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 |