Table 5

 Other unit features and outcome: odds ratio (95% CI) adjusted for relevant case mix and clustering effect

No of patientsAll patientsDischarged patients
Death <90 days of admissionInpatient deathReadmission <90 days of admissionLength of stay >7 daysLength of stay >14 days
*Binley’s Directory of NHS Management Spring 2004 Edition, published January 2004.8
Organisational score
    1–724091.001.001.001.001.00
    8–925221.02 (0.82 to 1.28)1.20 (0.90 to 1.62)1.04 (0.83 to 1.29)0.88 (0.73 to 1.06)1.00 (0.78 to 1.27)
    10–1425980.95 (0.76 to 1.19)1.16 (0.86 to 1.56)1.08 (0.87 to 1.35)0.80 (0.66 to 0.96)0.83 (0.66 to 1.06)
Catchment population (×103)
    61–23325341.001.001.001.001.00
    234–35926461.05 (0.84 to 1.31)1.15 (0.86 to 1.53)0.93 (0.75 to 1.16)1.01 (0.84 to 1.21)0.99 (0.78 to 1.26)
    >36023441.12 (0.90 to 1.41)1.18 (0.88 to 1.59)1.01 (0.81 to 1.25)0.97 (0.80 to 1.18)0.96 (0.75 to 1.23)
Patients admitted 2002
    111–35820921.001.001.001.001.00
    364–63825120.99 (0.78 to 1.24)0.97 (0.72 to 1.30)0.99 (0.79 to 1.23)0.87 (0.73 to 1.06)0.73 (0.57 to 0.93)
    >63826831.08 (0.86 to 1.36)1.14 (0.84 to 1.53)0.98 (0.78 to 1.22)1.00 (0.82 to 1.21)0.95 (0.75 to 1.22)
Bed numbers*
    128–46422151.001.001.001.001.00
    465–70226030.92 (0.74 to 1.16)0.98 (0.73 to 1.32)0.97 (0.78 to 1.21)0.94 (0.78 to 1.13)0.81 (0.64 to 1.04)
    >70227111.04 (0.83 to 1.30)1.00 (0.75 to 1.35)1.00 (0.80 to 1.24)0.84 (0.70 to 1.02)0.76 (0.60 to 0.97)
Star ratings (England)*
    0–117501.001.001.001.001.00
    220510.87 (0.68 to 1.12)0.69 (0.51 to 0.94)0.94 (0.75 to 1.19)1.09 (0.88 to 1.34)1.03 (0.78 to 1.36)
    320410.97 (0.75 to 1.24)0.83 (0.61 to 1.12)1.18 (0.93 to 1.49)0.91 (0.74 to 1.13)0.89 (0.67 to 1.19)