Table 1 Demographic information and KAP scores

Total

637

7.60 ± 2.39

43.20 ± 4.57

34.57 ± 4.95

Gender

0.463

0.040

0.508

Male

239(37.52)

7.51 ± 2.59

42.72 ± 4.68

34.40 ± 4.90

Female

398(62.48)

7.66 ± 2.27

43.49 ± 4.49

34.67 ± 4.98

Age

< 0.001

0.011

0.208

≤ 30

152(23.86)

8.16 ± 2.45

43.64 ± 4.68

35.01 ± 5.40

31–40

227(35.64)

7.79 ± 2.24

43.72 ± 4.36

34.80 ± 5.10

41–50

172(27.00)

7.35 ± 2.36

42.63 ± 4.48

33.94 ± 4.40

≥ 51

86(13.50)

6.63 ± 2.40

42.21 ± 4.87

34.43 ± 4.69

Marital status

0.002

0.260

0.095

Unmarried/divorced/widowed

163(25.59)

8.10 ± 2.46

43.55 ± 4.65

35.12 ± 5.28

Married

474(74.41)

7.43 ± 2.34

43.08 ± 4.54

34.37 ± 4.82

Education

< 0.001

0.005

0.009

Junior high school and below

33(5.18)

5.48 ± 2.51

40.91 ± 4.71

32.45 ± 6.21

Senior high school

85(13.34)

6.48 ± 2.17

42.42 ± 4.71

33.56 ± 4.54

Bachelor

464(72.84)

7.79 ± 2.27

43.48 ± 4.34

34.89 ± 4.87

Master and above

55(8.63)

9.05 ± 2.18

43.42 ± 5.64

34.60 ± 5.01

Monthly household income

0.009

0.092

0.426

< 5000 yuan

92(14.44)

7.08 ± 2.49

42.27 ± 5.08

34.83 ± 5.54

5000–10,000 yuan

207(32.50)

7.41 ± 2.63

43.53 ± 4.35

34.78 ± 5.44

10,000–20,000 yuan

200(31.40)

7.74 ± 2.23

43.51 ± 4.49

34.64 ± 4.48

> 20,000 yuan

138(21.66)

8.06 ± 2.07

42.89 ± 4.59

33.96 ± 4.37

Occupation

< 0.001

< 0.001

0.009

Professional and technical personnel (teachers, doctors, engineers and technicians, writers and other professionals)

221(34.69)

8.54 ± 2.18

44.22 ± 4.27

35.39 ± 4.65

Business, service personnel

130(20.41)

6.88 ± 2.18

42.91 ± 4.34

34.15 ± 5.09

Others

286(44.90)

7.21 ± 2.43

42.56 ± 4.76

34.12 ± 5.04

Any underlying lung diseases (chronic obstructive pulmonary disease (COPD)/chronic bronchitis)

0.002

0.025

0.239

Yes

42(6.59)

6.69 ± 2.34

42.38 ± 5.10

35.02 ± 5.92

No

561(88.07)

7.73 ± 2.38

43.37 ± 4.50

34.61 ± 4.86

Unclear

34(5.34)

6.74 ± 2.31

41.41 ± 4.71

33.24 ± 5.09

Having been infected with SARS-CoV-2

0.013

0.106

0.001

Yes

493(77.39)

7.59 ± 2.43

43.11 ± 4.55

34.47 ± 4.92

No

118(18.52)

7.94 ± 2.10

43.86 ± 4.50

35.60 ± 4.74

Unclear

26(4.08)

6.42 ± 2.56

42.00 ± 5.04

31.69 ± 5.21