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Table 3 Poisson regression, MIH program (n = 73)

From: EMS utilization predictors in a Mobile Integrated Health (MIH) program

911 Transports IRR Std. Err z P >|z| 95% CI
Age category
19–33 (ref)       
34–48 Years 1.374 0.386 1.13 0.258 0.793 2.382
49–64 Years 0.548 0.150 − 2.19 0.028 0.320 0.938
65–78 Years 0.587 0.157 − 2.00 0.046 0.348 0.990
79 + *** 0.094 0.047 − 4.74 0.000 0.035 0.249
Marital status
Single (ref)       
Married*** 0.286 0.068 − 5.30 0.000 0.180 0.454
Divorced** 0.441 0.120 − 3.02 0.003 0.259 0.750
Widowed*** 10.206 5.675 4.18 0.000 3.432 30.351
Sex
Female (ref)       
Male*** 2.412 0.335 6.33 0.000 1.837 3.168
Race
White (ref)       
Asian 0.000 0.020 − 0.01 0.988 0.000  
Black** 1.998 0.458 3.02 0.002 1.276 3.131
Hispanic*** 3.675 1.353 3.53 0.000 1.785 7.564
Fall risk category
High risk 1.700 0.316 2.86 0.004 1.181 2.447
Persons living in the residence
1 (ref)       
2 0.966 0.174 − 0.19 0.846 0.678 1.375
3* 1.620 0.377 2.08 0.038 1.027 2.556
4** 3.509 1.555 2.83 0.005 1.472 8.365
6*** 4.903 1.668 4.67 0.000 2.517 9.552
7 2.105 1.268 1.24 0.217 0.646 6.855
Asthma/COPD
Yes*** 4.346 0.820 7.78 0.000 3.002 6.291
Hypertension
Yes 0.840 0.182 − 0.81 0.419 0.549 1.284
High cholesterol
Yes** 1.749 0.346 2.83 0.005 1.187 2.578
CHF
Yes*** 0.454 0.081 − 4.42 0.000 0.320 0.644
CVA/Stroke
Yes* 1.443 0.262 2.02 0.044 1.010 2.060
Psychiatric and/or Behavioral
Yes*** 1.833 0.298 3.73 0.000 1.333 2.522
Diabetes
Yes*** 1.940 0.274 4.69 0.000 1.471 2.560
Compliance with medications
Never (ref)       
Sometimes** 1.949 0.494 2.63 0.008 1.186 3.203
Always 1.505 0.332 1.85 0.064 0.977 2.320
Number of medications*** 1.045 0.013 3.68 0.000 1.021 1.071
Primary insurance
Private (ref)       
Medicaid 0.599 0.179 − 1.72 0.086 0.334 1.075
Medicare** 2.192 0.554 3.11 0.002 1.336 3.597
Travel times
0–9 min (ref)       
10–19 min*** 5.934 1.684 6.27 0.000 3.402 10.350
20–29 min*** 3.669 1.082 4.41 0.000 2.059 6.539
30–39 min*** 8.748 3.275 5.79 0.000 4.200 18.221
40 min and longer*** 15.094 5.664 7.23 0.000 7.234 31.495
Dual eligible
Yes*** 0.295 0.072 − 5.03 0.000 0.184 0.475
_cons 0.000 0.000 − 30.29 0.000 0.000 0.000
logPop 1 (offset)     
  1. *Significance at p < .05; ** significance at p < .01; *** significance at p < .001