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Table 1 Patient demographics and clinical characteristics

From: Prehospital identification of Covid-19: an observational study

N Pre-Covid Assumed negative Tested negative Positive
2998 5983 2313 481
Female, % 52.8 (51.0–54.6) 51.2 (50.1–52.5) 50.2 (48.2–52.3) 47.0 (42.2–51.1)
Age, median 70.0 (70.0–71.0) 65.0 (64.0–66.0) 77.0 (76.0–77.0) 73.0 (69.0–74.0)
High priority dispatch, % 48.1 (46.3–49.9) 46.7 (45.4–48.0) 40.9 (38.9–42.8) 30.1 (25.8–34.3)
Abnormal airway, % 2.9 (2.3–3.5) 1.9 (1.5–2.3) 3.7 (3.0–4.5) 1.3 (0.4–2.4)
Abnormal breathing, % 17.0 (15.7–18.4) 9.6 (8.8–10.3) 32.4 (30.5–34.4) 46.7 (42.3–51.2)
Abnormal circulation, % 16.8 (15.4–18.1) 12.6 (11.7–13.4) 25.3 (23.4–27.0) 26.0 (21.8–30.2)
Supplemental oxygen, % 15.3 (14.0–16.6) 7.2 (6.5–7.8) 29.5 (27.5–31.3) 36.4 (31.8–41.0)
Medication administration, % 38.6 (36.9–40.3) 32.3 (31.1–33.5) 38.3 (36.4–40.3) 28.5 (24.7–32.4)
High priority transport, % 15.4 (14.2–16.7) 11.0 (10.2–11.9) 22.0 (20.0–23.8) 14.1 (11.0–17.5)
Total mission duration (minutes), median 104 (102–105) 102 (101–103) 120 (118–122) 128 (123–132)
Admitted to hospital, % 49.3 (47.4–51.1) 37.6 (36.4–38.8) 88.6 (87.2–89.9) 83.4 (80.0–86.7)
Admitted to Intensive Care Unit, % 2.0 (1.5–2.6) 0.6 (0.4–0.8) 3.9 (3.1–4.7) 16.2 (12.9–19.5)
30-day mortality, % 5.9 (5.1–6.7) 3.4 (3.0–3.8) 11.3 (9.9–12.6) 23.7 (19.8–27.4)
  1. All data presented with point estimates and bootstrapped 95% Confidence intervals. Grouped by patients cared for prior to the outbreak of Covid-19 from Jan 1-Feb 29 (Pre-Covid), those not tested for Covid-19 (Assumed negative), tested negative (Tested negative), and positive for Covid-19 per PCR-test and/or primary diagnosis code (Positive)