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Table 1 Characteristics of measures of correlates of obesity-related behaviours included in the current study

From: Reliability of self-report measures of correlates of obesity-related behaviours in Hong Kong adolescents for the iHealt(H) and IPEN adolescent studies

Measures

Description

Source and adaptations

Test-retest reliabilitya

Cronbach’s α

Dietary behaviour

  Individual correlates

  Decisional balance for eating fruits and vegetables

5 items about ‘Pros’ and 4 items about ‘Cons’ rated on 4-point Likert scale

Adapted for TEAN study from Hagler et al. [40]

Pros: 0.87 [40]

Cons: 0.74 [40]

Pros: 0.78 [40]

Cons: 0.72 [40]

  Decisional balance for eating high-fat foods

4 items about ‘Pros’ and 3 items about ‘Cons’ rated on 4-point Likert scale

Adapted for TEAN study from Hagler et al. [40]

Pros: 0.85 [40]

Cons: 0.71 [40]

Pros: 0.64 [40]

Cons: 0.79 [40]

  Decisional balance for drinking sugar-sweetened beverages

3 items about ‘Pros’ rated on 4-point Likert scale

TEAN study

Unknown

Unknown

  Self-efficacy for eating fruits and vegetables

5 items rated on a 5-point scale ranging from ‘I’m sure I can’t’ to ‘I’m sure I can’

Adapted for TEAN study from Hagler et al. [40]

0.87 [40]

0.77 [40]

  Self-efficacy for eating low-fat foods

8 items rated on a 5-point scale ranging from ‘I’m sure I can’t’ to ‘I’m sure I can’

Included in TEAN study from Hagler et al. [40]

0.93 [40]

0.90 [40]

  Self-efficacy for reducing sugar-sweetened beverage intake

2 items rated on a 5-point scale ranging from ‘I’m sure I can’t’ to ‘I’m sure I can’

TEAN study

Unknown

Unknown

  Enjoyment of fruits and vegetables

Single item rated on 5-point Likert scale

TEAN study

Unknown

n/a

  Enjoyment of high-fat foods

Single item rated on 5-point Likert scale

TEAN study

Unknown

n/a

  Enjoyment of sugar-sweetened beverages

Single item rated on 5-point Likert scale

TEAN study

Unknown

n/a

  Social correlates

  Social support for eating fruits and vegetables

3 items about ‘support from adults’ and 3 items about ‘support from peers’ rated on a 4-point Likert scale

Adapted for TEAN study from Hagler et al. [40]

Adults: 0.79 [40]

Peers: 0.75 [40]

Adults: 0.74 [40]

Peers: 0.74 [40]

  Social support for eating high-fat foods

3 items about ‘support from adults’ and 3 items about ‘support from peers’ rated on a 4-point Likert scale

Adapted for TEAN study from Hagler et al. [40]

Adults: 0.93 [40]

Peers: 0.77 [40]

Adults: 0.77 [40]

Peers: 0.80 [40]

  Social support for drinking sugar-sweetened beverages

3 items about ‘support from adults’ and 3 items about ‘support from peers’ rated on a 4-point Likert scale

TEAN study

Unknown

Unknown

  Environmental correlates

  School food environment

4 dichotomous items (‘Yes’, ‘No’), one assessing healthy and 3 unhealthy school practices/policies

Active Where study [38]

Kappa range: 0.57–0.77 [38]

n/a

Physical activity behaviour

  Individual correlates

  Perceived barriers to active transport (cycling or walking) to/from school

19 items rated on a 4-point Likert scale

17 items from the Active Where study [38] and 2 items added by expert panel: ‘being tired’ and ‘having a tight schedule (no time)’

Original 17 items: 0.38–0.77 [38]

11-item version: 0.80 [41]

  Perceived barriers to active transport to/from closest park

17 items rated on a 4-point Likert scale

Active Where study [38]

0.32–0.78 [38]

Unknown

  Perceived barriers to active transport in the neighbourhood

9 items rated on a 4-point Likert scale

Active Where study [38]

0.35–0.63 [38]

Unknown

  Decisional balance for engagement in physical activity

5 items about ‘Pros’ and 5 items about ‘Cons’ rated on 4-point Likert scale

Adapted for TEAN study from Norman et al. [42]

Pros: 0.74 [42]

Cons: 0.86 [42]

Pros: 0.81 [42]

Cons: 0.53 [42]

  Self-efficacy for physical activity

6 items rated on a 5-point scale ranging from ‘I’m sure I can’t’ to ‘I’m sure I can’

Included in TEAN study from Norman et al. [42]

0.71 [42]

0.76 [42]

  Enjoyment of physical activity

Single item rated on 5-point Likert scale

Included in TEAN study from Norman et al. [42]

0.43 [42]

n/a

  Social correlates

  Social support for physical activity

3 items about ‘support from adults’ and 2 items about ‘support from peers’ rated on a 5-point frequency scale

Adapted for TEAN study from Norman et al. [42]

Adults: 0.78 [42]

Peers: 0.68 [42]

Adults: 0.81 [42]

Peers: 0.53 [42]

  Parental rules about physical activity

14 dichotomous items (‘Yes’, ‘No’)

Active Where study [38]

% agreement: 50% - 78% [38]

n/a

  Environmental correlates

  School physical activity equipment

6 dichotomous items (‘Yes’, ‘No’)

Active Where study [38]

% agreement: 77% - 86% [38]

n/a

  Physical activity equipment at home

10 dichotomous items (‘Yes’, ‘No’) and 4-point frequency scales

Active Where study [38]

% agreement: 55%–67%

Frequency scales: 0.49–0.75 [38]

n/a

  Perceived neighbourhood traffic safety

6 items rated on a 4-point Likert scale

Neighbourhood Environment Walkability Scale – Youth [43]

Items: 0.41–0.57 [38]

Scale: 0.67 [43]

0.81 [43]

  Perceived neighbourhood crime safety

8 items rated on a 4-point Likert scale

Neighbourhood Environment Walkability Scale – Youth [43]

Items: 0.34–0.74 [38]

Scale: 0.73 [43]

0.87 [43]

  Physical activity friendly school policy

2 items rated on a 5-point frequency scale

Active Where study [38]

0.27–0.57 [38]

n/a

Sedentary behaviour

  Individual correlates

  Decisional balance for engagement in sedentary behaviour

6 items about ‘Pros’ and 6 items about ‘Cons’ rated on 4-point Likert scale

Adapted for TEAN study from Norman et al. [42]

Pros: 0.30 [42]

Cons: 0.59 [42]

Pros: 0.61 [42]

Cons: 0.58 [42]

  Self-efficacy for reducing sedentary behaviour

7 items rated on a 5-point scale ranging from ‘I’m sure I can’t’ to ‘I’m sure I can’

Included in TEAN study from Norman et al. [42]

0.80 [42]

0.90 [42]

  Enjoyment of sedentary behaviour

Single item rated on 5-point Likert scale

Included in TEAN study from Norman et al. [42]

0.29 [42]

n/a

  Social correlates

  Social support for sedentary behaviour

Single item about ‘support from adults’ and 2 items about ‘support from peers’ rated on a 5-point frequency scale

Adapted for TEAN study from Norman et al. [42]

Adults: 0.93 [42]

Peers: 0.77 [42]

Adults: n/a

Peers: 0.58 [42]

  Parental rules about sedentary behaviour

3 dichotomous items (‘Yes’, ‘No’)

Adapted for TEAN study from Salmon et al. [44]

% agreement: 71% - 90% [44]

n/a

  Environmental correlates

  Screen media in bedroom

6 dichotomous items (‘Yes’, ‘No’)

Adapted from continuous items in Active Where study [38]

0.36–0.79 [38]

n/a

  Personal electronics

4 dichotomous items (‘Yes’, ‘No’)

Adapted from continuous items in Active Where study [38]

0.38–0.76 [38]

n/a

  1. aValues represent estimates of intra-class correlation (ICC) unless otherwise stated