The association between exacerbation of chronic obstructive pulmonary disease and timing of paracetamol use: a cohort study in elderly Australians

Table 3 Covariate estimates from WCE survival model

Variable	Comparison	Adjusted hazard ratio (95% CI)	p-value
Age at cohort entry	Every 1 year increase	1.03 (1.01, 1.03)	< 0.001
Sex	Female vs. male	0.75 (0.63, 0.88)	0.0005
Statin use during follow-up	Any use vs. no use	0.83 (0.71, 0.99)	0.04
Hypertension^a	Yes vs. no	0.80 (0.67, 0.94)	0.02
Congestive heart failure^a	Yes vs. no	1.27 (1.05, 1.53)	0.07
Diabetes^a	Yes vs. no	0.89 (0.69, 1.16)	0.23
Rx-risk co-morbidity score^a,b	Every extra co-morbidity	1.06 (1.02, 1.09)	0.003

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