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Table 4 Model fit statistics of PROMIS parent proxy domains

From: Measuring Duchenne muscular dystrophy impact: development of a proxy-reported measure derived from PROMIS item banks

Domain No. items RMSEA 90% CI, LL 90% CI, UL CFI TLI Marginal reliability
Fatigue impact 5 0.095 0.061 0.133 0.998 0.997 0.92
Strength impact 4 0.070 0.022 0.131 0.999 0.997 0.87
Negative affect 9 0.070 0.053 0.089 0.994 0.989 0.88
Sleep-device symptoms* 4 0.140 0.089 0.198 0.971 0.914 0.75
Cognitive function 9 0.070 0.022 0.131 0.999 0.997 0.89
Upper extremity function 5 0.110 0.078 0.145 0.999 0.997 0.91
Positive affect 4 0.078 0.028 0.135 0.999 0.997 0.87
Mobility* 13 0.145 0.133 0.158 0.987 0.983 0.93
  1. Bifactor model
  2. *Clinimetric index