Quebec Sleep Questionnaire (QSQ)

Name of Questionnaire

Quebec Sleep Questionnaire (QSQ)

Description

A disease-specific health-related quality of life instrument designed for use with adults to assess the effect of obstructive sleep apnea on quality of life. It was designed to be used as a clinical outcome measure for clinical trials.

Developer

Y Lacasse, M-P Bureau, F Sériès

Address

Dr. Y Lacasse
Centre de Pneumologie
Hôpital Laval
2725 Chemin Ste-Foy
Ste-Foy, P. Quebec G1V 4G5 CANADA

E-mail

Yves.Lacasse@med.ulaval.ca

Administration

insert here

Time to complete

Not specified

Number of items

32

Domains & categories

5 domains

Name of categories/domains

Hypersomnolence, Diurnal symptoms, Nocturnal symptoms, Emotions, Social interactions

Scaling of items

7 point Likert scale

Scoring

Mean score per item within each domain with equal weighting

Reliability

Validity

Established by comparing to scores for symptom measures (Epworth Sleepiness scale, Beck Depression Inventory, Symptom Checklist-90 depression and hostility domains, Functional Outcomes in Sleep Questionnaire), a generic HRQL measure (SF-36), and a global rating of change in their OSA related symptoms, daily life activities, social interactions and emotions after therapy ¹

Responsiveness

Reported. ¹

Minimally important difference

Reported. ¹

Research use

Yes

Clinical use

Not reported

Language

Original: English ( Canada )

References

1. Lacasse Y, M-P Bureau, F Sériès. A new standardized and self-administered quality of life questionnaire specific to obstructive sleep apnoea. Horax 2004; 59:494-499.
2. Flemons WW. Measuring quality of life in patients with sleep apnoea: whose life is it anyway? Thorax 2004; 59:457-458.

Date of information

August 2004