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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