ID 3.97 4.12 2.23 1.52 1.81 1.56 0.93 1.00 −0.99 1.02
Age × Girls −0.01 0.456 0.06 0.19 0.00 0.23 0.00 0.13 −0.08 0.15
Age × Moderate 1.43 * 0.61 0.40 * 0.21 −0.47 0.25 −0.12 0.13 0.47 ** 0.17
Age × Severe −1.06 0.68 −0.05 0.27 −0.27 0.28 −0.14 0.18 0.62 ** 0.18
Girls × Moderate −0.46 5.00 −1.08 1.74 0.36 2.00 0.38 1.10 0.10 1.36
Girls × Severe −5.98 7.15 −4.31 2.39 −2.59 3.07 −0.25 1.62 0.99 1.55

Rate of Change

Slope: (12 yr mild ID boys) 0.25 0.36 0.15 0.12 −0.02 0.12 0.15 0.08 −0.02 0.10
Age 0.01 0.06 0.01 0.02 0.01 0.02 0.02 0.01 −0.04 0.02
Girls 0.34 0.49 −0.12 0.17 0.22 0.18 −0.01 0.11 0.22 0.13
Moderate ID −0.32 0.46 −0.12 0.15 0.08 0.16 −0.11 0.11 −0.13 0.14
Severe ID −0.63 0.50 −0.27 0.18 −0.24 0.16 −0.14 0.13 0.04 0.13
Age × Girls −0.03 0.07 −0.01 0.02 −0.02 0.02 −0.01 0.02 0.023 0.02
Age × Moderate 0.09 0.07 0.03 0.03 0.03 0.03 −0.00 0.02 0.04 0.02
Age × Severe 0.02 0.09 −0.01 0.04 −0.00 0.03 −0.01 0.02 0.05 0.03
Girls × Moderate −0.06 0.61 0.14 0.21 −0.18 0.23 0.02 0.14 −0.07 0.17
Girls × Severe 1.24 0.94 0.56 0.30 0.40 0.37 0.18 0.20 0.13 0.24
Intercept Variance 138.58 ** 36.84 9.36 * 3.88 22.97 ** 5.69 2.73 2.16 10.65 ** 4.54
Slope Variance 1.56 * 0.47 0.09 0.06 0.20 ** 0.07 0.04 0.04 0.13 * 0.04
Residual Variance 50.99 ** 6.0 8.64 ** 1.00 7.99 ** 0.89 4.03 ** 0.54 3.37 ** 0.61

Note:

*

p<0.05

**

p<0.01

a

relative to Mild ID group; N=238.

Age = child's age at entry into study