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Table 2 Criteria used in 36 published papers pleading for or against screening for unsafe driving. 36 published papers include 29 original studies, 4 literature reviews and 3 editorials; documented means that quantitative estimates were provided, indicators in parentheses are defined in figure 1

From: Systematic screening for unsafe driving due to medical conditions: Still debatable

Criteria and corresponding indicators Mentioned Documented
  n % n %
1. Are the consequences of the medical condition on road safety severe enough? 25 70 14 39
   High prevalence of the medical condition (Is 1 ) 15 42 3 11
   High proportion of individuals with medical condition who drive (Is 2 ) 10 28 4 11
   High proportion of drivers with medical condition who become unsafe (Is 3 ) 0 0 0 0
   Higher risk of collision of unsafe drivers due to medical condition (Is 4 ) 21 58 6 17
   Frequency of potential self-regulation strategies (Fms) 12 33 3 8
2. Is the potentially unsafe driving period defined and long enough? 1 3 0 0
   Definition of a potential unsafe driving period 0 0 0 0
   Length of the unsafe driving period 1 3 0 0
3. Is there a reliable and valid test? 24 67 13 36
   Performance of diagnostic test to detect medical conditions (Ip 1 ) 5 14 1 3
   Performance of diagnostic test to detect unsafe driving (Ip 2 ) 18 50 12 33
   Prediction of collision risk (Ip 3 ) 14 39 6 17
4. What should be the early intervention for drivers diagnosed unsafe? 20 55 15 42
   Nature of intervention 13 36 7 19
   Expected positive effects (Ipe) 11 30 7 19
   Expected negative effects (Ine) 12 33 2 5
5. Would the proposed screening programme result in more good than harm? 19 53 2 5
6. Would the minimal resources required to implement the screening programme acceptable? 8 22 2 5