Adjusted Odds Ratio’s for the association between vital signs and in-hospital mortality by different age groups
| Total cohort | 18–65 years | 66–80 years | >80 years | |
| Systolic blood pressure (mm Hg) | ||||
| >140* | 1.00 | |||
| 121–140 | 1.35 (1.18–1.54) | 1.68 (1.22–2.33) | 1.28 (1.04–1.57) | 1.39 (1.12–1.72) |
| 101–120 | 1.91 (1.67–2.19) | 2.50 (1.81–3.45) | 1.75 (1.42–2.16) | 1.97 (1.57–2.46) |
| 81–100 | 2.62 (2.22–3.09) | 2.82 (1.92–4.13) | 2.83 (2.21–3.61) | 2.44 (1.84–3.25) |
| 0–80 | 4.07 (3.31–5.01) | 6.38 (4.20–9.70) | 3.33 (2.41–4.60) | 4.17 (2.87–6.05) |
| Diastolic blood pressure (mm Hg) | ||||
| >120 | 1.73 (1.37–2.19) | 1,82 (1.08–3.07) | 2.25 (1.57–3.20) | 1.26 (0.84–1.88) |
| 101–120 | 1.15 (0.96–1.37) | 1.48 (1.04–2.10) | 1,24 (0.95–1.63) | 0.88 (0.65–1.20) |
| 81–100* | 1.00 | |||
| 61–80 | 1.23 (1.09–1.39) | 1.62 (1.24–2.11) | 1,30 (1.08–1.56) | 0.99 (0.82–1.21) |
| 0–60 | 2.12 (1.84–2.44) | 3.42 (2.47–4.73) | 2,32 (1.87–2.88) | 1.59 (1.27–2.00) |
| Mean Arterial blood pressure (mm Hg) | ||||
| >120* | ||||
| 101–120 | 0.88 (0.75–1.03) | 1.01 (0.68–1.50) | 0.81 (0.64–1.02) | 0.95 (0.74–1.23) |
| 81–100 | 1.06 (0.90–1.23) | 1.56 (1.07–2.27) | 0.88 (0.70–1.12) | 1.11 (0.86–1.42) |
| 61–80 | 1.73 (1.47–2.05) | 2.02 (1.33–3.07) | 1.72 (1.33–2.21) | 1.75 (1.32–2.30) |
| 0–60 | 3.27 (2.60–4.10) | 5.72 (3.48–9.42) | 2.86 (2.01–4.09) | 3.17 (2.17–4.64) |
| Peripheral oxygen saturation (%) | ||||
| 96–100* | 1.00 | |||
| 91–95 | 1.46 (1.31–1.62) | 1.68 (1.30–2.18) | 1.30 (1.10–1.53) | 1.48 (1.25–1.77) |
| 86–90 | 2.18 (1.83–2.61) | 3.28 (2.17–4.94) | 1.84 (1.41–2.39) | 2.22 (1.66–2.97) |
| 81–85 | 3.58 (2.80–4.58) | 3.70 (2.08–6.57) | 2.66 (1.81–3.92) | 4.92 (3.32–7.29) |
| 0–80 | 6.28 (5.05–7.82) | 11.1 (7.40–16.6) | 4.50 (3.19–6.34) | 4.99 (3.30–7.56) |
| Respiratory rate (/min) | ||||
| Not registered* | 1.00 | |||
| 0–9 | 0.99 (0.49–2.01) | 0.79 (0.24–2.69) | 1.54 (0.58–4.07) | 0.58 (0.08–4.46) |
| 10–19 | 1.10 (0.92–1.30) | 0.82 (0.60–1.13) | 1.15 (0.87–1.51) | 1.41 (1.02–1.94) |
| 20–29 | 1.83 (1.53–2.18) | 1.47 (1.04–2.06) | 1.89 (1.43–2.50) | 2.28 (1.64–3.15) |
| >30 | 2.89 (2.32–3.60) | 2.57 (1.62–4.06) | 3.23 (2.31–4.53) | 3.17 (2.15–4.68) |
| Heart rate (beats/min) | ||||
| >125 | 2.98 (2.44–3.64) | 4.17 (2.77–6.29) | 2.47 (1.79–3.41) | 2.76 (1.95–3.90) |
| 101–125 | 2.50 (2.16–2.91) | 2.61 (1.85–3.69) | 2.71 (2.16–3.40) | 2.22 (1.72–2.86) |
| 76–100 | 1.43 (1.25–1.63) | 1.34 (0.97–1.85) | 1.48 (1.21–1.82) | 1.48 (1.21–1.81) |
| 51–75* | ||||
| 0–50 | 1.61 (1.19–2.17) | 2.04 (1.02–4.08) | 1.67 (1.04–2.69) | 1.54 (0.96–2.45) |
| Temperature (°C) | ||||
| Not registered* | ||||
| ≥40 | 0.49 (0.28–0.86) | 0.40 (0.12–1.33) | 0.43 (0.17–1.10) | 0.65 (0.26–1.60) |
| 38–39 | 0.68 (0.57–0.80) | 0.69 (0.47–1.00) | 0.74 (0.57–0.95) | 0.57 (0.42–0.78) |
| 35–37 | 0.89 (0.78–1.00) | 0.91 (0.69–1.18) | 0.81 (0.67–0.98) | 0.97 (0.78–1.20) |
| 31–34 | 2.74 (1.96–3.82) | 4.11 (2.25–7.50) | 2.10 (1.23–3.58) | 2.77 (1.52–5.04) |
| 0–30 | 1.54 (0.52–4.54) | 1.17 (0.15–9.34) | 0.60 (0.06–5.74) | 4.04 (0.64–25.6) |
The following potential confounders were entered in the model through backward stepwise regression: age, gender, top 10 chief complaints, hospital, treating specialty, SpO2, temperature, proxies of disease severity (triage level, Glasgow Coma Scale, blood gas analyses, intensive care unit admission) and proxies of disease comorbidities/complexity (number of consultations, lab tests, performed radiological tests).
*Reference category in the regression analyses.
AOR, adjusted odds ratio.