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The Clinical and Psychometric Validation of a Questionnaire to Assess the Quality of Life of Adult Patients Treated With Long‐Term Parenteral Nutrition
Author(s) -
Baxter Janet P.,
Fayers Peter M.,
McKinlay Alastair W.
Publication year - 2010
Publication title -
journal of parenteral and enteral nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.935
H-Index - 98
eISSN - 1941-2444
pISSN - 0148-6071
DOI - 10.1177/0148607109348612
Subject(s) - debriefing , medicine , quality of life (healthcare) , face validity , parenteral nutrition , reliability (semiconductor) , psychometrics , content validity , intestinal failure , physical therapy , validity , intensive care medicine , clinical psychology , nursing , power (physics) , physics , quantum mechanics , medical education
Background: Home parenteral nutrition (HPN) is an established treatment for the management of patients with chronic intestinal failure. No quality‐of‐life assessment tools have been developed and validated specifically for this patient population, and previous studies have used generic instruments or techniques not validated in HPN. The assessment of quality of life (QOL) should produce clinically relevant data reflecting patients' issues. The HPN‐QOL was designed to assess the QOL of HPN patients. The purpose of this study was to test the hypothesized scale structure of the questionnaire with regard to reliability and validity in a sample of patients. Methods: A provisional questionnaire was prepared following recognized guidelines and then subjected to field testing. The questionnaire was administered to 100 adult patients receiving HPN. Psychometric tests examined the reliability and validity of the questionnaire, and patients' debriefing comments were analyzed. Results: The provisional questionnaire was adapted using evidence from quantitative and qualitative analysis. Multitrait scaling analysis and face validity refined the questionnaire to 48 items. Compliance rates were high, and the questionnaire was well accepted. Conclusions: A method of objectively assessing the QOL of patients treated with HPN has been developed. The HPN‐QOL has been rigorously prepared and demonstrates psychometric and clinical validity to assess the QOL of long‐term HPN patients.