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Table 1 Sample characteristics of grade 5 students participating in the CLASS II Project in Nova Scotia, Canada

From: The combined impact of diet, physical activity, sleep and screen time on academic achievement: a prospective study of elementary school students in Nova Scotia, Canada

Characteristics n = 4253
Age, mean (SD), years 11.0 (0.4)
Proportion Male (sex), % 47.2
Overweight or obese, % 34.7
Energy Intake, mean (SD), kcal 1849.9 (808.1)
Percentage of children who are meeting lifestyle behavior recommendations, % %
 Vegetables and Fruits (6 servings) 32.2
 Grain Products (6 servings) 20.8
 Milk and Alternatives (3–4 servings) 56.0
 Meat and Alternatives (1–2 servings) 86.4
 Saturated Fat Intake (<10% total energy) 54.3
 Free Sugars (<10% total energy) 62.6
 Physical Activity (PAQ-C Score >=2.7 for girls, >=2.9 for boys) 76.7
 Sleep Duration (9–11 h) 91.1
 Screen Time (<=2 h day of television) 77.8
Percentage of children meeting multiple lifestyle behavior recommendations, % %
 Low (1–3) 7.9
 Medium (4–6) 64.7
 High (7–9) 27.5
Academic Achievement, % meeting expectations %
 Reading 87.4
 Writing 89.1
 Mathematics 70.6
Parental Education, % %
 Secondary or Less 17.3
 College Diploma 38.4
 University or Graduate degree 36.3
 Missing/Prefer not to answer 8.0
Household Income (CAN$), % %
 <=20,000 20.3
 20,001–40,000 13.3
 40,001–60,000 24.1
 >=60,001 19.8
 Missing/Prefer not to answer 22.5
Region of Residence, % %
 Urban 69.7
 Rural 30.3