Table 1. Descriptive statistics of individuals ≥ 40 years old with first myocardial infarction or stroke and at least one respiratory infection, Denmark, 1 January 2010–31 December 2016 (n = 1,350).

Characteristics	Myocardial infarction		Stroke
	n	%	n	%
Sex
Female	253	41.7	347	46.6
Age group in years at first cardiovascular event
40–49	40	6.6	35	4.7
50–59	95	15.7	91	12.2
60–69	156	25.7	211	28.4
70–79	175	28.9	216	29.0
80–89	121	20.0	152	20.4
≥ 90	19	3.1	39	5.2
Total	606	100	744	100
Stratified age in years at first cardiovascular event
40–64	210	34.7	214	28.8
≥ 65	396	65.3	530	71.2
Total	606	100	744	100
Mortality
Mortality ≤ 30 days after cardiovascular event	51	8.4	88	11.8
Mortality during study period	242	39.9	336	45.2
Total	606	100	744	100
Laboratory-confirmed respiratory infection episodesa,b
Streptococcus pneumoniae	222	35.4	332	43.3
Respiratory virusc	406	64.6	434	56.7
Total	628	100	766	100

^a Myocardial infarction individuals and multiple samples: one individual has four viral samples, one individual has three viral samples and 12 individuals have two viral samples. Five individuals have two bacterial samples.

^b Stroke individuals and multiple samples: three individuals have three viral samples, six individuals have two viral samples. One individual has three bacterial samples and eight individuals have two bacterial samples.

^c Human metapneumovirus, influenza virus, parainfluenza virus, respiratory syncytial virus, or rhinovirus.