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Table 3 Factors affecting the severity of COVID-19 among 2126 local cases using Logistic regression model

From: Epidemiological features of COVID-19 patients with prolonged incubation period and its implications for controlling the epidemics in China

Factors

N

Univariate analysis

Multivariate analysis#

EXP(β) (95%CI)

P-value

EXP(β) (95%CI)

P-value

Incubation

 Normal

1893

1

1

 Prolonged

233

0.461 (0.247, 0.790)

0.009

0.386 (0.203, 0.677)

0.002

Sex

 Female

1071

1

  

 Male

1055

1.058 (0.804, 1.393)

0.689

  

Age, year

 0–45

992

1

1

 46–60

670

1.615 (1.098, 2.380)

0.015

1.380 (0.927, 2.054)

0.112

 > 60

464

5.857 (4.169, 8.324)

< 0.001

4.482 (3.074, 6.584)

< 0.001

Occupation

 Manual workera

174

1

No significant and excluded

 Farmer

426

4.852 (2.338, 11.802)

< 0.001

 Office worker

398

1.805 (0.816, 4.566)

0.172

 Public service worker

354

2.453 (1.125, 6.149)

0.036

 Unemployed

774

3.060 (1.492, 7.389)

0.005

Geographical Location

 Northern

617

1

1

 Central

946

0.630 (0.463, 0.859)

0.003

0.644 (0.465, 0.894)

0.008

 Southern

563

0.490 (0.333, 0.712)

< 0.001

0.561 (0.374, 0.832)

0.005

Type of residence

 Urban area

1291

1

  

 Rural area

835

1.212 (0.916, 1.598)

0.175

  

Underlying disease

 None

1542

1

1

 Cardia-cerebrovascular disease

305

2.562 (1.819, 3.574)

< 0.001

1.511 (1.041, 2.175)

0.028

 Diabetes

101

2.457 (1.492, 3.967)

< 0.001

2.155 (1.288, 3.538)

0.003

 Other disease

300

2.060 (1.457, 2.877)

< 0.001

1.605 (1.114, 2.283)

0.010

  1. #Factors with P-value greater than 0.1 in univariate analysis were excluded in the multivariate analysis
  2. aManual worker contains construction worker, factory worker, cleaner, etc.