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Table 1 Crude Odds Ratios (ORs) and 95% Confidence Intervals (CIs) of Fatal Crash Involvement according to Driver Characteristics in the Continental United States, Selected Time Periods on Fridays and Saturdays, July 20 through December 1, 2006, 2007, 2008, and June 7, 2012 through March 30, 2013 and June 7, 2013 through March 30, 2014

From: Prescription opioids, alcohol and fatal motor vehicle crashes: a population-based case-control study

Driver Characteristicsa

Cases, %

Controls, %

Crude OR

95% CI

(n = 3606)

(n = 15,600)

Age, years

 16–24

27.7

28.6

1.04

0.95, 1.14

 25–39

32.0

32.6

1.05

1.00, 1.15

 40–64

31.3

33.4

1.00

reference

 ≥ 65

9.0

5.4

1.80

1.56, 2.07

Sex

 Female

19.2

40.8

1.00

reference

 Male

80.8

59.2

2.90

2.65, 3.17

Region

 West

22.2

22.5

1.00

reference

 Midwest

22.6

27.9

0.82

0.73, 0.91

 Southern

38.4

33.9

1.14

1.04, 1.26

 Northeast

16.8

15.7

1.08

0.99, 1.21

Blood alcohol concentration (BAC, g/dl)

 <0.01

43.8

92.9

1.00

reference

 0.01–0.07

7.0

5.7

2.63

2.27, 3.06

 ≥ 0.08

49.2

1.4

74.72

64.31, 86.81

Prescription opioids

 Negative

95.0

96.3

1.00

reference

 Positive

5.0

3.7

1.36

1.14, 1.61

  1. aThere were 52 cases with missing data on blood alcohol concentrations
  2. There were 126 controls with missing data on sex, 297 on age, 7 on blood alcohol concentrations