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. Author manuscript; available in PMC: 2024 Aug 1.
Published in final edited form as: J Asthma. 2023 Feb 2;60(8):1601–1607. doi: 10.1080/02770903.2023.2165445

Table 3.

Estimated differences in average weekly all-cause emergency department (ED) visits and asthma ED visits during three pandemic surveillance periods and three corresponding comparison surveillance periods using data from the National Syndromic Surveillance Program, December 2018–March 2022

2020 pandemic surveillance period vs. comparison surveillance period 2021 pandemic surveillance period vs. comparison surveillance period 2022 pandemic surveillance period vs. comparison surveillance period

No. (% change) No. (% change) No. (% change)
All-cause ED visits
   Total 357 166 (−23.8) 110 332 (−7.4) 174 947 (−11.8)
Asthma ED visits
   Total 13 902 (−30.7) 8 805 (−19.6) 11 119 (−26.1)
   Age, in years
    0–4 2658 (−74.2) 1106 (−31.4) 1152 (−35.7)
    5–11 3216 (−66.2) 1770 (−36.5) 1931 (−41.0)
    12–17 1468 (−47.3) 838 (−27.2) 945 (−32.1)
    18–44 3564 (−18.8) 2748 (−14.7) 3732 (−21.6)
    45–64 1985 (−20.3) 1747 (−18.0) 2518 (−26.1)
    65+ 1012 (−20.4) 596 (−12.1) 841 (−17.6)
   Sexa
    Female 7706 (−28.1) 5206 (−19.1) 6767 (−25.9)
    Male 6177 (−34.8) 3589 (−20.5) 4340 (−26.4)
a

For each of the surveillance period comparisons, the sums of the sex-specific values do not equal the asthma ED visit total values because ED visits reported with missing patient sex information are excluded from the sex-specific averages, but included in the total averages.