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Fig. 1 | Respiratory Research

Fig. 1

From: Impact of preexisting interstitial lung disease on mortality in COVID-19 patients from the early pandemic to the delta variant epidemic: a nationwide population-based study

Fig. 1

Proportion of COVID-19 patients with preexisting interstitial lung disease by wave. Among total COVID-19 patients in each wave, the proportion of COVID-19 patients with preexisting interstitial lung disease was 1.2% (4387/365,929), 0.8% (1673/196,957) and 0.3% (1273/374,872), in the wild-type-, alpha-, and delta-predominant wave, respectively. Wild-type-predominant wave, January 01, 2020–April 18, 2021; alpha-predominant wave, April 19, 2021–July 18, 2021; delta-predominant wave, July 19, 2021–August 31, 2021

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Respiratory Research

ISSN: 1465-993X

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