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Health and Quality of Life Outcomes
Published in: Health and Quality of Life Outcomes 1/2017

Open Access 01-01-2017 | Research

Validation of the Italian version of the Laval questionnaire: health-related quality of life in subjects with obesity

Authors: Lorenzo Maria Donini, Aldo Rosano, Luca Di Lazzaro, Eleonora Poggiogalle, Carla Lubrano, Silvia Migliaccio, Mariagrazia Carbonelli, Alessandro Pinto, Andrea Lenzi

Published in: Health and Quality of Life Outcomes | Issue 1/2017

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Abstract

Background

Obesity is associated to increased risk of metabolic comorbidity as well as increased mortality. Notably, obesity is also associated to the impairment of the psychological status and of quality of life.
Only three questionnaires are available in the Italian language evaluating the health-related quality of life in subjects with obesity.
The aim of the present study was to test the validity and reliability of the Italian version of the Laval Questionnaire.

Methods

The original French version was translated into Italian and back-translated by a French native speaker. 273 subjects with obesity (Body Mass Index ≥ 30 kg/m2) were enrolled; the Italian version of the Laval Questionnaire and the O.R.Well-97 questionnaire were administered in order to assess health- related quality of life. The Laval questionnaire consists of 44 items distributed in 6 domains (symptoms, activity/mobility, personal hygiene/clothing, emotions, social interaction, sexual life). Disability and overall psychopathology levels were assessed through the TSD-OC test (SIO test for obesity correlated disabilities) and the SCL-90 (Symptom Checklist-90) questionnaire, respectively. To verify the validity of the Italian version, the analysis of internal consistency, test-retest reliability, and construct validity were performed.

Results

The observed proportion of agreement concordance of results was 50.2% with Cohen’s K = 0.336 (CI 95%: 0.267–0.404), indicating a fair agreement between the two tests.
Test-retest correlation was statistically significant (ρ = 0.82; p < 0.01); validity (standardized Chronbach’s alpha) was considered reliable (α > 0.70). The analysis of construct validity showed a statistically significant association in terms of both total score (ρ = −0.66) and scores at each single domain (p < 0.01). A high correlation (p < 0.01) was observed between Laval questionnaire total and single domain scores and other related measures (Body Mass Index, TSD-OC scores, SCL-90 global severity index), revealing a high construct validity of the test.

Conclusions

The Italian version of the Laval Questionnaire is a valid and reliable measure to assess the health-related quality of life in subjects with obesity.
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Metadata
Title
Validation of the Italian version of the Laval questionnaire: health-related quality of life in subjects with obesity
Authors
Lorenzo Maria Donini
Aldo Rosano
Luca Di Lazzaro
Eleonora Poggiogalle
Carla Lubrano
Silvia Migliaccio
Mariagrazia Carbonelli
Alessandro Pinto
Andrea Lenzi
Publication date
01-01-2017
Publisher
BioMed Central
Published in
Health and Quality of Life Outcomes / Issue 1/2017
Electronic ISSN: 1477-7525
DOI
https://doi.org/10.1186/s12955-017-0671-3

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