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Table 3 ICC for selected items of HBSC questionnaire by sex grade and residence

From: Test–retest reliability of selected HBSC items in Vietnam: well-being, physical and sedentary activities, and eating behaviours

Variables

ALL (n = 410)

Boys (n = 165)

Girls (n = 245)

6 (n = 77)

7 (n = 110)

8 (n = 115)

9 (n = 108)

Urban (n = 222)

Rural (n = 188)

ICC

95% CI

ICC

95% CI

ICC

95% CI

ICC

95% CI

ICC

95% CI

ICC

95% CI

ICC

95% CI

ICC

95% CI

ICC

95% CI

Health

 Self-Rated Health

0.73

0.68–0.77

0.65

0.55–0.73

0.78

0.72–0.82

0.82

0.74–0.88

0.73

0.63–0.81

0.71

0.60–0.79

0.68

0.56–0.77

0.72

0.66–0.78

0.74

0.67–0.80

 Life Satisfaction

0.79

0.75–0.83

0.80

0.73–0.85

0.79

0.73–0.83

0.77

0.65–0.85

0.81

0.72–0.87

0.85

0.79–0.89

0.73

0.63–0.81

0.82

0.76–0.86

0.76

0.68–0.81

Health complaints

 Headache

0.48

0.40–0.55

0.43

0.29–0.55

0.51

0.40–0.60

0.43

0.23–0.60

0.59

0.45–0.71

0.57

0.43–0.69

0.32

0.14–0.48

0.51

0.41–0.61

0.44

0.31–0.55

 Stomach ache

0.56

0.48–0.62

0.61

0.50–0.70

0.52

0.42–0.61

0.64

0.48–0.77

0.37

0.19–0.54

0.61

0.48–0.72

0.57

0.43–0.70

0.59

0.49–0.67

0.51

0.39–0.61

 Backache

0.46

0.37–0.54

0.45

0.31–0.57

0.46

0.35–0.56

0.41

0.18–0.59

0.50

0.34–0.64

0.55

0.40–0.67

0.35

0.17–0.51

0.47

0.36–0.57

0.44

0.30–0.55

 Feeling low

0.53

0.45–0.60

0.54

0.41–0.64

0.51

0.41–0.60

0.39

0.17–0.57

0.61

0.46–0.72

0.52

0.36–0.64

0.52

0.36–0.65

0.60

0.51–0.68

0.44

0.31–0.55

 Irritability

0.51

0.43–0.58

0.50

0.36–0.61

0.51

0.41–0.60

0.36

0.13–0.55

0.49

0.32–0.63

0.52

0.37–0.65

0.62

0.49–0.73

0.53

0.42–0.62

0.48

0.36–0.59

 Nervous

0.43

0.35–0.51

0.39

0.24–0.51

0.46

0.35–0.55

0.52

0.33–0.67

0.40

0.22–0.56

0.30

0.11–0.46

0.51

0.35–0.64

0.50

0.39–0.60

0.34

0.20–0.46

 Sleep difficulties

0.57

0.50–0.63

0.44

0.31–0.56

0.65

0.56–0.71

0.46

0.24–0.63

0.48

0.32–0.62

0.70

0.59–0.79

0.59

0.45–0.70

0.56

0.46–0.65

0.55

0.43–0.65

 Feeling dizzy

0.47

0.39–0.55

0.24

0.08–0.39

0.57

0.48–0.65

0.51

0.32–0.66

0.37

0.18–0.52

0.57

0.42–0.69

0.43

0.26–0.57

0.42

0.30–0.52

0.55

0.43–0.64

Physical activity

 MVPA

0.58

0.51–0.64

0.55

0.44–0.65

0.54

0.44–0.62

0.63

0.48–0.80

0.68

0.56–0.77

0.60

0.43–0.68

0.45

0.29–0.60

0.49

0.38–0.59

0.67

0.58–0.74

 VPA

0.57

0.50–0.63

0.49

0.36–0.60

0.51

0.41–0.60

0.55

0.37–0.69

0.48

0.32–0.61

0.61

0.47–0.71

0.64

0.51–0.74

0.52

0.42–0.61

0.61

0.52–0.70

Screen-time

 Gaming

0.62

0.55–0.68

0.60

0.50–0.69

0.63

0.54–0.70

0.62

0.46–0.74

0.67

0.56–0.77

0.52

0.37–0.64

0.64

0.51–0.74

0.65

0.57–0.72

0.55

0.44–0.64

 Social media

0.72

0.67–0.77

0.57

0.45–0.66

0.77

0.71–0.81

0.45

0.25–0.61

0.73

0.63–0.81

0.68

0.57–0.77

0.77

0.68–0.84

0.73

0.66–0.79

0.71

0.63–0.77

 Internet videos

0.67

0.61–0.72

0.55

0.44–0.65

0.72

0.65–0.78

0.72

0.59–0.81

0.67

0.56–0.77

0.65

0.53–0.75

0.61

0.48–0.72

0.63

0.54–0.70

0.71

0.63–0.77

 TV, DVD

0.51

0.44–0.58

0.58

0.46–0.67

0.47

0.37–0.56

0.69

0.55–0.79

0.34

0.16–0.49

0.49

0.34–0.62

0.63

0.50–0.73

0.56

0.50–0.64

0.45

0.33–0.56

Eating behaviour

 Breakfast

0.54

0.46–0.61

0.40

0.26–0.56

0.61

0.53–0.69

0.45

0.25–0.61

0.50

0.34–0.64

0.65

0.52–0.74

0.55

0.40–0.67

0.57

0.47–0.65

0.50

0.38–0.60

 Fruit

0.56

0.49–0.62

0.51

0.39–0.62

0.60

0.51–0.67

0.52

0.34–0.67

0.53

0.38–0.65

0.60

0.47–0.70

0.58

0.43–0.70

0.56

0.46–0.64

0.56

0.46–0.66

 Vegetable

0.65

0.60–0.70

0.59

0.47–0.68

0.70

0.63–0.76

0.57

0.40–0.70

0.66

0.54–0.76

0.76

0.67–0.83

0.60

0.46–0.71

0.64

0.55–0.71

0.68

0.59–0.75

 Sweets

0.57

0.50–0.63

0.42

0.28–0.54

0.65

0.56–0.71

0.40

0.18–0.57

0.58

0.44–0.69

0.62

0.49–0.72

0.57

0.42–0.68

0.53

0.42–0.61

0.59

0.49–0.68

 Soft-Drinks

0.60

0.53–0.66

0.55

0.44–0.65

0.63

0.54–0.70

0.50

0.31–0.65

0.62

0.49–0.72

0.72

0.62–0.80

0.47

0.31–0.61

0.57

0.47–0.66

0.58

0.47–0.66