Pulmonary Functional Status & Dyspnea Questionnaire-Modified Version PFSDQ-M
SC Lareau, P M Meek
Suzanne C. Lareau (111-A)
Telephone / Fax
Tel: (505) 265-1711 ext 4508
Cost & availability
No cost, contact S Lareau
Time to complete
7 minutes first testing, 6 minutes on repeat testing
Number of items
Domains & categories (#)
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
Validitya. Content: Reported1,
b. Construct: Reported1
Discriminant: activity and dyspnea scores discriminated between those losing rapid versus slow loss of lung function. Reported1
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
Enter Content Here
Yes, most commonly as an outcome measure in pulmonary rehabilitation programs.
Original English (US), translated in five languages
Flesch-Kincaid grade level of 6.8 and Flesch Reading Ease 69.5.
Date of information