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Table 1 Distribution of health risk behaviors in subjects by grade (n = 1,820)

From: Changes in health risk behaviors of elementary school students in northern Taiwan from 2001 to 2003: results from the child and adolescent behaviors in long-term evolution study

Behavior Grade 4 (2001) Grade 5 (2002) Grade 6 (2003)
  once/twice many times every day ever Rank once/twice many times every day ever Rank once/twice many times every day ever Rank
Staying up late 45.13 22.43 14.73 82.29 1 45.19 20.89 15.67 81.75 1 39.82 29.59 19.03 88.44 1
Eating snacks at night 45.38 13.63 9.73 68.74 2 46.43 11.76 9.18 67.37 2 47.28 15.52 8.75 71.55 2
Watching TV for prolonged periods 36.73 19.83 11.58 68.14 3 33.02 17.78 10.18 60.98 4 36.03 20.74 12.38 69.15 4
Eating fast food 56.77 5.94 1.82 64.53 4 57.64 5.00 1.32 63.96 3 54.87 5.72 1.10 61.69 5
Swearing 46.37 9.02 3.69 59.08 5 46.08 10.33 4.03 60.44 5 48.16 17.01 6.05 71.22 3
Hitting others 43.53 8.98 1.82 54.33 6 31.98 4.29 1.98 38.25 7 39.45 7.53 2.47 49.45 6
Suppressing urination 44.56 7.01 2.43 54.00 7 41.26 3.41 1.48 46.15 6 41.42 5.23 0.94 47.59 7
Playing video games for prolonged periods 29.04 8.26 5.95 43.25 8 21.37 6.77 6.17 34.31 8 22.78 12.30 9.05 44.13 8
Throwing things when angry 23.19 2.65 1.82 27.66 9 18.02 2.7 1.32 22.04 9 22.16 3.52 1.59 27.27 9
Drinking alcohol 7.2 0.93 0.33 8.46 10 5.39 0.55 0.06 6.00 11 4.18 0.66 0.38 5.22 11
Vandalism 6.35 0.55 0.17 7.07 11 6.27 0.66 0.33 7.26 10 7.20 0.88 0.22 8.30 10
Smoking 1.16 0.17 0.06 1.39 12 0.82 0.11 0.05 0.98 12 0.71 0.11 0.00 0.82 12
Chewing betel nut 0.55 0.33 0.11 0.99 13 0.33 0.00 0.05 0.38 13 0.11 0.05 0.00 0.16 13