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Table 2 Overall incidence rate of severe disease and incidence rate by frailty status

From: The association between frailty and severe disease among COVID-19 patients aged over 60 years in China: a prospective cohort study

 

Number of severe disease

Total person-days

Events per 100 person-days (95% CI)

Total (n = 114)

34 (29.82)

2908

1.48 (1.10–1.99)

Non-frail (n = 39)

4 (10.28)

1265

0.32 (0.12–0.84)

Pre-frail (n = 39)

15 (38.46)

879

1.71 (1.03–2.83)

Frail (n = 36)

24 (66.67)

643

3.73 (2.50–5.57)

  1. CI confidence interval