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Table 3 Multilevel mixed-effects Poisson regression modelling with Incident Rate Ratios (IRR) for Emergency Department (ED) Presentations and Hospital Admissions unadjusted and adjusted for time period and demographics

From: Impact of an integrated community-based model of care for older people with complex conditions on hospital emergency presentations and admissions: a step-wedged cluster randomized trial

  Model 1 Model 2 Model 3
IRR (95% CI) P IRR (95% CI) P IRR (95% CI) P
ED Presentations
Intervention Status 0.91 (0.56–1.47) 0.697 1.35 (0.57–3.17) 0.498 1.17 (0.52–2.66) 0.703
Time Period
1 (ref)          
2     0.88 (0.46–1.70) 0.709 0.91 (0.47–1.76) 0.787
3     0.58 (0.22–1.51) 0.263 0.64 (0.25–1.66) 0.361
4     0.60 (0.20–1.79) 0.361 0.69 (0.24–1.97) 0.484
Indigenous Status        2.27 (0.63–8.14) 0.208
Age        0.97 (0.91–1.04) 0.417
Gender        0.74 (0.33–1.63) 0.451
Hospital Admissions
Intervention Status 0.93 (0.58–1.47) 0.743 0.62 (0.28–1.40) 0.253 0.57 (0.26–1.27) 0.167
Time Period
1 (ref)          
2     1.23 (0.67–2.27) 0.499 1.26 (0.68–2.32) 0.457
3     1.48 (0.64–3.46) 0.36 1.59 (0.68–3.69) 0.283
4     1.90 (0.68–5.34) 0.224 2.07 (0.74–5.75) 0.165
Indigenous Status        2.41 (0.53–10.87) 0.252
Age        0.97 (0.90–1.05) 0.443
Gender        0.80 (0.32–1.99) 0.627
  1. Model 1 – Unadjusted, Model 2 – Adjusted for time period, Model 3 – Adjusted for time period, Indigenous status, age and gender