Health and Quality of Life Outcomes

Table 5 Correlations between SOBDA week 1 and FEV ₁ % predicted, mMRC, 6-MWT, and COPD health status

From: Item selection, reliability and validity of the Shortness of Breath with Daily Activities (SOBDA) questionnaire: a new outcome measure for evaluating dyspnea in chronic obstructive pulmonary disease

SOBDA	n	Total score
FEV₁% predicted^a,b	(n = 290)	–0.23*
mMRC^a
Patient^d	(n = 292)	0.46*
Clinician^d	(n = 292)	0.44*
6-MWT^a,c
Pre-MBD^d	(n = 74)	0.62*
Post-MBD^d	(n = 74)	0.58*
Borg RPE^d	(n = 74)	0.63*
Distance^b	(n = 74)	–0.46*
COPD health status^a
SGRQ-C total^d	(n = 287)	0.73*
SGRQ-C symptom	(n = 290)	0.53*
SGRQ-C activity	(n = 290)	0.73*
SGRQ-C impact	(n = 288)	0.62*
CRQ-SAS dyspnea^d	(n = 291)	–0.76*

^aMeasured as Visit 1.
^bPearson's correlation.
^c6-MWTs were done at a subset of sites.
^dSpearman's rank-order correlation.
*p < 0.0001.
6-MWT 6-Minute Walk Test.
COPD Chronic obstructive pulmonary disease.
CRQ-SAS Chronic Respiratory Questionnaire Self-Administered Standardised.
FEV ₁ Forced expiratory volume in 1 second.
MBD Modified Borg Dyspnea Scale.
mMRC Modified Medical Research Council.
RPE Rating of Perceived Exertion Scale.
SGRQ-C St. George’s Respiratory Disease Questionnaire for COPD Patients.

Back to article page

ISSN: 1477-7525

Contact us

Submission enquiries: journalsubmissions@springernature.com