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Table 3 Level of preventability of the AEs

From: Estimating the incidence of adverse events in Portuguese hospitals: a contribution to improving quality and patient safety

  n % Preventability
Virtually no evidence of preventability 43 23.1% 46.8% not preventable
Slight to modest evidence of preventability 23 12.4%
Preventability not quite likely (less than 50/50, but “close call”) 21 11.3%
Preventability more than likely (more than 50/50 but “close call” 26 14.0% 53.2% Preventable
Strong evidence of preventability 51 27.4%
Virtually certain evidence of preventability 22 11.8%
Total 186 100% 100%