Table 3 Evaluation of items based on item response theory and confirmatory factor analysis

A01

Prevention of influenza

66.2

0.44

0.37

0.60

−0.82

A02

Hypertension

85.3

0.40

0.35

0.75

−1.78

A03

Health food

88.3

0.28

0.24

0.51

−2.67^a

A04

Transfusion

64.4

0.51

0.47

0.80

−0.63

A05

AIDS detection and consultation

92.1

0.32

0.28

0.74

−2.43^a

A06

Pregnancy and hazardous job

91.2

0.31

0.25

0.65

−2.54^a

A08

Range of body temperature

76.5

0.27

0.20

0.33

−2.25^a

A11

Food label

96.7

0.23

0.19

0.74

−3.21^a

A15

Health examination

72.8

0.44

0.39

0.68

−1.11

B01

Definition of health

71.5

0.59

0.55

1.18

−0.79

B02

Improve resident’s health

78.4

0.56

0.50

1.19

−1.06

B03

Blood donation

80.4

0.50

0.46

0.99

−1.24

B04

Transmission of hepatitis B

70.7

0.51

0.48

0.83

−0.89

B05

Self-measured blood pressure

51.7

0.50

0.48

0.74

−0.11

B07

Early signals of cancer

60.4

0.59

0.57

1.06

−0.41

B08

Chronic diseases

56.7

0.50

0.49

0.76

−0.32

B09

Management of gas poisoning

80.4

0.49

0.43

0.93

−1.29

B10

Treatment of tuberculosis

80.9

0.40

0.36

0.66

−1.62

B11

Folic acid supplementation

56.5

0.53

0.53

0.85

−0.30

B12

Occupational protection

69.6

0.53

0.48

0.87

−0.81

B13

Iodine deficiency

71.9

0.53

0.51

0.95

−0.87

B14

Pesticide residues

41.0

0.31

0.31

0.40

0.56^a

B18

Children immunization

85.4

0.47

0.42

0.99

−1.53

B23

Health knowledge

71.2

0.44

0.41

0.66

−1.04

B26

Warning icons

71.0

0.57

0.55

1.08

−0.80

B31

Adult pulse

72.7

0.49

0.46

0.81

−0.99

B34

Dog bite

90.4

0.29

0.21

0.57

−2.72^a

B38

Expired food

87.0

0.46

0.42

1.01

−1.62

C02

Liver function

27.9

0.48

0.52

0.88

0.85

C03

Transmission of tuberculosis

30.4

0.43

0.47

0.72

0.83

C04

Child fever and rash

51.9

0.58

0.59

1.01

−0.12

C05

Osteoporosis

10.8

0.42

0.48

1.41

1.53

C06

Prevention of chronic diseases

43.4

0.55

0.55

0.91

0.20

C07

Health food selection

54.5

0.60

0.62

1.09

−0.21

C08

Dead livestock

70.5

0.52

0.50

0.86

−0.87

C17

Pesticide custody

61.7

0.34

0.29

0.32

−0.90^a

D06

Weight control

70.9

0.50

0.47

0.73

−0.38

D07

Obesity-related disease

75.2

0.53

0.53

0.90

−0.86

A07

Fruit and vegetable

75.2

0.40

0.36

0.53

−1.44

A09

Internet addiction

90.4

0.20

0.16

0.29

−4.74^a

A10

Child and adolescent depression

87.6

0.37

0.32

0.68

−2.07^a

A12

Lack of sleep

92.4

0.30

0.25

0.68

−2.60^a

A13

Obtain health knowledge

93.3

0.30

0.26

0.72

−2.61^a

A14

Attitude toward chronic diseases

57.0

0.38

0.32

0.41

−0.45^a

B06

Smoking

54.9

0.55

0.63

0.83

−0.21

B15

Sport and electrolytes

70.0

0.48

0.44

0.71

−0.90

B16

Mental health

86.0

0.51

0.50

1.34

−1.34

B17

Public health service

46.3

0.56

0.52

0.88

0.12

B19

Fever symptom

79.3

0.42

0.33

0.64

−1.51

B20

Adverse drug reaction

79.0

0.39

0.31

0.57

−1.62^a

B21

Health care card for pregnant women

52.6

0.45

0.40

0.57

−0.14

B27

Medical care procedure

71.8

0.57

0.54

1.14

−0.78

B29

House ventilation

65.7

0.50

0.45

0.79

−0.66

B39

Drug addiction

61.1

0.52

0.52

0.76

−0.48

C01

Mental health promotion

50.8

0.58

0.55

0.99

−0.05

C10

Bean products

23.4

0.52

0.49

1.03

1.00

C11

Sport and health

41.5

0.60

0.58

1.10

0.26

C13

Cough and sneeze

32.4

0.51

0.45

0.81

0.70

C14

Length of hospital stay

59.8

0.56

0.54

0.90

−0.39

C15

Management of type 2 diabetes

26.8

0.55

0.50

1.03

0.84

B22

Medical institutions

77.4

0.55

0.52

1.12

−0.88

B24

Infectious diseases

78.2

0.58

0.55

1.35

−0.82

B25

Food poisoning

78.6

0.57

0.54

1.36

−0.85

B28

OTC drugs

37.3

0.54

0.51

0.59

1.05

B30

Reading a thermometer

51.2

0.59

0.56

0.80

0.18

B32

Prenatal examination

41.2

0.44

0.39

0.38

1.05

B33

Condoms and STDs

84.2

0.52

0.51

1.19

−1.13

B35

Slight burns and scalds

70.9

0.49

0.44

0.69

−0.80

B36

Fire escape

77.8

0.46

0.41

0.66

−1.24

B37

Bleeding wound management

22.7

−0.04

−0.16

0.03

0.00^a

B40

Electrical injury

70.6

0.43

0.40

0.42

−1.04

C09

Cardiopulmonary resuscitation

53.7

0.65

0.65

1.06

0.09

C12

Diabetes

43.8

0.51

0.46

0.53

0.60

C16

Brest feeding

42.3

0.51

0.50

0.56

0.70

C18

Lightning storms

76.9

0.44

0.40

0.58

−1.23

D01

Indications of amoxicillin

25.0

0.55

0.54

0.86

1.42

D02

Use of amoxicillin

64.4

0.50

0.43

0.55

−0.38

D03

Adverse reaction of amoxicillin

54.2

0.65

0.62

1.07

0.05

D04

Calculation of BMI

41.8

0.62

0.58

0.94

0.60

D05

Classification of BMI

45.7

0.59

0.53

0.77

0.46