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Table 1 Characteristics of participants and health behaviours at baseline and follow up by gender and by cohort

From: Longitudinal changes in health behaviours and body weight among Swedish school children - associations with age, gender and parental education – the SCIP school cohort

  Grade 2 cohort Grade 4 cohort Grade 7 cohort
  Baseline N = 307 Follow-up N = 299 Baseline N = 300 Follow-up N = 294 Baseline N = 206 Follow-up N = 202
Girls N = 151 N = 148 N = 157 N = 155 N = 98 N = 97
Age (years ± SE) 8.74 ± 0.03 10.74 ± 0.03 10.81 ± 0.03 12.81 ± 0.03 13.90 ± 0.03 15.90 ± 0.03
Parental education high (%) - 69.6 - 65.0 - 56.1
Eats breakfast every school day (%) 96.6 98.4 91.7 89.1 84.5 67.5
Eats lunch every school day (%) 96.5 91.3 87.2 76.6 65.6 73.5
Eats vegetables at least twice a day (%) 44.4 40.0 35.7 24.8 28.9 32.5
Eats fruit at least twice a day (%) 34.0 22.2 24.8 15.9 12.4 16.9
Eats sweets at most twice a week (%) 81.4 78.4 76.1 82.4 73.2 74.7
Drinks sweetened drinks at most twice a week (%) 84.1 81.8 81.9 77.5 86.6 78.3
Watches TV at most three hours every school day (%) 100.0 95.2 98.0 92.8 94.9 89.2
Is member of a club (%) 85.5 84.1 85.9 80.4 78.1 62.7
Participates in sports at least three times a week (%) 31.9 54.4 50.3 57.3 56.7 51.2
Spends at least 30 minutes outdoors every school day (%) 93.1 76.2 89.0 81.0 79.8 65.1
Walks or bikes to school at least three days a week (%) 64.8 78.6 77.1 70.4 72.6 60.5
Is physically active during breaks at least 3 days a week (%) 70.6 54.0 71.3 20.4 14.6 3.6
Obese (%) 3.3 0.7 3.2 1.9 3.1 1.0
Overweight/obese (%) 15.9 14.6 18.5 12.1 14.3 12.2
BMIsds (mean ± SE) 0.27 ± 0.09 0.07 ± 0.10 0.30 ± 0.08 0.33 ± 0.08 0.22 ± 0.12 0.19 ± 0.10
Boys N = 156 N = 151 N = 143 N = 139 N = 108 N = 105
Age (years ± SE) 8.77 ± 0.02 10.77 ± 0.02 10.80 ± 0.02 12.80 ± 0.02 13.91 ± 0.03 15.91 ± 0.03
Parental education high (%) - 65.5 - 62.0 - 60.2
Eats breakfast every school day (%) 97.4 95.6 94.3 86.9 86.8 75.0
Eats lunch every school day (%) 97.4 85.3 88.7 82.0 63.2 76.1
Eats vegetables at least twice a day (%) 31.1 25.2 36.9 18.0 21.7 20.5
Eats fruit at least twice a day (%) 29.1 14.1 23.9 11.5 14.2 9.3
Eats sweets at most twice a week (%) 79.3 83.2 78.2 80.3 74.5 69.3
Drinks sweetened drinks at most twice a week (%) 81.3 79.4 72.5 70.5 58.5 48.9
Watches TV at most three hours every school day (%) 100.0 97.1 98.6 95.0 92.3 87.5
Is member of a club (%) 86.7 82.5 90.9 76.9 77.4 65.9
Participates in sports at least three times a week (%) 56.7 66.4 69.7 64.5 78.1 62.5
Spends at least 30 minutes outdoors every school day (%) 92.7 86.8 89.7 76.0 83.0 78.4
Walks or bikes to school at least three days a week (%) 54.7 76.7 83.6 61.0 78.3 56.3
Is physically active during recess at least 3 days a week (%) 80.3 81.6 86.4 40.5 48.1 19.5
Obese (%) 2.6 5.1 4.9 5.6 1.9 1.9
Overweight/obese (%) 20.5 18.6 20.3 18.2 18.5 15.7
BMIsds (mean ± SE) 0.53 ± 0.10 0.61 ± 0.11 0.55 ± 0.10 0.41 ± 0.10 0.33 ± 0.10 0.27 ± 0.10