The objectives of this study were (1) to investigate the effect of nurse training on the use of potentially harmful medications; and (2) to explore the effect of nurse training on residents' health-related quality of life (HRQoL), health service utilization, and mortality.
A randomized controlled trial.
In total, 227 residents in 20 wards of assisted living facilities in Helsinki were recruited. The 20 wards were randomized into those in which (1) staff received two 4-hour training sessions on appropriate medication treatment (intervention group), and (2) staff received no additional training and continued to provide routine care (control group).
Two 4-hour interactive training sessions for nursing staff based on constructive learning theory to recognize potentially harmful medications and corresponding adverse drug events.
Use of potentially harmful medications, HRQoL assessed using the 15 dimensional instrument of health-related quality of life, health service utilization, and mortality assessed at baseline, and 6 and 12 months.
During the 12-month follow-up, the mean number of potentially harmful medications decreased in the intervention wards [-0.43, 95% confidence interval (CI) -0.71 to -0.15] but remained constant in the control wards (+0.11, 95% CI -0.09 to +0.31) (P = .004, adjusted for age, sex, and comorbidities). HRQoL declined more slowly in the intervention wards (-0.038 (95% CI -0.054 to -0.022) than in the control wards (-0.072 (95% CI -0.089 to -0.055) (P = .005, adjusted for age, sex, and comorbidities). Residents of the intervention wards had significantly less hospital days (1.4 days/person/year, 95% CI 1.2-1.6) than in the control wards (2.3 days/person/year; 95% CI 2.1-2.7) (relative risk 0.60, 95% CI 0.49-0.75, P