Intervention region (n = 3710) | Reference region (n = 7836) | |||
---|---|---|---|---|
Relative risk compared to ref. [95% CI] | Risk difference compared to ref. [95% CI] | Relative risk compared to ref. [95% CI] | Risk difference compared to ref. [95% CI] | |
Age group | ||||
0–2 months | 0.3 [0.2;0.4] | − 0.35 [− 0.40; − 0.30] | 0.1 [0.0;0.1] | − 0.32 [− 0.34; − 0.29] |
3–11 months | 0.6 [0.5;0.8] | − 0.18 [− 0.23; − 0.12] | 0.2 [0.2;0.3] | − 0.26 [− 0.29; − 0.24] |
1–2 years | 0.6 [0.6;0.7] | − 0.18 [− 0.22; − 0.14] | 0.3 [0.3;0.4] | − 0.23 [− 0.25; − 0.21] |
3–7 years | 0.9 [0.8;1.0] | − 0.04 [− 0.09; 0.00] | 0.6 [0.5;0.6] | − 0.15 [− 0.18; − 0.13] |
8–17 years (= ref) | 1 | – | 1 | – |
Missing data, n (%) | 0 (0.0%) | 0 (0.0%) | ||
Sex | ||||
Female | 1.0 [1.0;1.1] | 0.01 [− 0.02; 0.04] | 1.1 [1.0;1.1] | 0.01 [− 0.01; 0.03] |
Male (= ref) | 1 | – | 1 | – |
Missing data, n (%) | 35 (0.9%) | 65 (0.8%) | ||
EMS care timea | ||||
0–15 min | 0.6 [0.4;0.8] | − 0.21 [− 0.29; − 0.13] | 0.5 [0.4;0.7] | − 0.13 [− 0.18; − 0.08] |
> 15 min (= ref) | 1 | – | 1 | – |
Missing data, n (%) | 370 (11.9%) | 751 (11.1%) | ||
Treat-and-release situations | ||||
Yes | 0.5 [0.4;0.5] | − 0.24 [− 0.28; − 0.20] | 0.6 [0.5;0.7] | − 0.11 [− 0.13; − 0.08] |
No (= ref) | 1 | – | 1 | |
Missing data, n (%) | 0 (0.0%) | 0 (0.0%) | ||
COVID-19 | ||||
Months with school lockdown in place > 50% of the timeb | 1.0 [0.9;1.1] | − 0.01 [− 0.06;0.03] | 0.8 [0.7;0.9] | − 0.04 [− 0.07; − 0.02] |
Months without lockdown (= ref) | 1 | – | 1 | – |
Missing data, n (%) | 0 (0.0%) | 0 (0.0%) | ||
Implementation of ZOLL® monitors during the post-intervention periodc | ||||
2 months following implementation date | 1.0 [0.8;1.2] | 0.01 [− 0.06;0.08] | NA | NA |
2 months before implementation date (= ref) | 1 | – | ||
Missing data, n (%) | 0 (0.0%) | |||
Glasgow Coma Score (first observation) | ||||
Green = normal LOC | 1.0 [0.9;1.2] | 0.02 [− 0.04; 0.08] | 0.7 [0.7;0.8] | − 0.10 [− 0.14; − 0.05] |
Yellow/orange/red = altered LOC (= ref) | 1 | – | 1 | – |
Missing data, n (%) | 571 (15.4%) | 1513 (19.3%) | ||
Triage score (first) | ||||
Green = ‘Not urgent’ | 0.8 [0.7;0.9] | − 0.11 [− 0.14; − 0.07] | 0.8 [0.7;0.9] | − 0.07 [− 0.09; − 0.05] |
Yellow/orange/red = ‘Less urgent’/’Urgent’/’Life-threatening’ (= ref) | 1 | – | 1 | – |
Missing data, n (%) | 925 (24.9%) | 1758 (22.4%) | ||
Prehospital physician at the scene | ||||
Yes, HEMS or MECU physician | 0.8 [0.7;0.9] | − 0.08 [− 0.11; − 0.04] | 0.7 [0.7;0.8] | − 0.08 [− 0.10; − 0.06] |
No (= ref) | 1 | – | 1 | – |
Missing data, n (%) | 0 (0.0%) | 0 (0.0%) | ||
Accidentsd | ||||
Trauma | 1.2 [1.1;1.3] | 0.06 [0.02;0.10] | 1.1 [1.0;1.3] | 0.03 [0.01;0.06] |
Minor injuries | 1.4 [1.2;1.6] | 0.15 [0.07;0.23] | 1.6 [1.4;1.9] | 0.14 [0.08;0.20] |
Not accident (= ref) | 1 | – | 1 | – |
Missing data, n (%) | 137 (3.7%) | 136 (1.7%) | ||
Critical intervention(s)e | ||||
≥ 1 intervention(s) performed | 1.6 [1.4;1.7] | 0.22 [0.17;0.27] | 2.2 [2.0;2.4] | 0.25 [0.22;0.28] |
None (= ref) | 1 | – | 1 | – |
Missing data, n (%) | 0 (0.0%) | 0 (0.0%) |