In multivariate regression models, 6MWT distance, self-report of being disabled, UCSD SOBQ total score, 6MWT Borg, age, and DLCO percent predicted were significant determinants of PCS score (model [R.sup.2] = 0.24) (Table 4).
In the final model (PCS score = [0.0042] x 6MWT distance + [-0.16] UCSD SOBQ total score + [-0.22] 6MWT Borg + [0.08] x age + [-0.05] x DLCO percent predicted + [-1.1] x [disabled]), the absolute values of the adjusted coefficients are low (Table 4).
George's Respiratory Questionnaire total score; TLC = total lung capacity; UCSD SOBQ = University of California, San Diego Shortness of Breath Questionnaire; VA = Department of Veterans Affairs.
The reliability and validity of the UCSD SOBQ was assessed in 54 individuals (32 male, 22 female) participating in pulmonary rehabilitation.
Validity was determined in the same group of subjects by comparing UCSD SOBQ scores to other measures.
This author was not able to find specific mention of the minimal detectable change in the UCSD SOBQ in the literature.
The responsiveness to change was determined by comparing changes in the UCSD SOBQ scores after pulmonary rehabilitation to changes in the Chronic Respiratory Questionnaire-Dyspnea (CRQ-Dyspnea) score and the Transitional Dyspnea Index (TDI).
The MCID has been determined by expert consensus and by calculating effect size, SEM, and comparing agreement between UCSD SOBQ and CRQ-Dyspnea and TDI.
To assess dyspnea during activities of daily living, the UCSD SOBQ can be used during an initial evaluation as a baseline measurement and during re-evaluations to detect change.