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Table 3 Reliability indices (Cronbach’s α coefficient, intra-class correlation coefficient, and split-half reliability) for the Chi-MPCOSQ and domains

From: Psychometric properties of the Chinese version of the modified polycystic ovary syndrome health-related quality-of-life questionnaire

IndexChi-MPCOSQDomains
HirsutismAcneWeightInfertilityEmotional disturbanceMenstrual symptomsMenstrual predictability
Cronbach’s α coefficienta0.8780.8870.9310.9360.8840.9490.6880.830
Intra-class correlation coefficientb0.8920.8890.8900.9160.8280.9020.8980.890
Split-half reliabilityc0.938       
  1. aCronbach’s α coefficient was used to evaluate internal consistency reliability. A score ≥ 0.70 was regarded as acceptable
  2. bIntra-class correlation coefficient was used to evaluate test-retest reliability. A score of > 0.60 was regarded as high agreement
  3. cSplit-half reliability ≥0.70 was regarded as acceptable
  4. Abbreviations: Chi-MPCOSQ, Chinese version of the modified polycystic ovary syndrome health-related quality-of-life questionnaire; PCOS; polycystic ovary syndrome