Table 4– Incidence rate ratio (IRR) and hazard ratio (HR) of pulmonary thromboembolism events by follow-up years

Follow-up	Nonasthmatic cohort			Asthma cohort			IRR (95% CI)	Adjusted HR^¶ (95% CI)
	Pulmonary embolism	Person-years	Rate^#	Pulmonary embolism	Person-years	Rate^#
≤5 years	18	560 371	3.21	16	140 209	11.4	3.55 (3.40–3.71)***	3.38 (1.70–6.74)***
>5 years	5	183 003	2.73	3	45 973	6.53	2.39 (2.26–2.53)***	2.43 (0.57–10.4)

Data are presented as n, unless otherwise stated.^#: incidence rate per 100 000 person-years; ^¶: multivariable analysis including age, sex and comorbidities. ***: p<0.001.