| |
Unadjusted mortality
|
Belt status adjusted mortality
|
Multivariable multilevel mortality
|
|---|
|
Passenger belted
|
0.28 (0.25, 0.31)
|
-
|
0.33 (0.28, 0.39)
|
|
Passenger age (years)
| | | |
|
18 to 19
|
Ref
|
Ref
|
Ref
|
|
20 to 29
|
0.99 (0.86, 1.16)
|
0.97 (0.83, 1.14 )
|
1.17 (0.95, 1.46)
|
|
30 to 39
|
1.05 (0.87, 1.27)
|
1.14 (0.94, 1.40 )
|
1.71 (1.32, 2.21)
|
|
40 to 49
|
1.27 (1.04, 1.57)
|
1.40 (1.13, 1.74 )
|
2.28 (1.72, 3.10)
|
|
50 to 59
|
1.27 (1.02, 1.59)
|
1.67 (1.32, 2.11 )
|
3.00 (2.21, 4.06)
|
|
60 to 69
|
1.87 (1.47, 2.38)
|
3.06 (2.36, 3.97 )
|
6.53 (4.67, 9.14)
|
|
70 to 79
|
2.61 (2.00, 3.41)
|
4.56 (3.41, 6.10 )
|
8.98 (6.15, 13.11)
|
|
Over 80
|
5.67 (4.16, 7.72)
|
11.09 (7.96, 15.45 )
|
26.68 (17.55, 40.56)
|
|
Passenger male
|
0.89 (0.80, 0.98)
|
0.79 (0.71, 0.88)
|
0.96 (0.84, 1.09)
|
|
Rear seat position
| | | |
|
Middle
|
Ref
|
Ref
| |
|
Right
|
1.14 (0.97, 1.34)
|
1.50 (1.27. 1.77)
| |
|
Left
|
0.98 (0.83, 1.15)
|
1.27 (1.07, 1.51)
| |
|
Driver age
| | | |
|
<16
|
1.41 (0.91, 2.18)
|
1.45 (0.92, 2.29)
|
1.35 (0.77, 2.35)
|
|
17 to 19
|
Ref
|
Ref
|
Ref
|
|
20 to 29
|
0.99 (0.84, 1.16)
|
0.96 (0.81, 1.14)
|
0.81 (0.65, 1.01)
|
|
30 to 39
|
0.83 (0.68, 1.01)
|
0.90 (0.73, 1.10)
|
0.71 (0.54, 0.93)
|
|
40 to 49
|
0.87 (0.71, 1.07)
|
0.99 (0.80, 1.23)
|
0.61 (0.45, 0.81)
|
|
50 to 59
|
0.95 (0.77, 1.18)
|
1.23 (0.98, 1.54)
|
0.71 (0.52, 0.97)
|
|
60 to 69
|
0.97 (0.76, 1.24)
|
1.34 (1.04, 1.73)
|
0.59 (0.41, 0.83)
|
|
70 to 79
|
0.94 (0.70, 1.28)
|
1.42 (1.03, 1.95)
|
0.37 (0.24, 0.58)
|
|
Over 80
|
1.45 (1.01, 2.41)
|
2.35 (1.49, 3.72)
|
0.34 (0.24, 0.62)
|
|
Driver drinking or drugged
|
1.30 (1.16, 1.46)
|
0.94 (0.83, 1.06)
| |
|
Vehicle model year (continuous)a
|
0.99 (0.98, 1.00)
|
1.01 (1.00, 1.02)
| |
|
Vehicle model yearb
| | | |
|
<1994
|
Ref
|
Ref
| |
|
1994 to 1997
|
0.94 (0.74, 1.18)
|
0.99 (0.78, 1.25)
| |
|
1998 to 2004
|
0.78 (0.64, 0.96)
|
0.85 (0.69, 1.06)
| |
|
2005 to 2008
|
0.81 (0.65, 1.01)
|
1.05 (0.84, 1.32)
| |
|
2009 to 2012
|
0.75 (0.58, 0.98)
|
1.16 (0.88, 1.52)
| |
|
Model type
| | | |
|
Sedan
|
Ref
|
Ref
|
Ref
|
|
Pickup
|
0.49 (0.41, 0.58)
|
0.48 (0.40, 0.58)
|
0.86 (0.59, 1.25)
|
|
SUV
|
0.67 (0.59, 0.76)
|
0.65 (0.57, 0.74)
|
0.64 (0.50, 0.81)
|
|
Van
|
0.51 (0.43, 0.61)
|
0.55 (0.46, 0.65)
|
0.62 (0.46, 0.84)
|
|
Convertible
|
1.00 (0.42, 2.34)
|
0.96 (0.39, 2.35)
|
0.60 (0.19, 1.90)
|
|
Station wagon
|
0.89 (0.63, 1.27)
|
1.16 (0.81, 1.68)
|
1.01 (0.64, 1.59)
|
|
Vehicle curb weight (lbs)
| | | |
|
<2,949
|
Ref
|
Ref
|
Ref
|
|
2,950 to 3,549
|
1.05 (0.90, 1.23)
|
1.07 (0.91, 1.26)
|
1.11 (0.91, 1.35)
|
|
3,550 to 3,949
|
0.83 (0.68, 1.01)
|
0.81 (0.66, 1.00)
|
0.89 (0.67, 1.17)
|
|
3,950 to 4,449
|
0.71 (0.58, 0.87)
|
0.74 (0.60, 0.91)
|
0.84 (0.62, 1.14)
|
|
4,450 to 5,999
|
0.66 (0.55, 0.78)
|
0.69 (0.57, 0.82)
|
0.80 (0.58, 1.10)
|
|
6,000 or more
|
0.45 (0.38, 0.55)
|
0.45 (0.37, 0.54)
|
0.52 (0.36, 0.77)
|
|
Not ejected
|
Ref
|
Ref
|
Ref
|
|
Ejected fully
|
5.26 (4.62, 5.99)
|
3.49 (3.03, 4.02)
|
4.86 (4.07, 5.81)
|
|
Ejected partially
|
9.15 (6.50, 12.86)
|
6.54 (4.63, 9.25)
|
8.46 (5.71, 12.52)
|
|
Initial impact point
| | | |
|
Front
|
Ref
|
Ref
|
Ref
|
|
Back
|
1.48 (1.24, 1.77)
|
1.85 (1.53, 2.23)
|
1.83 (1.46, 2.30)
|
|
Middle seat, side crash
|
1.65 (1.16, 2.34)
|
1.29 (0.89, 1.85)
|
1.28 (0.84, 1.97)
|
|
Opposite side
|
1.06 (0.86, 1.31)
|
1.07 (0.86, 1.34)
|
0.84 (0.65, 1.10)
|
|
Same side
|
2.99 (2.50, 3.57)
|
3.11 (2.58, 3.75)
|
2.76 (2.22, 3.44)
|
|
Undercarriage
|
1.26 (0.95, 1.68)
|
1.13 (0.84, 1.52)
|
1.06 (0.74, 1.50)
|
|
Non-collision
|
1.53 (1.32, 1.77)
|
1.22 (1.05, 1.42)
|
1.03 (0.84, 1.25)
|
|
Rollover
|
1.42 (1.28, 1.57)
|
1.04 (0.93, 1.16 )
| |
|
Excessive speed
|
1.38 (1.23, 1.54)
|
1.07 (0.96, 1.21)
|
1.25 (1.07, 1.45)
|
-
aVehicle model year (continuous) is the OR for a 1-year increase. bVehicle model year was considered as both continuous and categorical; in adjusted models, it was adjusted for once.
