Table 2

Adjusted OR and average relative risks of admission by ED and inpatient occupancy quintiles

TermQuintileAdjusted OR95% CIAdjusted average relative risks95% CI
ED occupancy quintiles1—very low occupancy1.0601.042 to 1.0771.0391.028 to 1.050
2—below average occupancy1.0130.999 to 1.0271.0090.999 to 1.018
3—average occupancy (ref)1.0001.000
4—above average occupancy0.9830.969 to 0.9970.9880.979 to 0.998
5—very high occupancy0.9520.938 to 0.9660.9670.958 to 0.977
Emergency inpatient occupancy quintiles1—very low occupancy0.9880.974 to 1.0020.9920.982 to 1.001
2—below average occupancy1.0080.994 to 1.0221.0050.996 to 1.014
3—average occupancy (ref)1.0001.000
4—above average occupancy0.9960.983 to 1.0100.9980.988 to 1.007
5—very high occupancy0.9850.970 to 0.9990.9900.980 to 0.999
Maternity inpatient occupancy quintiles1—very low occupancy0.9910.977 to 1.0050.9940.985 to 1.003
2—below average occupancy1.0030.989 to 1.0171.0020.993 to 1.011
3—average occupancy (ref)1.0001.000
4—above average occupancy1.0070.994 to 1.0221.0050.996 to 1.014
5—very high occupancy1.0151.001 to 1.0301.0101.001 to 1.020
Overnight elective inpatient occupancy quintiles1—very low occupancy1.0020.986 to 1.0171.0010.991 to 1.012
2—below average occupancy1.0010.987 to 1.0161.0010.992 to 1.010
3—average occupancy (ref)1.0001.000
4—above average occupancy0.9900.976 to 1.0040.9930.984 to 1.003
5—very high occupancy1.0161.001 to 1.0321.0111.001 to 1.021
Elective day-case inpatient occupancy quintiles1—very low occupancy0.9570.941 to 0.9740.9710.959 to 0.982
2—below average occupancy0.9640.949 to 0.9800.9760.965 to 0.987
3—average occupancy (ref)1.0001.000
4—above average occupancy1.0291.012 to 1.0461.0191.008 to 1.030
5—very high occupancy1.0581.038 to 1.0781.0381.025 to 1.051