Table 4.
—COPD Severity Score and the Risk of Functional Limitations
| Functional Limitation Measure | Entire Cohort (N = 1,202) | GOLD Stage < II (n = 460) | GOLD Stage ≥ II (n = 742) |
| Self-reported functional limitationa | 1.60 (1.48-1.73) | 1.56 (1.36-1.78) | 1.63 (1.48-1.80) |
| Limitation in moderate activitiesb | 1.64 (1.52-1.78) | 1.75 (1.50-2.03) | 1.61 (1.46-1.77) |
| Limitation in climbing several flights of stairs | 1.68 (1.55-1.82) | 1.73 (1.50-2.00) | 1.63 (1.47-1.80) |
Values expressed as odds ratio (95% CI). All P < .0001. Logistic regression analysis controlling for age, sex, race, and educational attainment. See Table 1 for expansion of abbreviations.
a
“Unable to do” or “severe limitation” in a battery of basic physical activities (see “Materials and Methods” section).
b
Health limits “a lot” in performing moderate activities, such as moving a table, pushing a vacuum cleaner, bowling, or playing golf.