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Table 2 IMV and ECMO incidence and risk-adjusted mortality in COVID-19 patients in 47 Japanese prefectures

From: Association between regional critical care capacity and the incidence of invasive mechanical ventilation for coronavirus disease 2019: a population-based cohort study

Prefectures

Number of COVID-19 patients, n

Number of IMV patients, n

Number of ECMO patients, n

Mortality of COVID-19 with IMV, n

Incidence of IMV, per 100,000 COVID-19 patients

Incidence of ECMO, per 100,000 COVID-19 patients

Risk-adjusted mortality of IMV patients, %

Overall

33189809

12203

1426

2706

36.8

4.3

22.2

Hokkaido

1320084

394

50

81

53.2

6.8

21.3

Aomori

276472

32

17

5

14.6

7.7

18.5

Iwate

234363

3

1

1

1.3

0.4

33.6

Miyagi

537709

115

17

22

21.4

3.2

18.2

Akita

199402

25

4

14

12.5

2.0

54.9

Yamagata

221470

27

7

9

17.7

4.6

32.9

Fukushima

402079

47

11

13

14.4

3.4

29.0

Ibaraki

637659

126

28

26

23.4

5.2

21.4

Tochigi

414530

224

35

32

54.0

8.4

16.0

Gumma

437463

171

31

30

39.1

7.1

18.7

Saitama

1804519

671

105

169

39.4

6.2

26.3

Chiba

1444324

677

139

164

54.2

11.1

25.4

Tokyo

4317391

1840

224

469

49.6

6.0

26.0

Kanagawa

2173335

700

128

193

34.3

6.3

27.4

Niigata

455803

62

3

9

18.1

0.9

14.8

Toyama

234869

47

5

12

30.0

3.2

24.8

Ishikawa

278895

83

8

20

40.7

3.9

23.0

Fukui

200593

80

3

12

39.9

1.5

14.6

Yamanashi

191124

24

11

11

12.6

5.8

41.9

Nagano

459377

43

4

7

11.0

1.0

16.6

Gifu

537974

103

14

15

22.1

3.0

17.6

Shizuoka

857104

72

2

13

9.0

0.3

18.4

Aichi

2109638

421

67

111

21.7

3.4

26.9

Mie

460378

77

5

22

19.4

1.3

32.8

Shiga

373039

124

19

32

42.7

6.5

25.3

Kyoto

670867

500

65

86

74.5

9.7

16.8

Osaka

2783907

3008

192

560

124.4

7.9

17.5

Hyogo

1438949

666

35

196

59.6

3.1

28.6

Nara

339170

143

14

23

51.5

5.0

15.3

Wakayama

234436

28

3

7

11.9

1.3

21.9

Tottori

140333

20

0

1

14.3

0.0

5.4

Shimane

168610

12

1

4

7.9

0.7

40.1

Okayama

488069

265

8

41

68.0

2.1

15.9

Hiroshima

806496

136

18

34

18.7

2.5

28.5

Yamaguchi

313686

58

7

10

18.5

2.2

18.4

Tokushima

166702

98

3

12

58.8

1.8

12.5

Kagawa

252309

13

0

3

5.2

0.0

23.2

Ehime

315245

25

3

6

9.1

1.1

25.7

Kochi

167800

20

2

9

13.4

1.3

40.0

Fukuoka

1560629

320

86

80

25.2

6.8

28.8

Saga

259106

18

2

7

6.9

0.8

40.5

Nagasaki

331994

27

2

2

9.9

0.7

7.4

Kumamoto

531201

130

2

26

27.6

0.4

21.2

Oita

302416

30

3

10

10.9

1.1

30.4

Miyazaki

319954

65

2

11

20.3

0.6

16.6

Kagoshima

439967

75

10

22

38.4

5.1

26.6

Okinawa

578369

358

30

64

66.7

5.6

17.4

  1. Mortality was adjusted for 5-year age category, sex, body mass index category, and outbreaks of COVID-19
  2. COVID-19, coronavirus disease 2019
  3. IMV invasive mechanical ventilation; ECMO extracorporeal membrane oxygenation