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Table 1 Clinical characteristics of patients before and after the COVID-19 pandemic

From: Impact of the COVID-19 pandemic on prehospital and in-hospital treatment and outcomes of patients after out-of-hospital cardiac arrest: a Japanese multicenter cohort study

Variable

Pre-pandemic

(n = 2015)

Post-pandemic

(n = 5023)

p-value

Age, years

72

(62–84)

76

(62–84)

0.09

Male

1236/2014

(61.4)

3095/5023

(61.6)

0.85

Body mass index, kg/m2

21.8

(19.1–25.0)

21.8

(18.8–25.4)

0.61

Medical history

     

 Hypertension

154/1945

(7.9)

332/4885

(6.8)

0.10

 Diabetes

104/1941

(5.4)

187/4883

(3.8)

0.01

 Ischemic heart disease

65/1938

(3.4)

100/4883

(2.0)

< 0.01

 Cerebrovascular disease

54/1939

(2.8)

111/4886

(2.3)

0.21

 Heart failure

53/1932

(2.7)

92/4781

(1.9)

0.03

 Renal disease

49/1941

(2.5)

86/4889

(1.8)

0.04

 Mental disease

35/1944

(1.8)

65/4890

(1.3)

0.14

 Lung disease

30/1940

(1.5)

72/4887

(1.5)

0.82

 Hemodialysis

24/1948

(1.2)

33/4899

(0.7)

0.02

 Malignant disease

17/1940

(0.9)

46/4891

(0.9)

0.80

 Liver disease

13/1940

(0.7)

27/4890

(0.6)

0.57

 Digestive disease

12/1938

(0.6)

18/4883

(0.4)

0.16

Baseline ADL

    

< 0.01

 Good ability

831/1406

(59.1)

1958/3669

(53.4)

 

 Mild disability

384/1406

(27.3)

1162/3669

(31.7)

 

 Severe disability

127/1406

(9.0)

322/3669

(8.8)

 

 Vegetative state

64/1406

(4.6)

227/3669

(6.2)

 

Location

    

< 0.01

 Home

1301/1996

(65.2)

3164/4673

(67.7)

 

 Public place

416/1996

(20.8)

807/4673

(17.3)

 

 Health care facilities

173/1996

(8.7)

470/4673

(10.0)

 

 Medical institutions

26/1996

(1.3)

49/4673

(1.0)

 

 Others

80/1996

(4.0)

183/4673

(3.9)

 

Cause of cardiac arrest

     

 Cardiac etiology

1206/2015

(59.9)

3094/5023

(61.6)

0.18

 Acute coronary syndrome

161/1197

(13.5)

290/3047

(9.3)

< 0.01

 Noncardiac etiology

809/2015

(40.1)

1929/5023

(38.4)

0.16

  Stroke

75/797

(9.5)

144/1895

(7.6)

 

  Respiratory disease

85/797

(10.7)

244/1895

(12.9)

 

  Malignancy

36/797

(4.5)

137/1895

(7.2)

 

  Exogenous cause

398/797

(49.9)

886/1895

(46.8)

< 0.01

   Traffic accident

52/399

(13.0)

94/892

(10.5)

 

   Fall

62/399

(15.5)

171/892

(19.2)

 

   Hanging

70/399

(17.5)

203/892

(22.8)

 

   Drowning

44/399

(11.0)

103/892

(11.5)

 

   Asphyxia

124/399

(31.1)

225/892

(25.2)

 

   Addiction

14/399

(3.5)

10/892

(1.1)

 

 SIDS

11/2105

(0.5)

7/5023

(0.1)

< 0.01

  1. Data are shown as the number of positive observations/total number of observations (%) or as median (interquartile range). For each variable, the number of missing observations can be obtained as the difference between the total number of patients in each group and the total number of observations
  2. ADL, activities of daily living; SIDS, sudden infant death syndrome