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COVID-19 Infection risk posed by drinking alcohol at restaurants or bars in Japan

Kurita, J.; Sugawara, T.; Ohkusa, Y.

2021-08-01 public and global health
10.1101/2021.07.29.21261358 medRxiv
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BackgroundOn April 25, 2021, the third state of emergency was declared in Japan. Drinking alcohol at restaurants and bars was banned. ObjectWe used published data to evaluate drinking ban effects. MethodWe bootstrapped the data and evaluated the risk ratio for drinking compared with non-drinking during group dining with similar frequency and numbers of participants. ResultsThe 99% lower bound of the bootstrapped distribution of the risk ratio was less than one. Therefore the null hypothesis, that incidence in the two styles of group dining were the same, cannot be rejected. Discussion and ConclusionResults constitute no clear evidence indicating a risk of drinking alcohol in groups. However, further analyses using collected data are necessary. Moreover, risks posed by the number of group diners or their dining frequency must be evaluated.

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