The NEWS risk classification in the different timespans
| Timespans | Patients with IHCA (cases) | Patients without IHCA (controls) | Cases vs controls, p-value |
|---|---|---|---|
| NEWS risk classification 24–18 hours before IHCA: | n=56 | n=112 | <0.001 |
| Low, n (%) | 34 (61) | 101 (90) | |
| Medium, n (%) | 9 (16) | 8 (7) | |
| High, n (%) | 13 (23) | 3 (3) | |
| NEWS risk classification 18–12 hours before IHCA: | n=63 | n=126 | <0.001 |
| Low, n (%) | 33 (52) | 107 (85) | |
| Medium, n (%) | 19 (30) | 15 (12) | |
| High, n (%) | 11 (18) | 4 (3) | |
| p-value between timespan 24–18 vs 18–12 hours | 0.819 | n/a | |
| NEWS risk classification 12–6 hours before IHCA: | n=67 | n=134 | <0.001 |
| Low, n (%) | 36 (54) | 109 (81) | |
| Medium, n (%) | 15 (22) | 21 (16) | |
| High, n (%) | 16 (24) | 4 (3) | |
| p-value between timespan 18–12 vs 12–6 hours | 0.658 | n/a | |
| NEWS risk classification 6–0 hours before IHCA: | n=62 | n=124 | <0.001 |
| Low, n (%) | 24 (39) | 100 (81) | |
| Medium, n (%) | 10 (16) | 16 (13) | |
| High, n (%) | 28 (45) | 8 (6) | |
| p-value between timespan 12–6 vs 6–0 hours | 0.048 | n/a |
IHCA = in-hospital cardiac arrest; n/a = not applicable; NEWS = National Early Warning Score.