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Table 1 Baseline characteristics for patients presenting with NSCs to the EMS

From: Serious conditions among patients with non-specific chief complaints in the pre-hospital setting: a retrospective cohort study

  Total Serious condition Serious condition p value.
present not present
N = 3780 n = 1334 (35.3%) n = 2446 (64.7%)
n Md (%) n Md (%) n Md (%)
Sex Female 2033   (53.8) 682   (51.1) 1351   (55.2) 0.015
Male 1747   (46.2) 652   (48.9) 1095   (44.8)  
Age    77    83    72   < 0.001
GCS 13–15 712   (18.8) 270   (20.2) 442   (18.1) 0.005
9–12 60   (1.6) 32   (2.4) 28   (1.1)  
≤ 8 36   (1.0) 15   (1.1) 21   (0.9)  
Missing 2972   (78.6) 1017   (76.2) 1955   (79.9)  
NACA 0–2 765   (20.2) 140   (10.5) 625   (25.6) < 0.001
3–4 2786   (73.4) 1104   (82.8) 1682   (68.8)  
5–7 76   (2.0) 44   (3.3) 32   (1.3)  
Missing 153   (4.0) 46   (3.4) 107   (4.4)  
RETTS Green 2027   (60.8) 484   (40.7) 1543   (71.9) < 0.001
Yellow 677   (20.3) 330   (27.8) 347   (16.2)  
Orange 418   (12.5) 241   (20.3) 177   (8.2)  
Red 214   (6.4) 134   (11.3) 80   (3.7)  
NEWS Low risk 2845   (76.3) 804   (61.0) 2041   (84.7) < 0.001
Medium risk 446   (12.0) 230   (17.5) 216   (9.0)  
High risk 438   (11.7) 284   (21.5) 154   (6.4)  
CCI Md   1    2    1   < 0.001
Admitted Yes 2557   (67.6) 1334   (100) 1223   (50) < 0.001
No 1223   (32.4) 0   (0) 1223   (50)  
In-hospital LOS    5    6    3   < 0.001
In-hospital mortality   160   (4.2) 135   (10.1) 25   (1.0) < 0.001
24 h mortality   42   (1.1) 26   (1.9) 16   (0.7) < 0.001
30 day mortality   372   (9.8) 269   (20.2) 103   (4.2) < 0.001
  1. RETTS Rapid Emergency Triage and Treatment System, NEWS national early warning score, CCI Charlson comorbidity index, LOS length of stay
  2. Differences between serious conditions present/not present expressed as p-values.