Table 2 Knowledge, attitude and practice score of the study subjects according to different variables (N = 18,697)

Sex

Male

40.61 ± 15.04

89.99 ± 15.91

42.56 ± 24.04

44.18 ± 16.13

89.87 ± 15.01

65.99 ± 29.68

Female

38.65 ± 15.11

91.25 ± 12.95

43.62 ± 25.13

40.88 ± 15.62

90.41 ± 14.35

64.21 ± 31.79

t/p value ^a

5.362/0.001

−3.575/0.001

−1.766/0.078

11.004/0.001

−1.960/0.50

3.036/0.002

Age (years)

18 to 30

40.22 ± 14.74

91.01 ± 13.69

41.93 ± 23.65

39.34 ± 14.74

89.71 ± 15.64

62.97 ± 30.70

31 to 50

39.80 ± 15.22

90.64 ± 15.46

42.76 ± 24.87

42.80 ± 15.18

90.75 ± 13.68

64.89 ± 31.16

51 & above

38.25 ± 15.38

89.94 ± 14.51

45.80 ± 25.30

41.70 ± 16.65

89.72 ± 15.34

65.06 ± 30.94

F/p value ^a

7.579/0.001

2.322/0.098

11.107/0.001

16.859/0.001

7.402/0.001

1.299/0.273

Area

Urban

43.15 ± 16.01

90.62 ± 14.24

46.53 ± 25.14

44.38 ± 17.02

89.58 ± 16.09

64.72 ± 30.99

Rural

36.75 ± 13.68

90.63 ± 14.73

40.29 ± 23.77

40.02 ± 14.47

90.78 ± 13.06

65.01 ± 31.08

t/p value ^a

17.766/0.001

−0.032/0.974

10.472/0.001

15.084/0.001

−4.491/0.001

−0.515/0.001

Education

Illiterate

26.80 ± 10.25

86.90 ± 19.41

38.49 ± 22.37

31.03 ± 12.20

88.90 ± 15.42

60.62 ± 28.64

Primary to 8th grade

34.23 ± 12.45

90.46 ± 14.49

39.721 ± 23.32

39.06 ± 14.45

90.08 ± 15.48

63.98 ± 30.57

Secondary to higher secondary

40.41 ± 13.27

92.09 ± 12.92

42.38 ± 24.38

45.46 ± 14.76

91.44 ± 12.80

65.13 ± 33.07

Graduate & above

46.77 ± 15.04

91.01 ± 13.57

47.25 ± 25.56

50.08 ± 15.74

90.17 ± 14.02

68.31 ± 30.99

F/p value ^a

575.073/0.001

20.893/0.001

48.094/0.001

755.416/0.001

10.548/0.001

25.109/0.001

Monthly Family Income (in US$)

Low income (≤905)

32.17 ± 12.40

90.38 ± 15.78

37.50 ± 22.91

35.40 ± 14.01

90.61 ± 14.71

62.83 ± 30.52

Lower-middle income (906–3595)

40.47 ± 14.63

90.86 ± 13.79

44.02 ± 24.50

42.57 ± 15.39

90.52 ± 14.07

65.66 ± 30.89

Upper-middle income (3596–11,115)

45.75 ± 15.50

90.47 ± 14.84

47.58 ± 25.26

46.82 ± 16.29

89.28 ± 15.47

64.97 ± 31.66

High income (≥11,116)

47.71 ± 15.11

89.55 ± 15.53

44.70 ± 27.15

48.85 ± 17.25

88.59 ± 15.88

65.09 ± 32.22

F/p value ^a

258.954/0.001

0.882/0.450

46.729/0.001

275.329/0.001

6.759/0.001

5.202/0.001

BMI

Underweight

33.59 ± 13.44

90.31 ± 15.52

35.57 ± 22.28

33.16 ± 14.09

90.26 ± 14.66

61.24 ± 28.76

Normal

38.20 ± 14.83±

90.46 ± 14.90

41.64 ± 24.43

40.96 ± 15.68

90.15 ± 14.61

65.08 ± 30.86

Overweight

42.14 ± 15.04

90.85 ± 13.51

45.6 ± 24.85

43.68 ± 15.82

90.54 ± 13.98

66.26 ± 30.66

Obese

42.10 ± 15.49

90.83 ± 14.72

46.46 ± 24.55

43.88 ± 15.88

89.70 ± 15.61

62.90 ± 32.46

F/p value ^a

69.586/0.001

0.450/0.717

35.263/0.001

101.537/0.001

1.717/0.161

9.022/0.001