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Table 1 Frequencies of categorical variables in general questions from all responders: 108 (100%)

From: Temporary anchorage device usage: a survey among Swiss orthodontists

  Frequency Percentage
Orthodontic technique   
  Straight wire (sliding) 66 61.1
  Straight wire (loop mechanics) 26 24.1
  Standard edge wise 12 11.1
  All other systems 4 3.7
Self-ligation   
  Yes 62 57.4
  No 46 42.6
Bracket slot sizes or types   
  0.018″ 43 39.8
  0.022″ 64 59.4
  0.018″ (front) and 0.022″ (back) 1 0.9
Country where specialisation was obtained   
  Switzerland 84 77.8
  Germany 7 6.5
  Other 6 5.5
  Undefined 11 10.2
University where specialisation was obtained   
  Zürich 43 39.8
  Bern 23 21.3
  Basel 8 7.4
  Geneva 11 10.2
  Outside of Switzerland 11 10.2
  Undefined 12 11.1
Working in private practice as   
  Practice owner 64 59.3
  Practice partner 12 11.1
  Assistant or associate 13 12.0
  Not working in private practice 16 14.8
  Other 3 2.8
Gender   
  Male 81 75.0
  Female 27 25.0