ATS American Thoracic Society
Recent Abstracts

Pulmonary Functional Status & Dyspnea Questionnaire-Modified Version PFSDQ-M


SC Lareau, P M Meek


Suzanne C. Lareau (111-A)
New Mexico VA Health Care System
1501 San Pedro Dr. SE
Albuquerque, N.M. 87108


Telephone / Fax

Tel: (505) 265-1711 ext 4508
FAX: (505) 256-5751

Cost & availability

No cost, contact S Lareau



Time to complete

7 minutes first testing, 6 minutes on repeat testing

Number of items


Domains & categories (#)

3 Domains

Name of domains & categories

domains (functional status, dyspnea and fatigue)

Scaling of items

modified Likert 0 to 10 scale with verbal descriptors


Total scores of items on each domain (activity, dyspnea, and fatigue), mean scores for each domain (the total score divided by number of items rated), and individual scores for five general dyspnea scores. Higher scores indicate worse functional status or symptoms.


a. Test-retest: two weeks apart, Reported
b. Internal consistency: Reported1.


a. Content: Reported1,
b. Construct: Reported1
Convergent: Reported1
Discriminant: activity and dyspnea scores discriminated between those losing rapid versus slow loss of lung function. Reported1
c. Criterion:
Concurrent Activity domain with FEV1% r = - 0.38, p<.05; FVC% r= - 0.42, p<.05; dyspnea domain with FVC% r= - 0.49, p<.05; and fatigue domain with FVC% r= - 0.38, p<.05. Dyspnea general questions with CRQ r= -0.60, p<.01; and SF36 physical r= -0.52, p <.01.


PFSDQ-M discriminated between groups losing rapid (FEV! % pred > 50 ml/yr) versus less rapid (FEV! % pred ≤ 50 ml/yr) of lung function.1

Minimally important difference

not reported

Research Use

Yes4, v

Clinical Use

Enter Content Here

Clinical Use

Yes, most commonly as an outcome measure in pulmonary rehabilitation programs.


Original English (US), translated in five languages

Reading Level

Flesch-Kincaid grade level of 6.8 and Flesch Reading Ease 69.5.



Date of information

July 2003

Copyright © 2007 American Thoracic Society · Web Site Requirements
Questions or comments? Contact Us.