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Table 2 Observed and expected prevalence of health risk behaviours, individually and in combination

From: Clustering and correlates of screen-time and eating behaviours among young adolescents

No. of health behaviours High TV/DVD Low fruit and vegetable consumption High energy-dense snack food consumption O (%) E (%) O/E (95% CI)
3 x x x 26.57 25.06 1.06 (1.01, 1.15)
2 x x - 25.81 25.93 0.99 (0.90, 1.08)
  - x x 7.02 10.71 0.65 (0.49, 0.82)
  x - x 10.44 8.98 1.16 (0.95, 1.38)
1 x - - 6.45 9.29 0.69 (0.51, 0.88)
  - x - 13.28 11.08 1.20 (1.02, 1.38)
  - - x 4.74 3.84 1.23 (0.84, 1.63)
0 - - - 4.55 3.97 1.15 (0.75, 1.54)
  1. O observed prevalence; E expected prevalence; 95% CI 95% confidence interval; X guideline not met; guideline met
  2. Bold: observed over expected ratios >1 are indicative of clustering