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Table 1 CFA two-factor model–factor loadings (SEs) and fit indices - baseline HPES-Symptom using observational study data

From: Psychometric validation of the Hypoparathyroidism Patient Experience Scales (HPES)

HPES-Symptom domain/item

CFA 2-factor model with residual correlated standardized estimates

Factor 1

Factor 2

Physical

 1a. Muscle cramping

0.614* (0.037)

–

 1b. Muscle spasms

0.578* (0.040)

–

 1c. Muscle twitching

0.609* (0.037)

–

 1d. Muscle weakness

0.709* (0.031)

–

 1e. Tingling WITH numbness

0.691* (0.037)

–

 1f. Tingling WITHOUT numbness

0.607* (0.042)

–

 1g. Pain

0.760* (0.030)

–

 2a. Being sensitive to heat

0.669* (0.035)

–

 2b. Feeling tired

0.853* (0.018)

–

 2c. Trouble sleeping

0.755* (0.029)

–

 2d. Heart problems

0.643* (0.036)

–

 2e. Low energy

0.888* (0.016)

–

Cognitive

 3a. Remembering

–

0.893* (0.019)

 3b. Finding the right words

–

0.818* (0.023)

 3c. Concentrating

–

0.893* (0.018)

 3d. Understanding information

–

0.762* (0.028)

 3e. Thinking clearly

–

0.883* (0.019)

  1. Note: P value of Chi-square test < 0.0001, RMSEA = 0.097, CFI = 0.951, TLI = 0.943, SRMR = 0.055, the residual correlation between Item 1a and Item 1b is 0.528 and between Item 1b and Item 1c is 0.417
  2. CFA confirmatory factor analysis, CFI comparative fit index, HPES Hypoparathyroidism Patient Experience Scale, RMSEA root mean square error of approximation, SE standard error, SRMR standardized root mean residual, TLI Tucker-Lewis Index
  3. * P < 0.05 for H0: loading = 0