Table 1 Chronology of validation and evaluation process
StageNo of proceduresObserved without preconceptionsObserved using structured observation listComplemented by questionnairesChecklist used in practice
Validation 141+*−−−
Validation 230+†+*+−
Validation 3100−+‡+−
Evaluation350−−−+

  • *Peroperative part. †Pre- and postoperative part. ‡Pre-, per- and postoperative part.