Table 3

Negative binomial regression with bootstrapped SEs (1000 replications) without stratification for unscheduled admissions and ED visits*

VariableCoef.SEZ-statP value(95% CI)
Intervention−0.08820.0433−2.040.042−0.1731 to −0.0033
After−0.16760.0634−2.640.008−0.2919 to −0.0433
Intervention*after−0.13520.0790−1.710.087−0.2901 to 0.0197
Female−0.00470.0387−0.120.902−0.0806 to 0.0711
Age 16–240.26960.11942.260.0240.0355 to 0.5037
Age 25–340.18210.10751.690.09−0.0286 to 0.3928
Age 35–440.14360.11131.290.197−0.0745 to 0.3616
Age 45–54−0.12440.1023−1.220.224−0.3248 to 0.0761
Age 55–64−0.16260.1066−1.520.127−0.3716 to 0.0464
Age 65–74−0.07490.1082−0.690.489−0.2869 to 0.1371
Age 75 upReference group
SIMD quintile 1−0.15730.0726−2.170.03−0.2996 to −0.0151
SIMD quintile 2−0.00170.0723−0.020.981−0.1434 to 0.1400
SIMD quintile 3−0.02210.0812−0.270.786−0.1813 to 0.1372
SIMD quintile 40.09160.08641.060.289−0.0778 to 0.2610
SIMD quintile 5Reference group
SPARRA score at entry0.02540.001517.3500.0226 to 0.0283
Intercept−0.31250.1685−1.850.064−0.6427 to 0.0177
  • Number of obs=2654.

  • Log likelihood=−6247.4205 Pseudo R2=0.0455.

  • *The results in tables 3 and 4 allow for multiple admissions per day in order to reflect resources and staff time used with each patient. However, the regression results based on number of admissions capped at one admission per day are both qualitatively and quantitatively similar to tables 3 and 4.

  • ED, emergency department; SIMD, Scottish Index of Multiple Deprivation; SPARRA, Scottish Patients at Risk of Readmission and Admission.