Training of NANDA‐I Nursing Diagnoses (NDs), Nursing Interventions Classification (NIC) and Nursing Outcomes Classification (NOC), in Psychiatric Wards: A randomized controlled trial

AIM: To assess the effect of Training NANDA‐I Nursing Diagnoses, Nursing Interventions Classification and Nursing Outcomes Classification (The NNN system), on the nursing care related to the patient safety, in psychiatric wards. METHOD: In a randomized controlled trial, 80 nurses were selected randomly and assigned into two, Control and Experimental, groups. Nurses documented reports, reviewed and analysed in terms of using the NNN system. The intervention of the study was the training of the NNN system, based on recognition of the signs, symptoms and aetiology of the important phenomena in the psychiatric wards. RESULTS: The Control Group used the NNN system (N = 34), both before and after the intervention, while the experimental group usage increased from (N = 26)–(N = 434). Therefore, the NNN system training, can improve the nursing care related to the patient safety in psychiatric wards.