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Table 5 Associations of computer and cell phone use with overweight at 17 y

From: Are computer and cell phone use associated with body mass index and overweight? A population study among twin adolescents

   Overweight, n (%) Logistic regression, adjusted for gender, physical exercise, and parents' education and occupational category
Computer at home No 50 (9) 1.0
  Yes   
     without Internet 84 (13) 2.26 (1.35 to 3.76)
     with Internet 269 (9) 1.51 (0.94 to 2.42)
Weekly computer use for school, work, and recreation (hours) 0–1 23 (10) 1.0
  >1–3 32 (11) 0.95 (0.62 to 1.46)
  >3–6 36 (9) 1.19 (0.79 to 1.81)
  >6–12 51 (12) 1.61 (1.07 to 2.41)
  >12–115 88 (15) 1.81 (1.20 to 2.75)
Cell phone bill (continuous) - 1.02 (0.90 to 1.16)
Cell phone bill in a month (euros) No cell phone 31 (12) 1.25 (0.76 to 2.06)
  < 10 50 (11) 1.05 (0.71 to 1.56)
  10 – 20 106 (8) 0.73 (0.54 to 0.98)
  20 – 35 159 (10) 1.0
  >35 57 (12) 1.23 (0.85 to 1.78)