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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)