Table 2.

Hazard ratio (HR, 95% confidence intervals (CIs)) for ICS use and severe exacerbation associated with MVPA initiation among COPD patients.

	Number of events	Incidence rate per 100 person-year	HR (95% CI)
ICS use
Control	834	5.7	Reference
MVPA initiation	226	4.7	0.83 (0.72, 0.97)
Severe exacerbation (N = 5,458)
Control	640	4.9	Reference
MVPA initiation	172	3.9	0.81 (0.68, 0.96)

MVPA, moderate-to-vigorous physical activity; COPD, chronic obstructive pulmonary disease; ICS, inhaled corticosteroids.