Table 2. Influenza and pneumococcal vaccination rate and odds ratio in patients with COPD (total n=250).

Variable	Vaccination rate (%)	Severe exacerbations, at least 1, n=59
		OR	95% CI
Influenza vaccination (n=59)		2.11	0.88–5.02
GOLD I–II (n=101)	21.62	–	–
GOLD III–IV (n=149)	25.71	–	–
Pneumococcal vaccination (n=27)		1.06	0.84–1.34
GOLD I–II (n=101)	10.23	–	–
GOLD III–IV (n=149)	11.44	–	–

COPD, chronic obstructive pulmonary disease; GOLD, Global Initiative for Chronic Obstructive Lung Disease; OR, odds ratio; CI, confidence interval.