Reliability and validity of the Cervantes Health-Related Quality-of-Life scale in Spanish elderly post-menopausal women
Dr. Santiago Palacios
Disclosure : This study was funded by Pfizer S.L.U. All authors had complete access to the data, participated in the analysis and/or interpretation of results, and drafted the poster. SFdC and JR are employees of Pfizer, S.L.U. All other authors declare no conflicts of interest
9 slide(s) – English – 2012-03-28
Objective. To explore the psychometric properties of the menopause-specific Cervantes scale in elderly post-menopausal women older than 64 years.
Methods. We analyzed a random sub-sample of women older than 64 years who were enrolled in a cross-sectional, epidemiological study including post-menopausal women attending outpatients clinics of Gynecology in Spain. Along with the self-administered 31-items Cervantes scale, the Spanish version of the SF-12v2 and socio-demographics data were also recorded. Feasibility, reliability, criterion and construct validities were explored.
Results. 312 post-menopausal women [mean (SD) age of 69.7 (4.2) years (range: 65-87) were included. Missing questionnaires was very low; 0.63%. Ceiling effect was negligible, while floor effect was observed in item #24 (51.6%) and #17 (47.1%). Cronbach’s α coefficients were above 0.7 in all cases; ranging from 0.915 (whole scale) to 0.708 (aging sub-domain). The scale correlated high and significantly with mental and physical summary components of the SF-12v2; -0.713 and -0.608, respectively (p<0.001). Vascular symptoms, sexual and partner relationship domains showed poor negative correlations with SF-12v2 (-0.09 to -0.38), while the other domains showed negative and high to moderate correlations (-0.43 to -0.71, p<0.01). The scale was able to differentiate HRQoL of subjects with different co-morbidities that were expected to be different and to discriminate between subjects with scoring in the 1st and 4th interquartil intervals of the total scale; 34.1 versus 88.8, p<0.001.
Conclusions. The Cervantes Scale showed appropriate psychometric properties of feasibility, internal consistency and validity to explore HRQL of post-menopausal elderly women older than 64 years of age.