Table 4.
Univariate models and multivariate models for risk factors predicting 12-month unfavourable cerebral performance status, n = 980a
| Univariate model | Multivariate model | |||
|---|---|---|---|---|
| Variable | OR (95 % CI) | p | OR (95 % CI) | p |
| Age | ||||
| Young (< 75y) | 1 | 1 | ||
| Elderly ( > = 75) | 3.09 (2.19–4.36) | < 0.001 | 3.15 (2.04–4.86) | < 0.001 |
| Pre-admission functional status | ||||
| Independent | 1 | 1 | ||
| Dependent | 4.07 (2.48–6.67) | < 0.001 | 3.00 (1.62–5.57) | < 0.001 |
| Initial CA-rhythm | ||||
| Non-shockable | 1 | 1 | ||
| Shockable | 0.32 (0.25–0.41) | < 0.001 | 0.43 (0.31–0.61) | < 0.001 |
| Location of arrest | ||||
| OHCA | 1 | 1 | ||
| IHCA | 1.78 (1.37–2.30) | < 0.001 | 1.50 (1.01–2.25) | 0.046 |
| ICUCA | 2.24 (1.47–3.41) | < 0.001 | 2.82(1.45–5.39) | 0.002 |
| Witnessed arrest (not witnessed = 1) | 0.47 (0.31–0.70) | < 0.001 | 0.71(0.44–1.16) | 0.171 |
| Time to ROSC in 10-minute intervals | 1.15 (1.02–1.29) | 0.020 | 1.61 (1.34–1.94) | < 0.001 |
| APACHE II-score excluding age pointsb | 2.51 (2.13–2.95) | < 0.001 | 1.97 (1.61–2.40) | < 0.001 |
| Total TISS-pointsb | 0.99 (0.98-1.00) | 0.005 | 0.99 (0.98-1.00) | 0.011 |
a A total of 980 patients were included. 94 patients had missing CPC, 60 patients had missing functional status, 68 patients had missing initial rhythm, 24 patients had missing if the arrest was witnessed, 118 patients had missing time to ROSC, 1 patient had missing APACHE II-score.
b Each step increases the variable by 10