Validity and reliability testing of the Pelvic Pain Impact Questionnaire

Area of Science:

• Gynecology
• Pain Medicine
• Health Psychology

Background:

• Chronic pelvic pain (CPP) and endometriosis significantly impact women's quality of life.
• Cross-cultural adaptation of validated instruments is crucial for accurate assessment in diverse populations.

Purpose of the Study:

• To perform a Hungarian cross-cultural adaptation of the Pelvic Pain Impact Questionnaire (PPIQ).
• To assess the reliability and validity of the Hungarian version (PPIQ-HU) in women with CPP and endometriosis.

Main Methods:

• The study involved 240 Hungarian women (aged 18-49) with CPP and endometriosis.
• Reliability was assessed using internal consistency (Cronbach's α, McDonald's Ω) and test-retest (ICC).
• Validity was evaluated using Confirmatory Factor Analysis (CFA), convergent validity (Spearman's, Bayesian correlations with SF-36, NRS, PCS, PSS), and discriminant validity.

Main Results:

• The PPIQ-HU demonstrated excellent reliability: Cronbach's α = 0.881, McDonald's Ω = 0.885, ICC = 0.977.
• Convergent validity was confirmed with significant correlations (r = 0.243** to 0.706**, p < 0.001).
• Confirmatory Factor Analysis supported the construct validity of the PPIQ-HU.

Conclusions:

• The PPIQ-HU is a reliable and valid instrument for assessing the impact of pelvic pain in the daily lives of Hungarian women with endometriosis.
• This validated tool will aid in better management and understanding of pelvic pain in this population.