Table 2 |
||||
|
Results of the multivariate ordered logistic (1) and logistic (2) regression models |
||||
|
Variable |
Coeff. |
SE |
z |
p |
|
|
||||
|
Model 1. Number of Emergency Department visits in the previous year |
||||
|
Log likelihood = -1347.38, χ2 = 99.01 (6 df), p < 0.0001 |
||||
|
On pharmacological treatment |
0.51 |
0.12 |
4.13 |
< 0.001 |
|
Comorbidity index |
0.17 |
0.07 |
2.48 |
0.013 |
|
Distance from patients' home to hospital: |
||||
|
> 10 Km* |
- |
- |
- |
- |
|
< 1 Km |
0.27 |
0.11 |
2.49 |
0.013 |
|
Educational level |
-0.03 |
0.15 |
-1.82 |
0.069 |
|
Employment status |
-0.2 |
0.11 |
-1.76 |
0.079 |
|
Basic Activities of Daily Living score |
-0.09 |
0.05 |
-1.71 |
0.088 |
|
|
||||
|
Variable |
OR |
SE |
95% CI |
p |
|
|
||||
|
Model 2. Index visit as a re-utilization of the Emergency Department after 72 hours from a previous Emergency Department visit |
||||
|
Log likelihood = -451.26, χ2 = 284.73 (15 df), p < 0.0001 |
||||
|
Number of Emergency Department visits in the previous year |
5.0 |
0.65 |
3.89–6.45 |
< 0.001 |
|
Referral |
3.12 |
0.86 |
1.81–5.35 |
< 0.001 |
|
Duration of presenting problem prior to arrive at the Emergency Department: |
||||
|
< 1 hour* |
1.0 |
|||
|
1–24 hours |
1.91 |
0.42 |
1.25–2.94 |
0.003 |
|
> 24 hours |
2.06 |
0.51 |
1.27–3.37 |
0.004 |
|
On pharmacological treatment |
0.56 |
0.13 |
0.36–0.86 |
0.009 |
|
Mode of transportation to the Emergency Department: |
||||
|
Ambulance* |
1.0 |
|||
|
Car driven by other person |
3.22 |
1.61 |
1.21–8.58 |
0.019 |
|
Car driven by patient/On foot |
2.54 |
1.36 |
0.89–7.24 |
0.08 |
|
Emergency Department discharge diagnosis |
1.56 |
0.3 |
1.07–2.28 |
0.022 |
|
Hospital admission after Emergency Department visit |
1.82 |
0.51 |
1.06–3.14 |
0.031 |
|
Age |
0.99 |
0.01 |
0.98–0.99 |
0.039 |
|
Therapeutic procedure(s) received at the Emergency Department |
0.69 |
0.14 |
0.47–1.01 |
0.057 |
|
Physician consultation(s) received at the Emergency Department |
0.72 |
0.14 |
0.49–1.07 |
0.1 |
|
Day of the week of attending the Emergency Department |
1.42 |
0.34 |
0.89–2.26 |
0.14 |
|
Prescription of therapy |
0.8 |
0.15 |
0.55–1.16 |
0.24 |
|
Investigation(s) received at the Emergency Department |
0.82 |
0.16 |
0.57–1.19 |
0.31 |
|
|
||||
|
*Reference category |
||||
|
Di Giuseppe et al. BMC Health Services Research 2008 8:97 doi:10.1186/1472-6963-8-97 |
||||
