“…This drop-out occurs, for example through the mortality of the residents, and nursing staff turnover [84,85]. Four studies did not report any positive outcomes from the continuing education interventions [50,55,61,68]. There were quite several studies that did not follow the reporting guidelines, in which case the primary and secondary measures and outcomes were not clearly mentioned [42, 44, 46-50, 57, 61, 63, 64, 67, 69, 74, 75].…”