Table 3 Demographic data and risk factors of 91 COVID-19 home-isolated patients according to the onset of positivity of SARS-CoV-2 anti-NP

Age categories(years)

 30

7

58.3

1

8.3

4

33.3

12

0.002*

 30–59

47

73.4

15

23.5

2

3.1

64

 60+

15

100

0

0.0

0

0.0

15

Sex

 Male

31

83.8

3

8.1

3

8.1

37

0.158

 Female

38

70.3

13

24.1

3

5.6

54

Occupation

 Not working

26

74.3

8

22.9

1

2.9

35

0.036*

 Healthcare workers

25

80.6

6

19.4

0

0.0

31

 Non-healthcare workers

18

72

2

8

5

20

25

Symptoms

 Asymptomatic

1

33.3

0

0.0

2

66.7

3

1

 Symptomatic

68

77.3

16

18.2

6

4.5

88

Chronic diseases

 No

32

66.7

10

20.8

6

12.5

48

0.028*

 Yes

37

86

6

14

0

0

43

Smoking

 Non-smoker

51

73.9

14

20.3

4

5.8

69

0.46

 Smoker

18

81.8

2

9.1

2

9.1

22

Contact with confirmed case

 No

28

77.8

6

16.7

2

5.5

36

1

 Yes

41

74.5

10

18.2

4

7.3

55

Confirmed household

 No

55

78.6

11

15.7

4

5.7

70

0.41

 Yes

14

66.7

5

23.8

2

9.5

21

Chest scan

 Not done

7

63.6

2

18.2

2

18.2

11

0.813

 Normal

5

83.3

1

16.7

0

0

6

 Pneumonia

51

76.1

12

17.9

4

6

67

 Bronchitis

6

85.7

1

14.3

0

0

7

Hemoglobin level

 Anemic

25

86.2

4

13.8

0

0

29

0.19

 Non-anemic

44

71

12

19.4

6

9.6

62

WBC count

 Less than 4000

30

75

7

17.5

3

7.5

40

0.86

 Normal (4000–11,000)

38

76

9

18

3

6

50

 More than 11,000

1

100

0

0

0

0

1

Lymphocytic level

 Lymphopenia

0

0

0

0

0

0

0

1

 Normal

65

75.6

15

17.4

6

7

86

 Lymphocytosis

4

80

1

20

0

0

5