Size of unit |
Mean number of births per year | 0.000 | 0.21 | 0.026 | 0.000 | 0.64 | 0.004 |
Organisation and availability of facilities |
Mean number of consultant O&G sessions on labour ward/week | 0.066 | 0.45 | 0.010 | 0.095 | 0.10 | 0.046 |
Mean number of consultant anaesthetic sessions on labour ward/week | 0.069 | 0.44 | 0.010 | 0.041 | 0.51 | 0.008 |
Delivery beds per 1000 deliveries | 0.142 | 0.48 | 0.009 | 0.250 | 0.063 | 0.059 |
NICU cots per 1000 births | −0.378 | 0.006 | 0.123 | 0.145 | 0.13 | 0.039 |
SCBU and NICU cots per 1000 births | −0.153 | 0.04 | 0.070 | 0.071 | 0.17 | 0.033 |
Intervention rates |
SVDs per 100 births | 0.088 | 0.002 | 0.148 | −0.014 | 0.49 | 0.008 |
Vaginal births per 100 breeches | 0.018 | 0.19 | 0.029 | 0.005 | 0.59 | 0.005 |
Emergency CS per 100 breeches | 0.003 | 0.820 | 0.001 | −0.007 | 0.35 | 0.020 |
Elective CS per 100 breeches | −0.017 | 0.16 | 0.044 | −0.005 | 0.49 | 0.011 |
CS per 100 deliveries | −0.091 | 0.026 | 0.083 | 0.047 | 0.09 | 0.048 |
Forceps per 100 births | −0.176 | 0.035 | 0.074 | −0.038 | 0.51 | 0.008 |
Vacuum deliveries per 100 births | 0.089 | 0.20 | 0.029 | 0.042 | 0.37 | 0.014 |
Instrumental deliveries per 100 births | −0.153 | 0.008 | 0.114 | 0.013 | 0.76 | 0.002 |
Inductions per 100 deliveries | −0.02 | 0.59 | 0.005 | 0.009 | 0.71 | 0.003 |
Epidurals per 100 deliveries | −0.036 | 0.001 | 0.167 | 0.002 | 0.82 | 0.001 |
Epidurals for labour per 100 deliveries | −0.042 | 0.005 | 0.130 | −0.001 | 0.93 | 0.000 |
GAs per 100 CSs | 0.032 | 0.002 | 0.161 | −0.008 | 0.27 | 0.021 |
Staffing levels |
Consultant paediatricians per 1000 births | −0.074 | 0.81 | 0.001 | −0.294 | 0.17 | 0.035 |
Junior paediatricians per 1000 births | −0.165 | 0.30 | 0.020 | −0.033 | 0.77 | 0.002 |
Consultant O&Gs per 1000 deliveries | −0.681 | 0.006 | 0.130 | −0.045 | 0.80 | 0.001 |
Junior O&G per 1000 deliveries | −0.097 | 0.16 | 0.036 | 0.011 | 0.82 | 0.001 |
Midwives per 1000 deliveries | 0.012 | 0.65 | 0.004 | −0.012 | 0.50 | 0.010 |
Parental factors |
Percentage of nulliparous (married) women | −0.079 | 0.037 | 0.069 | −0.17 | 0.51 | 0.007 |
Percentage births to teenage mothers | 0.183 | 0.038 | 0.067 | 0.050 | 0.39 | 0.012 |
Percentage births to mothers >40 | −0.366 | 0.08 | 0.048 | 0.053 | 0.70 | 0.002 |
Percentage births to fathers of manual or “other” class | 0.039 | 0.008 | 0.108 | 0.009 | 0.34 | 0.015 |
Mean Townsend score | 0.083 | 0.22 | 0.024 | 0.106 | 0.016 | 0.090 |
Percentage of babies from multiple births | −0.485 | 0.001 | 0.173 | −0.062 | 0.53 | 0.006 |