Table 20Relative risk of patient outcomes corresponding to an increase by 1% in licensed nurse hours

OutcomesRelative Risk95% CI
Author (patients)
Failure to rescue
Needleman27 (medical)0.810.66; 1.00
Needleman27 (surgical)0.730.49; 1.09
Needleman27 (medical)0.900.80; 1.01
Needleman27 (surgical)0.820.70; 0.96
Needleman27 (medical)0.580.40; 0.86
Needleman27 (medical)0.690.50; 0.95
Needleman27 (surgical)0.450.22; 0.92
Needleman27 (surgical)0.540.30; 0.99
Needleman27 (medical)0.800.64; 0.97
Needleman27 (surgical)0.810.68; 0.94
Needleman27 (surgical)0.700.37; 1.03
Needleman27 (surgical)0.720.42; 1.01
Needleman7 (medical)0.900.80; 1.00
Needleman27 (medical)0.810.64; 0.99
Needleman27 (medical)0.810.66; 1.00
Cheung63 (medical)1.001.00; 1.00
Mortality
Berney30 (surgical)0.970.95; 0.98
Needleman27 (medical)0.900.74; 1.09
Needleman27 (surgical)0.990.67; 1.47
Needleman27 (medical)0.980.90; 1.08
Needleman27 (surgical)0.880.75; 1.03
Needleman27 (medical)0.910.65; 1.27
Needleman27 (medical)0.890.68; 1.16
Needleman27 (surgical)0.760.34; 1.69
Needleman27 (surgical)0.870.47; 1.61
Needleman27 (medical)0.900.74; 1.09
CPR
Needleman27 (surgical)0.590.42; 0.76
Needleman27 (surgical)0.420.10; 0.74
Needleman27 (surgical)0.600.19; 1.00
Needleman27 (medical)0.660.48; 0.85
Needleman27 (medical)0.400.18; 0.63
Pulmonary failure
Needleman27 (surgical)1.100.63; 1.92
Needleman27 (surgical)1.210.99; 1.47
Needleman27 (surgical)1.000.39; 2.60
Needleman27 (surgical)1.020.45; 2.32
Shock
Needleman27 (medical)0.460.27; 0.81
Needleman27 (surgical)0.540.28; 1.04
Needleman27 (medical)0.660.50; 0.87
Needleman27 (surgical)0.590.44; 0.78
Needleman27 (medical)0.200.08; 0.53
Needleman27 (medical)0.400.19; 0.86
Needleman27 (surgical)0.220.09; 0.57
Needleman27 (surgical)0.270.12; 0.61
Needleman27 (medical)0.490.21; 0.77
Needleman27 (surgical)0.590.42; 0.76
Needleman27 (surgical)0.420.10; 0.74
Needleman27 (surgical)0.600.19; 1.00
Needleman27 (medical)0.660.48; 0.85
Needleman27 (medical)0.400.18; 0.63
Needleman27 (medical)0.460.27; 0.81
Nosocomial Infection
Cheung63 (medical)1.001.00; 1.00
Pneumonia
Needleman27 (medical)0.600.44; 0.80
Needleman27 (surgical)0.560.31; 1.01
Needleman27 (medical)0.830.71; 0.98
Needleman27 (surgical)0.940.76; 1.16
Needleman27 (medical)0.520.32; 0.87
Needleman27 (medical)0.690.47; 1.03
Needleman27 (surgical)0.660.26; 1.69
Needleman27 (surgical)0.790.37; 1.71
Needleman27 (medical)0.610.42; 0.79
Needleman27 (surgical)0.940.74; 1.13
Needleman27 (surgical)0.360.12; 0.59
Needleman27 (surgical)0.520.20; 0.84
Needleman27 (medical)0.830.70; 0.96
Needleman27 (medical)0.590.39; 0.78
Needleman27 (medical)0.590.44; 0.80
Surgical wound infection
Needleman27 (surgical)1.911.34; 2.48
Needleman27 (surgical)0.930.24; 1.62
Needleman27 (surgical)1.330.53; 2.13
Sepsis
Needleman27 (medical)1.390.85; 1.94
Needleman27 (surgical)1.100.85; 1.35
Needleman27 (surgical)0.860.30; 1.42
Needleman27 (surgical)1.110.47; 1.74
Needleman27 (medical)1.240.97; 1.51
Needleman27 (medical)1.110.65; 1.56
Needleman27 (medical)1.011.00; 1.01
Berney30 (surgical)1.011.00; 1.01
Urinary tract infection
Needleman27 (medical)0.480.38; 0.61
Needleman27 (surgical)0.670.46; 0.98
Needleman27 (medical)0.770.68; 0.86
Needleman27 (surgical)0.890.75; 1.07
Needleman27 (medical)0.440.28; 0.70
Needleman27 (medical)0.600.41; 0.87
Needleman27 (surgical)0.640.30; 1.37
Needleman27 (medical)0.490.37 0.61
Needleman27 (surgical)0.880.71; 1.04
Needleman27 (surgical)0.680.40; 0.95
Needleman27 (surgical)0.590.36; 0.82
Needleman27 (medical)0.760.67; 0.85
Needleman27 (medical)0.540.41; 0.66
Needleman27 (medical)0.480.38; 0.61
Berney30 (medical)1.000.99; 1.00
Berney30 (surgical)1.000.99; 1.00
Complications
Needleman27 (surgical)2.431.00; 5.93
Needleman27 (medical)1.861.32; 2.62
Needleman27 (surgical)1.621.02; 2.56
Needleman27 (medical)1.440.39; 5.32
Needleman27 (medical)1.040.32; 3.35
Needleman27 (surgical)4.130.53; 32.25
Needleman27 (surgical)1.830.32; 10.49
Gastrointestinal bleeding
Needleman27 (medical)0.660.46; 0.96
Needleman27 (surgical)0.570.28; 1.15
Needleman27 (medical)0.960.79; 1.16
Needleman27 (surgical)0.780.59; 1.03
Needleman27 (medical)0.830.40; 1.72
Needleman27 (medical)0.870.48; 1.58
Needleman27 (surgical)0.720.22; 2.37
Needleman27 (surgical)0.630.23; 1.71
Needleman27 (surgical)0.770.56; 0.98
Needleman27 (surgical)0.400.07; 0.74
Needleman27 (surgical)0.530.15; 0.90
Needleman27 (medical)0.960.77; 1.15
Needleman27 (medical)0.680.42; 0.95
Needleman27 (medical)0.660.45; 0.96
Berney30 (medical)1.001.00; 1.01
Berney30 (surgical)1.011.00; 1.01
Pressure ulcers
Cheung63 (medical)1.001.00; 1.00
Needleman27 (medical)0.730.49; 1.08
Needleman27 (surgical)1.380.69; 2.78
Needleman27 (surgical)0.940.74; 1.19
Needleman27 (medical)0.350.15; 0.79
Needleman27 (medical)0.550.28; 1.06
Needleman27 (surgical)0.680.18; 2.52
Needleman27 (surgical)0.710.26; 1.94
Needleman27 (medical)0.770.46; 1.07
Needleman27 (surgical)0.900.68; 1.12
Needleman27 (surgical)0.810.14; 1.49
Needleman27 (surgical)0.830.24; 1.41
Needleman27 (medical)0.890.70; 1.09
Needleman27 (medical)0.710.40; 1.02
Thrombosis
Needleman27 (medical)1.390.92; 2.11
Needleman27 (surgical)1.290.66; 2.54
Needleman27 (medical)1.281.02; 1.60
Needleman27 (surgical)1.521.12; 2.07
Needleman27 (medical)1.970.84; 4.58
Needleman27 (Medical)1.550.78; 3.07
Needleman27 (surgical)0.030.00; 0.66
Needleman27 (surgical)1.111.04; 1.18

From: 3, Results

Cover of Nurse Staffing and Quality of Patient Care
Nurse Staffing and Quality of Patient Care.
Evidence Reports/Technology Assessments, No. 151.
Kane RL, Shamliyan T, Mueller C, et al.

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