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Table 6 Increased risk (95 % CIs) per unit humidex increase above threshold for BLSa and ALSb analyses*

From: Impacts of extreme heat on emergency medical service calls in King County, Washington, 2007–2012: relative risk and time series analyses of basic and advanced life support

 

All ages

Age groups (years)

0–4

5–14

15–44

45–64

65–84

85+

All causes

 BLS

6.6 (4.5,8.7)

11.6 (1.7,22.4)

4.7 (−5.5,15.9)

5.1 (1.9,8.3)

8.6 (5.3,12.1)

7.6 (3.7,11.7)

8.1 (2.9,13.6)

 ALS

3.8 (1.09,6.5)

4.2 (−11.1,22.2)

2.1 (−16.8,25.2)

1.9 (−3,7)

7.7 (3.5,12.0)

2.3 (−2.7,7.5)

3.6 (−3.5,11.2)

Trauma

 BLS

−4.3 (−10.2,2.0)

3.4 (−17.2,29.1)

14.5 (−33.9,10.6)

−11.5 (−20,−2.6)

−2.9 (−13.1,8.5)

4.5 (−7.1,17.6)

7.0 (−8.1,24.7)

 ALS

−6.3 (−16.5,5.3)

24.7 (−5.8,65.2)

−4.7 (−44.8,64.4)

−8.7 (−21.9,6.7)

−8.5 (−28,16.3)

−18.9 (−51,34.0)

−2.1 (−45.3,75)

Non-trauma

 BLS

10.0 (7.6,12.5)

−0.5 (−100,Inf)

7.9 (4.5,11.5)

10.9 (6.2,15.8)

−0.5 (−100,Inf)

7.9 (4.5,11.5)

10.9 (6.2,15.8)

 ALS

4.2 (1.3,7.1)

−7.1 (−26.1,16.9)

−1.3 (−24,28.2)

1.7 (−3.9,7.6)

7.8 (3.5,12.3)

2.2 (−2.9,7.5)

4.2 (−2.9,11.8)

No transportation

 BLS

10.9 (7.30,14.6)

19.2 (5. 6,34.5)

18.0 (3.7,34.3)

7.2 (1.8,12.9)

16.0 (9.8,22.6)

8.2 (0.7,16.2)

7.6 (−2.4,18.7)

 ALS

10.0 (3.8,16.6)

15.7 (−15.3,57.9)

10.9 (−22.1,58.1)

12.8 (3.0,23.5)

12.8 (3.0,23.5)

3.0 (−10.6,18.5)

−4.1 (−24.2,21.2)

Any transportation

 BLS

5.6 (3.3,8.0)

2.9 (−10.2,17.8)

−4.2 (−17.2,11.0)

3.8 (0.1,7.6)

6.3 (2.4,10.3)

7.4 (3.1,11.9)

8.1 (2.2,14.2)

 ALS

3.1 (0.2,6.1)

−2.1 (−19.5,19.2)

−1.0 (−22.4,26.3)

−1.3 (−6.8,4.4)

6.9 (2.4,11.6)

2.0 (−3.3,7.6)

4.6 (−2.8,12.6)

  1. *Bolded estimates are significantly greater than 1 (p <0.05)
  2. a40.7 °C humidex threshold
  3. b39.7 °C humidex threshold