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Table 3 Fit of complete scales and model generation results

From: The psychometric properties of the subscales of the GHQ-28 in a multi-ethnic maternal sample: results from the Born in Bradford cohort

Groups Subscale Somatic (A)   Anxiety & insomnia (B) Social dysfunction (C) Severe depression (D)
  Fit indices Items 1–7 Items 1–4 Items 8–14 Items 10–13 Items 15–21 Items 15–19 Items 22–28 Items 23–26
English (White) χ 2(df) 1039 (14) 13 (2) 311 (14) 4 (2) 105 (14) 20 (5) 632 (14) 32 (2)
CFI 0.688 0.993 0.938 0.999 0.946 0.986 0.719 0.963
RMSEA 0.187 0.051 0.100 0.020 0.054 0.037 0.145 0.085
  SRMR 0.096 0.014 0.040 0.006 0.032 0.020 0.084 0.026
English (Pakistani) χ 2(df) 660 (14) 5 (2) 315 (14) 3 (2) 79 (14) 37 (5) 186 (14) 6 (2)
CFI 0.733 0.996 0.914 0.999 0.965 0.972 0.898 0.995
RMSEA 0.177 0.035 0.120 0.016 0.056 0.067 0.091 0.034
  SRMR 0.080 0.011 0.051 0.007 0.028 0.023 0.052 0.014
English (Other) χ 2(df) 232 (14) 2 (2) 140 (14) 0.5 (2) 38 (14) 10 (5) 102 (14) 19 (2)
CFI 0.782 1.0 0.908 1.0 0.965 0.986 0.879 0.945
RMSEA 0.158 0.0 0.120 0.0 0.053 0.041 0.100 0.117
  SRMR 0.075 0.009 0.051 0.004 0.032 0.025 0.052 0.034
Mirpuri (Pakistani and Other) χ 2(df) 75 (14) 1 (2) 30 (14) 6 (2) 20 (14) 4 (5)   1.2 (2)
CFI 0.802 1.0 0.927 0.956 0.962 1.0 * 1.0
RMSEA 0.141 0.0 0.073 0.091 0.045 0.0   0.0
  SRMR 0.067 0.13 0.051 0.031 0.045 0.025   0.002
Urdu (Pakistani and Other) χ 2(df) 153 (14) 3 (2) 126 (14) 9 (2) 83 (14) 9 (5) 26 (14) 9 (2)
CFI 0.838 0.997 0.884 0.983 0.844 0.982 0.960 0.937
RMSEA 0.123 0.027 0.110 0.072 0.086 0.033 0.036 0.072
  SRMR 0.062 0.012 0.055 0.023 0.055 0.028 0.043 0.037
Comments    Mirpuri and Urdu best fit for items 1–5   Several other models were a better fit for Mirpuri and Urdu   The full item set (15–21) fit all groups best except Urdu   24–27 fit all groups best except Mirpuri which was poor (CFI = 0.701, RMSEA = 0.163)
  1. Adequate fit statistics were considered to be CFI ≥0.95, RMSEA ≤0.08 and SRMR ≤0.06, bolded fit indices indicate less than satisfactory fit, * severe model estimation difficulties.