Table 4

Association between ward level staffing and standardised mortality: 31 trusts

UnadjustedAdjusted
Risk ratioL95% CLU95% CLp ValueRisk ratioL95% CLU95% CLp Value
Medical
 Non-teaching trust1.121.081.15<0.01
 Beds (thousands)1.081.041.13<0.01
 Patients per RN (χ2, df, p value)(59.831, 3df, <0.001)(12.524, 3df, <0.001)
  ≤60.800.760.85<0.0010.890.830.950.001
  6.01–8.000.920.870.96<0.0010.960.911.010.14
  8.01–10.000.910.870.96<0.0010.960.911.010.11
  ≥101.001.00
 Patients per HCSW1.011.001.020.0011.000.991.010.92
 Occupied beds per FTE Doctor1.241.191.28<0.0011.121.061.17<0.001
Surgical
 Non-teaching trust1.091.031.17<0.01
 Beds (thousands)1.151.071.24<0.01
 Patients per RN (χ2, df, p value)(11.604, 3df, 0.009)(3.290, 3df, 0.349)
  ≤60.830.691.000.0490.890.731.080.23
  6.01–8.000.900.751.080.260.900.751.090.30
  8.01–10.000.900.751.080.260.870.731.050.16
  ≥101.001.00
 Patients per HCSW1.021.011.030.0021.011.001.030.053
 Occupied beds per FTE Doctor1.221.131.31<0.0011.151.031.280.010
  • HCSW, healthcare support worker; FTE, full-time equivalent; RN, registered nurse.