Comparison of two quality of life instruments for cancer patients: the Ferrans and Powers Quality of Life Index and the European Organisation for the Research and Treatment of Cancer Quality of Life Questionnaire C30.

Comparison of two quality of life instruments for cancer patients: the Ferrans and Powers Quality of Life Index and the European Organisation for the Research and Treatment of Cancer Quality of Life Questionnaire C30. J Soc Integr Oncol. 2008;6(1):13-8 Authors: Gupta D, Grutsch JF, Lis CG Abstract Health-related quality of life (QoL) in cancer patients cannot be adequately captured with a single instrument. We compared the European Organisation for the Research and Treatment of Cancer Quality of Life Questionnaire (QLQ-C30) and the Ferrans and Powers Quality of Life Index (QLI). We hypothesized that there would be little overlap among their subscales. Baseline QoL data were collected from a consecutive series of 954 cancer patients treated at our center. Data from the two questionnaires were analyzed on a subscale basis using correlation analysis and the Bland-Altman method. The mean and standard deviations of the difference in QoL subscale scores were used to construct 95% limits of agreement among the subscales. Five hundred seventy-nine were females and 375 were males, with a median age of 52 years. There were poor to modest correlations and poor agreement among the subscales of the two instruments. For QLQ-C30 physical and QLI health, the correlation and limits of agreement were 0.6 and -22.2 to 59.8. For QLQ-C30 role and QLI health, the correlation and limits of agreement were 0.6 and -47.3 to 61.5. For QLQ-C30 social and QLI so...
Source: Journal of the Society for Integrative Oncology - Category: Cancer & Oncology Tags: J Soc Integr Oncol Source Type: research