Fig. 2.

Different characteristics between the front line and the second line. 2–1 More healthcare workers in front line had increased workload than the second line. 2–2 The proportion of respiratory symptoms among participants working in front line is higher than that of second line. 2–3 The proportion of digestive symptoms among participants working in front line is higher than that of second line. 2–4 A higher proportion of healthcare workers on the front line did specific test(s) related to COVID-19. 2–5 There was no significant difference in coping styles between the front line and the second line. 2–6 There was no significant difference in job burnout between the front line and the second line