Secondary outcome The number of incident reports during a 1-year period prior to implementation was 116, whereof 36 (31%) were due to communication errors, in the intervention group. During a 1-year period after implementation, the number of incident reports had increased but the proportion of incident reports due to communication errors had decreased to 11% (23 of 208) in the intervention group. The decrease in the proportions of incident reports due to communication errors in the intervention group was statistically significant (