Table 4

Validity of COMPASS self-reported (S) and objectively measured (M) weight status and dietary intake measures
N Intraclass correlation Cronbach’s `lpha Spearman correlation Kappa/Weighted Kappa
ICC α rho μ (SD)
Weight Status (males and females) §
 Height (cm) 139 0.88 0.94 0.88 (p < 0.001) -
 Weight (kg) 139 0.95 0.98 0.96 (p < 0.001) -
 Body Mass Index (kg/m2) 139 0.84 0.92 0.86 (p < 0.001) -
Weight Status (males only) §
 Height (cm) 74 0.84 0.91 0.84 (p < 0.001) -
 Weight (kg) 74 0.95 0.98 0.96 (p < 0.001) -
 Body Mass Index (kg/m2) 74 0.85 0.92 0.86 (p < 0.001) -
Weight Status (females only) §
 Height (cm) 65 0.82 0.89 0.83 (p < 0.001) -
 Weight (kg) 65 0.94 0.99 0.97 (p < 0.001) -
 Body Mass Index (kg/m2) 65 0.83 0.93 0.86 (p < 0.001) -
Dietary Intake §
 Meat and alternatives (0–5 servings) 178 0.34 0.56 0.38 (p < 0.001) 0.36 (0.05)
 Fruits and vegetables (0–9 servings) 178 0.53 0.70 0.54 (p < 0.001) 0.47 (0.05)
 Milk and alternatives (0–6 servings) 178 0.60 0.77 0.63 (p < 0.001) 0.48 (0.04)
 Grain products (0–9 servings) 178 0.41 0.64 0.47 (p < 0.001) 0.33 (0.05)
Meeting Food Guide Recommendation §
 Meat and alternatives a 178 0.45 0.63 0.46 (p < 0.001) 0.45 (0.07)
 Fruits and vegetables b 178 0.54 0.70 0.54 (p < 0.001) 0.54 (0.11)
 Milk and alternatives c 178 0.52 0.69 0.52 (p < 0.001) 0.51 (0.06)
 Grain products d 178 0.36 0.58 0.41 (p < 0.001) 0.37 (0.08)

§ Self-reported measure at Time 2 and objective measure taken at Time 2.

a ≥2 servings for females, ≥3 servings for males.

b ≥7 servings for females, ≥8 servings for males.

c ≥3 servings for females and males.

d ≥6 servings for females, ≥7 servings for males.

Leatherdale and Laxer

Leatherdale and Laxer International Journal of Behavioral Nutrition and Physical Activity 2013 10:42   doi:10.1186/1479-5868-10-42

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