Cho & Yun, Adult patients Bed-to-nurse (RN) Bed-to-nurse In-hospital mortality Cross sectional Worsening ICU staffing In-hospital mortality 4b 2009 (n=6,957) with ratio ratios categorised & 30-day mortality, associated with stepwise and 30-day mortality acute stroke into 9 staffing decrease in the proportion admitted to ICUs grades (Grades of low 30-day mortality in 185 Korean Grade 1 (best) group. Hospitals with hospitals number of beds Grades 4 & 5 ICU staffing (No of ICUs not per nurse < 0.50, less likely to have high given as for Grade 9 (worst) hospital mortality than hospitals with ratio is 2.0. reference group (OR, 0.26; ≥ more than 1 ICU (Note, for the 95% CI, 0.09-0.80). Better results were analysis, staffing ICU staffing grades (1-3 aggregated) grades collapsed and 4 & 5) had lower into four groups: probability of classification 1-3, 4 & 5, 6 & 7, into high 30-day mortality and 8 & 9.) group. Dancer et al., Adult patients No intervention - None MRSA Retrospective No significant relationship None 4c 2006 (n=174) in one measured the observational between understaffing ICU in Scotland relationship study and MRSA acquisition between workload and number of nurses on shift and described understaffing as weeks staffed below the line of best fit Dang et al., patients No specific Low-intensity Cardiac Retrospective, Medium-intensity nurse Cardiac 3e 2002 (n=2,606) intervention, nurse staffing complications (acute longitudinal staffing: significant complications, undergoing used (NPR 1:3 on myocardial study association with cardiac Respiratory ≥ abdominal aortic ratios both day & night infarction, cardiac complications OR 1.78, complications, surgery admitted (NPR) Compared shifts); arrest, cardiac (1.16-2.72); other complications to ICU in 38 high-intensity nurse complications complications OR 1.74, hospitals in nurse staffing staffing (NPR (1.15-2.63); cardiac ≥ Maryland (NPR 1:2 on 1:3 on day or respiratory complications after a ≤ both day & night complications procedure OR 2.10,
Cho & Yun, 2009 Adult patients (n=6,957) with acute stroke admitted to ICUs in 185 Korean hospitals (No of ICUs not given as for hospitals with more than 1 ICU results were aggregated) Bed-to-nurse (RN) ratio Bed-to-nurse ratios categorised into 9 staffing grades (Grades Grade 1 (best) number of beds per nurse < 0.50, Grade 9 (worst) ratio is ≥ 2.0. (Note, for the analysis, staffing grades collapsed into four groups: 1-3, 4 & 5, 6 & 7, and 8 & 9.) In-hospital mortality & 30-day mortality, Cross sectional Worsening ICU staffing associated with stepwise decrease in the proportion of low 30-day mortality group. Hospitals with Grades 4 & 5 ICU staffing less likely to have high mortality than reference group (OR, 0.26; 95% CI, 0.09-0.80). Better ICU staffing grades (1-3 and 4 & 5) had lower probability of classification into high 30-day mortality group. In-hospital mortality and 30-day mortality 4b Dancer et al., 2006 Adult patients (n=174) in one ICU in Scotland No intervention - measured the relationship between workload and number of nurses on shift and described understaffing as weeks staffed below the line of best fit None MRSA Retrospective observational study No significant relationship between understaffing and MRSA acquisition None 4c Dang et al., 2002 patients (n=2,606) undergoing abdominal aortic surgery admitted to ICU in 38 hospitals in Maryland No specific intervention, used ratios (NPR) Compared high-intensity nurse staffing (NPR ≤ 1:2 on both day & night Low-intensity nurse staffing (NPR ≥ 1:3 on both day & night shifts); nurse staffing (NPR ≥ 1:3 on day or Cardiac complications (acute myocardial infarction, cardiac arrest, cardiac complications respiratory complications Retrospective, longitudinal study Medium-intensity nurse staffing: significant association with cardiac complications OR 1.78, (1.16-2.72); other complications OR 1.74, (1.15-2.63); cardiac complications after a procedure OR 2.10, Cardiac complications, Respiratory complications, complications 3e hospital
1-s2.0-S1322769617300227-mmc1.docx