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Table 1 Ordinal 5-category screen based media variables constructed from MARCA data

From: Screen-based media use clusters are related to other activity behaviours and health indicators in adolescents

  N % Min Max
(h/wk) (h/wk)
Computer-general use
  1 313 48.7 0 0
  2 68 59.3 0.1 1.0
  3 87 13.5 1.1 2.0
  4 91 14.2 2.1 4.0
  5 84 13.1 4.1 71.6
Computer-email
  1 491 76.4 0 0
  2 44 6.8 0.1 1.0
  3 36 5.6 1.1 3.0
  4 32 5.0 3.1 7.0
  5 40 6.2 7.1 27.9
Computer-graphics
  1 553 86.0 0 0
  2 16 2.5 0.2 0.7
  3 35 5.4 0.8 1.2
  4 17 2.6 1.3 2.0
  5 22 3.4 2.1 9.4
Computer-internet
  1 390 60.6 0 0
  2 72 11.2 0.1 1.0
  3 53 8.2 1.1 1.5
  4 63 9.8 1.6 3.0
  5 65 10.1 3.1 32.3
Computer-word processing
  1 532 82.7 0 0
  2 36 5.6 0.1 1.0
  3 21 3.3 1.1 1.5
  4 17 2.6 1.6 2.0
  5 37 5.8 2.1 10.9
Computer-games
  1 342 53.2 0 0
  2 90 14.0 0.1 2.0
  3 60 9.4 2.1 4.0
  4 66 10.3 4.1 8.0
  5 85 13.2 8.1 82.5
Non-computer games^
  1 412 64.1 0 0
  2 57 8.9 0.1 1.0
  3 53 8.2 1.1 2.5
  4 65 10.1 2.6 7.0
  5 56 8.7 7.2 43.0
Television
  1 66 10.3 0 6.0
  2 103 16.0 6.1 10.0
  3 308 47.9 10.1 23.0
  4 101 15.7 23.1 32.0
  5 65 10.1 32.0 56.8
  1. Category thresholds based on first group containing zeros and remaining cases roughly equally distributed with sensible category thresholds.
  2. ^ includes console games such as PlayStation, hand held electronic games such as GameBoy and video centre game playing, although there were only 11 non-zero cases for video centre and 41 non-zero cases for hand held games