Table2 The calculation results of model parameters and import time nodes.

From: A mathematical-adapted model to analyze the characteristics for the mortality of COVID-19

Group

Model parameter

The important time nodes in the model

K

t0

\(\Lambda\)

t1

t2

t3

t4

t5

t6

Age groups

Male

 

71.67

0.15

5.85

38.38

43.28

69.55

67.45

86.59

89.72

Female

 

75.29

0.73

5.45

39.07

44.37

73.25

71.10

92.78

96.36

Time nodes groups

Male

SH

5.81

0.04

1.17

0.30

0.50

1.17

4.29

14.89

17.77

HD

14.89

0.08

1.32

1.00

1.65

5.18

11.36

34.27

40.11

SD

20.66

0.09

1.52

1.93

3.02

10.30

16.33

42.62

48.86

Female

SH

6.24

0.05

1.16

0.32

0.54

1.19

4.60

16.12

19.28

HD

16.28

0.08

1.33

1.11

1.83

5.80

12.44

37.23

43.53

SD

22.07

0.11

1.6

2.33

3.56

12.08

17.67

43.93

50.02

  1. SH: the length of the symptom time to hospitalization date; HD: the length of the hospitalization date to death time; SD: the length of the symptom time to death time. t0: the location parameter; k: the shape parameter; λ: the scale parameter. t1 = T.lower 97.5% CI, t2 = T.lower 95% CI, t3 = T.peak, t4 = T.median, t5 = T.upper 95% CI and t6 = T.upper 97.5% CI.