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Table 1 Summary statistics of epidemic characteristic parameters estimated by the ETM, SRM, and MCM from 2012/2013 to 2017/2018

From: A maximum curvature method for estimating epidemic onset of seasonal influenza in Japan

Parameters

Methods

2012/2013

2013/2014

2014/2015

2015/2016

2016/2017

2017/2018

Mean

Onseta (weeks)

ETM

16.4

17.0

13.9

19.3

12.2

12.6

15.2

SRM

18.9

19.2

15.8

20.6

17.9

17.1

18.2

MCM

16.0

17.0

13.2

18.5

12.7

12.4

15.0

End (weeks)

ETM

38.7

37.7

36.5

37.6

37.7

34.3

37.1

SRM

29.4

34.6

26.5

34.4

30.1

29.4

30.7

MCM

34.3

37.5

32.4

38.1

36.3

34.1

35.5

Duration (weeks)

ETM

23.0

21.8

23.5

19.1

26.3

22.6

22.7

SRM

11.5

16.3

11.7

14.8

13.3

13.3

13.5

MCM

19.3

21.6

20.2

20.6

24.6

22.7

21.5

Onset intensityb

ETM

1

1

1

1

1

1

1

SRM

4.25

3.90

5.08

3.30

7.95

9.87

5.72

MCM

0.70

0.87

0.50

0.61

1.13

0.84

0.78

Ending intensity

ETM

1

1

1

1

1

1

1

SRM

7.39

4.04

8.74

5.13

8.05

8.06

6.90

MCM

1.99

1.07

1.96

0.66

1.67

1.01

1.40

Dominant subtypec

A(H3)

A(H1N1)pdm09

A(H3)

A(H1N1)pdm09

A(H3)

B/Yamagata

–

  1. aEpidemic onset and end are weeks since week 34 of each year
  2. bEpidemic onset and ending intensities represent the weekly number of ILI cases per sentinel at epidemic onset and end, respectively
  3. cInformation on dominant subtype for each influenza season are from [45,46,47,48,49,50]