Unadjusted modified Poisson regression assessing acute healthcare utilization within 30 days of a COVID-19 infection, or randomly assigned date1 for periods without history of infection.

Unadjusted modified Poisson regression assessing acute healthcare utilization within 30 days of a COVID-19 infection, or randomly assigned date1 for periods without history of infection.未校正的改良泊松回归模型，用于评估新冠病毒（COVID-19）感染后30天内的急性医疗服务利用情况，或为无感染史的时间段随机分配日期1（date1）。