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Table 2 Median and mean number of contacts/episodes with health provider/service (standard deviation (sd)) per 10 person-years for people in treatment for substance use disorders between 2011 and 2014 and their comparators in Belgium, overall, by substance and by sex (2008-2017)

From: Use of health care services by people with substance use disorders in Belgium: a register-based cohort study

    Contacts with GP a Contacts with psychiatrist Contacts with ED a Hospital admissions
   n median mean sd median mean sd median mean sd median mean sd
overall control 123620 23 30.8 33.3 0 0.5 1.2 1 1.9 2.9 1 2.5 9.4
  case 30905 43 59.9 68.4 0 3.9 10.8 5 7.8 11.9 6 16.0 30.8
opiates control 22764 19 26.1 29.4 0 0.6 4.5 1 2.1 3.3 1 2.2 9.7
  case 5691 44 68.5 82.7 0 3.9 14.1 5 7.9 10.8 5 10.1 21.4
cocaine/crack control 16908 20 26.7 27.9 0 0.4 3.7 1 1.9 2.8 1 2.1 10.0
  case 4227 36 47.0 49.1 0 2.7 7.8 5 7.0 8.4 4 10.6 23.1
stimulants control 10692 23 29.1 27.5 0 0.4 3.1 1 1.8 2.6 1 2.2 8.7
  case 2673 40 53.3 55.7 0 2.5 8.0 4 5.8 6.5 4 11.9 25.0
cannabis control 23120 19 24.8 25.2 0 0.4 2.9 1 2.0 2.9 1 1.8 6.7
  case 5780 31 39.6 43.1 0 2.1 6.5 3 5.6 8.3 3 8.9 21.9
alcohol control 37344 29 38.0 39.3 0 0.7 5.1 1 1.6 2.7 1 3.2 10.4
  case 9336 51 64.7 62.7 1 5.0 11.2 6 9.1 14.2 12 24.2 38.4
women control 32268 33 41.6 40.6 0 0.7 4.4 1 1.7 3.0 2 3.4 9.5
  case 8067 62 81.9 84.1 1 4.9 11.8 6 8.6 12.7 11 22.5 13.3
men control 91316 20 26.9 29.3 0 0.5 4.1 1 1.9 2.9 1 2.2 9.4
  case 22829 37 52.1 60.1 0 3.5 10.4 5 7.6 11.6 5 13.7 27.8
  1. aGP general practitioner, ED emergency department