Table 2.
Rates per 100,000 member-weeks, rate ratios, and rate differences comparing acute myocardial infarction during the prepandemic and pandemic periods of 2020 with the same periods in 2019
| January 1–March 3, 2019 (n = 1308) | January 1–March 3, 2020 (n = 1271) | Rate ratio (95% CI) | Rate difference (95% CI) | March 20–July 31, 2019 (n = 2388) | March 20–July 31, 2020 (n = 2052) | Rate ratio (95% CI) | Rate difference (95% CI) | |
|---|---|---|---|---|---|---|---|---|
| Overall | 4.45 | 4.24 | 0.95 (0.88–1.03) | –0.21 (–0.55 to 0.13) | 3.76 | 3.20 | 0.85 (0.80–0.90) | –0.56 (–0.77 to –0.35) |
| Age group | ||||||||
| < 65 years | 1.99 | 1.69 | 0.85 (0.74– 0.97) | –0.30 (–0.55 to –0.05) | 1.70 | 1.42 | 0.83 (0.75–0.92) | –0.29 (–0.44 to –0.13) |
| ≥ 65 years | 14.51 | 14.29 | 0.98 (0.89–1.08) | –0.22 (–1.61 to 1.16) | 12.06 | 10.14 | 0.84 (0.78–0.91) | –1.92 (–2.75 to –1.10) |
| Gender | ||||||||
| Male | 6.02 | 5.64 | 0.94 (0.85–1.03) | –0.38 (–0.95 to 0.20) | 5.06 | 4.29 | 0.85 (0.79–0.91) | –0.77 (–1.12 to –0.42) |
| Female | 3.07 | 3.02 | 0.98 (0.86–1.12) | –0.05 (–0.44 to 0.33) | 2.63 | 2.27 | 0.86 (0.78–0.95) | –0.37 (–0.61 to –0.13) |
| Race/ethnicity | ||||||||
| White | 5.97 | 5.60 | 0.94 (0.84–1.05) | –0.37 (–1.02 to 0.29) | 4.98 | 4.53 | 0.91 (0.84–0.99) | –0.45 (–0.85 to –0.04) |
| Black | 5.95 | 5.56 | 0.93 (0.74–1.18) | –0.39 (–1.71 to 0.94) | 5.33 | 4.24 | 0.80 (0.67–0.95) | –1.09 (–1.91 to –0.26) |
| Hispanic | 3.07 | 2.87 | 0.94 (0.81–1.08) | –0.20 (–0.63 to 0.23) | 2.51 | 2.12 | 0.84 (0.75–0.94) | –0.39 (–0.65 to –0.13) |
| API | 3.71 | 4.22 | 1.14 (0.90–1.44) | 0.51 (–0.43 to 1.45) | 3.46 | 2.46 | 0.71 (0.59–0.86) | –1.00 (–1.55 to –0.44) |
| Other | 2.09 | 2.04 | 0.98 (0.24–3.90) | –0.05 (–2.91 to 2.81) | 2.18 | 1.68 | 0.77 (0.29–2.07) | –0.50 (–2.39 to 1.39) |
AMI, acute myocardial infarction; API = Asian/Pacific Islander; CI = confidence interval.