Table 3.
Relationship of clinical respiratory illness with ST‐elevation myocardial infarction by study seasons.
| Clinical respiratory illness status | Total | NSTEMI n (%) | STEMI n (%) | RRa (95% CI) | aRRb (95% CI) |
|---|---|---|---|---|---|
| All seasons | |||||
| No | 660 | 93 (14.1) | 567 (85.9) | Ref. | Ref. |
| Yes | 84 | 12 (14.3) | 72 (85.7) | 0.99 (0.91–1.09) | 1.03 (0.87–1.22) |
| 2017 influenza season | |||||
| No | 36 | 12 (33.3) | 24 (66.7) | Ref. | Ref. |
| Yes | 20 | 6 (30.0) | 14 (70.0) | 1.05 (0.73–1.52) | 1.03 (0.60–1.75) |
| During 2017/2018 non‐influenza season | |||||
| No | 183 | 38 (20.8) | 145 (79.2) | Ref. | Ref. |
| Yes | 27 | 3 (11.1) | 24 (88.9) | 1.12 (0.96–1.31) | 1.05 (0.82–1.34) |
| During 2018 influenza season | |||||
| No | 441 | 43 (9.8) | 398 (90.2) | Ref. | Ref. |
| Yes | 37 | 3 (8.1) | 34 (91.9) | 1.02 (0.92–1.13) | 1.01 (0.87–1.19) |
| During all influenza seasons c | |||||
| No | 477 | 55 (11.5) | 422 (88.5) | Ref. | Ref. |
| Yes | 57 | 9 (15.8) | 48 (84.2) | 0.95 (0.85–1.06) | 0.92 (0.29–2.87) |
Abbreviations: aRR, adjusted relative risk; BMI, body mass index; CI, confidence interval; CVD, cardiovascular disease; NSTEMI, non‐ST‐segment elevation myocardial infarction; RR, relative risk; STEMI, ST‐segment elevation myocardial infarction.
a
RR: unadjusted relative risk.
b
aRR: adjusted relative risk; adjusted for age, sex, tobacco use, hypertension, diabetes, high blood cholesterol, heart failure, exercise level, previous history of CHD, family history of CVD and BMI.
c
Includes both annual influenza seasons of 2017 and 2018.