Comparison of the variability of the annual rates of change in FEV1 determined from serial measurements of the pre- versus post-bronchodilator FEV1 over 5 years in mild to moderate COPD: Results of the lung health study

Table 3 Proportion of participants (95% CI) in each intervention group with a statistically significant individual annual rate of change in pre- versus post-bronchodilator FEV ₁ from annual visit 1 through 5

Intervention Group	Proportion with significant change in FEV₁(95% CI)
	Pre-bronchodilator FEV₁	Post-bronchodilator FEV₁
UC	40.1 (37.6-42.6)	38.7 (36.2-41.2)
SIP	27.8 (25.6-30.1)	30.5 (28.1-32.8)
SIA	27.0 (24.7-29.2)	25.4 (23.3-27.6)

ISSN: 1465-993X