Table 3.

Patient characteristics in different groups for prospective test set.

Characteristics	Control group	Case group	p value
Total no. of cases	8839	7936
Age, years: median (25th, 75th percentiles)	51.0 (34.0, 65.0)	50.0 (34.0, 65.0)	0.18
Female (%)	54.6%	53.1%	0.06
ETS level 3 (%)	47.9%	47.6%	0.45
Systolic blood pressure	125.0 (113.0, 138.0)	125.0 (113.0, 140.0)	0.04
Diastolic blood pressure	77.0 (68.0, 86.0)	77.0 (68.0, 86.0)	0.004
Heart rate	89.0 (78.0, 101.0)	89.0 (78.0, 102.0)	0.57
Oxygen saturation	98.0 (97.0, 100.0)	99.0 (97.0, 100.0)	0.06
Shock index	0.7 (0.6, 0.8)	0.7 (0.6, 0.8)	0.30
Pulse pressure	47.0 (38.0, 60.0)	47.0 (38.0, 60.0)	0.95
Altered mental status	12 (0.1%)	9 (0.1%)	0.7
Arrival mode			0.4
Ambulance	321 (3%)	314 (4%)
Non-ambulance	8518 (97.0%)	7602 (96.2%)

Considering the degree of missing, only 16,755 out of 17,072 cases are included for use during the prospective testing phase.