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Table 2 Mortality rates and involuntary early retirement in patients admitted to the stroke unit
| Number of persons under observation in each group (GEMS/HEMS) | Number of events | Total PYR | GEMS IR (per 100 PYR) | HEMS IR (per 100 PYR) | Unadjusted IRR (95% CI) | P value | Adjusteda, b, cIRR (95% CI) | P value | |
|---|---|---|---|---|---|---|---|---|---|
| Mortality rates ( n = 1068) | 916/152 | 258/46 | 2854/474 | 9.04 (7.94–10.14) | 9.71 (6.91–12.52) | 1.09 (0.79–1.49) | 0.60 | 1.09 (0.79–1.49)a | 0.60 |
| Patients diagnosed with stroke (n = 702) | 587/115 | 187/40 | 1773/341 | 10.55 (9.04–12.06) | 11.73 (8.10–15.37) | 1.12 (0.79–1.57) | 0.53 | 1.07 (0.75–1.53)b | 0.72 |
| Patients who underwent thrombolysis (n = 388) | 330/58 | 96/16 | 1031/189 | 9.31 (7.45–11.17) | 8.48 (4.33–12.64) | 0.92 (0.54–1.57) | 0.92 | 0.89 (0.50–1.56)c | 0.68 |
| Mortality rates with transport distance >63 km ( n = 539) | 441/98 | 114/36 | 1375/289 | 8.29 (6.77–9.81) | 12.44 (8.37–16.50) | 1.49 (1.02–2.16) | 0.04 | 1.36 (0.93–1.98)a | 0.11 |
| Patients diagnosed with stroke (n = 362) | 287/75 | 88/32 | 864/206 | 10.18 (8.06–12.31) | 15.51 (10.13–20.88) | 1.49 (0.99–2.24) | 0.05 | 1.29 (0.84–1.99)b | 0.25 |
| Patients who underwent thrombolysis (n = 202) | 167/35 | 43/12 | 541/113 | 7.95 (5.57–10.33) | 10.64 (4.62–16.66) | 1.33 (0.70–2.52) | 0.39 | 1.03 (0.51–2.07)c | 0.94 |
| Mortality rates in directly referred patients | |||||||||
| Patients who underwent thrombolysis (n = 332) | 277/55 | 79/16 | 871/174 | 9.07 (7.07–11.07) | 9.19 (4.69–13.70) | 1.02 (0.60–1.75) | 0.94 | 0.97 (0.55–1.73)c | 0.92 |
| Involuntary early retirement | |||||||||
| Patients diagnosed with stroke (n = 101) | 89/12 | 20/3 | 287/40 | 6.97 (3.92–10.03) | 7.58 (0.00–16.16) | 1.12 (0.33–3.77) | 0.85 | 1.19 (0.27–5.26)b | 0.81 |
| Directly referred patients who underwent thrombolysis (n = 44) | 37/7 | 8/0 | 123/26 | 6.48 (1.99–10.98) | 0.00 (−) | − | − | − | − |
