Table 3

Results of multilevel logistic regression with random intercept: injury type by SAQ domain

ModelFalls, n=290Decubitus ulcer, n=105PE/DVT, n=167Nurse injury, n=78
OR95% CIOR95% CIOR95% CIOR95% CI
Safety (per 10 unit change)0.830.46 to 1.530.52*0.29 to 0.920.640.31 to 1.350.55*0.32 to 0.97
 Nursing hours per patient day (per 1 hour change)0.91*0.83 to 1.00.930.85 to 1.021.070.98 to 1.171.000.94 to 1.1
 Turnover rate (per 10% change)0.830.68 to 1.020.680.37 to 1.231.150.96 to 1.381.660.98 to 2.8
 Complexity (high/low)3.432.64 to 4.48124.2017.2 to 896.011.637.37 to 18.38
 σ21.090.691.380.46
 ICC0.250.170.300.12
Morale/Job satisfaction (per 10 unit change)1.100.77 to 1.570.780.54 to 1.10.870.55 to 1.380.720.51 to 1.03
 Nursing hours per patient day (per 1 hour change)0.91*0.83 to 0.990.940.85 to 1.041.080.98 to 1.191.010.95 to 1.08
 Turnover rate (per 10% change)0.850.69 to 1.040.680.37 to 1.241.160.96 to 1.401.640.96 to 2.78
 Complexity (high/low)3.462.66 to 4.51126.2017.5 to 910.111.707.40 to 18.5
 σ21.070.831.430.52
 ICC0.240.200.300.14
Teamwork (per 10 unit change)0.860.55 to 1.340.56**0.38 to 0.820.650.37 to 1.140.60*0.41 to 0.89
 Nursing hours per patient day (per 1 hour change)0.920.84 to 1.000.970.89 to 1.061.090.99 to 1.191.020.96 to 1.08
 Turnover rate (per 10% change)0.840.69 to 1.020.660.35 to 1.251.150.97 to 1.371.68*1.0 to 2.84
 Complexity (high/low)3.432.64 to 4.48124.4017.3 to 897.011.607.34 to 18.3
 σ21.090.501.310.38
 ICC0.250.130.290.10
Working conditions (per 10 unit change)0.980.55 to 1.750.660.37 to 1.170.790.39 to 1.590.900.50 to 1.63
 Nursing hours per patient day (per 1 hour change)0.91*0.83 to 0.980.940.85 to 1.041.080.98 to 1.181.000.93 to 1.07
 Turnover rate (per 10% change)0.840.69 to 1.030.730.43 to 1.231.180.96 to 1.411.670.99 to 2.82
 Complexity (high/low)3.452.65 to 4.50126.1017.5 to 909.611.707.4 to 18.48
 σ21.090.861.440.68
 ICC0.250.210.300.17
Perceptions of management (per 10 unit change)0.980.66 to 1.470.830.54 to 1.270.780.49 to 1.250.890.59 to 1.32
 Nursing hours per patient day (per 1 hour change)0.91*0.83 to 0.990.940.85 to 1.041.080.99 to 1.181.000.94 to 1.07
 Turnover rate (per 10% change)0.840.69 to 1.030.680.37 to 1.261.140.95 to 1.371.650.98 to 2.76
 Complexity (high/low)3.452.65 to 4.50126.8017.6 to 914.611.687.40 to 18.45
 σ21.090.941.350.66
 ICC0.250.220.290.17
  • *p<0.05, **p<0.01.

  • σ2, variance of random effect for nursing unit; ICC, intraclass correlation coefficient; PE/DVT, pulmonary embolism/deep-vein thrombosis; SAQ, Safety Attitudes Questionnaire.