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Table 3 Five a priori formulated hypotheses and correlation coefficients values for construct validity (n = 130)

From: Cross-cultural adaptation, reliability, and validity of a Chinese version of the pelvic girdle questionnaire

Hypothesis Instruments compared Spearman’s correlation coefficient Hypothesis confirmed?
High correlation between PGQ total score and ODI PGQ total-ODI 0.84 Yes
High correlation between PGQ activity subscale and ODI PGQ activity subscale-ODI 0.82 Yes
Moderate correlation between PGQ symptom subscale and ODI PGQ symptom subscale-ODI 0.80 NO
High correlation between PGQ total score and NRS PGQ total-NRS 0.73 Yes
High correlation between PGQ symptom subscale and NRS PGQ symptom subscale-NRS 0.72 Yes
  1. Note: PGQ Pelvic Girdle Questionnaire, ODI Oswestry Disability Index, NRS Numeric Rating Scale