| |
Belted
|
Unbelted
|
Total
| |
|---|
| |
Lived
|
Died
|
Lived
|
Died
| |
Chi-square
a
|
|---|
| |
n
(%)
|
n
(%)
|
n
(%)
|
n
(%)
| |
χ
2
(
p
value)
|
|---|
|
Total
|
2,918 (40.4)
|
560 (7.8)
|
2,200 (30.7)
|
1,531 (21.2)
|
7,229
| |
|
Vehicle characteristics
| | | | | | |
|
Vehicle make year
| | | | | |
10.4 (0.0340)
|
|
<1994
|
148 (5.1)
|
29 (5.2)
|
173 (7.8)
|
128 (8.4)
|
478 (6.6)
| |
|
1994 to 1997
|
347 (11.9)
|
76 (13.6)
|
376 (16.9)
|
261 (17.1)
|
1,060 (14.7)
| |
|
1998 to 2004
|
1,311 (44.9)
|
216 (38.6)
|
1,170 (52.7)
|
745 (48.7)
|
3,442 (47.6)
| |
|
2004 to 2008
|
776 (26.6)
|
163 (29.1)
|
401 (18.1)
|
310 (20.3)
|
1,650 (22.8)
| |
|
2009 to 2012
|
336 (11.5)
|
76 (13.6)
|
100 (4.5)
|
87 (5.7)
|
599 (8.3)
| |
|
Curb weight (lbs)
| | | | | |
120.9 (<0.0001)
|
|
<2,949
|
417 (14.6)
|
119 (21.9)
|
359 (16.5)
|
283 (19.0)
|
1,178 (16.7)
| |
|
2,950 to 3,549
|
629 (22.0)
|
187 (34.4)
|
503 (23.1)
|
430 (28.8)
|
1,749 (24.8)
| |
|
3,550 to 3,949
|
267 (9.3)
|
57 (10.5)
|
234 (10.8)
|
157 (10.5)
|
715 (10.1)
| |
|
3,950 to 4,449
|
352 (12.3)
|
55 (10.1)
|
232 (10.7)
|
160 (10.7)
|
799 (11.3)
| |
|
4,450 to 5,999
|
618 (21.6)
|
79 (14.6)
|
393 (18.1)
|
265 (17.8)
|
1,355 (19.2)
| |
|
6,000 or more
|
576 (20.2)
|
46 (8.5)
|
454 (20.1)
|
196 (13.2)
|
1,272 (18.0)
| |
|
Model type
| | | |
119.0 (<0.0001)
|
|
Convertible
|
10 (0.3)
|
0 (0.0)
|
5 (0.2)
|
8 (0.5)
|
23 (0.3)
| |
|
Station wagon
|
76 (2.6)
|
22 (3.9)
|
24 (1.1)
|
26 (1.7)
|
148 (2.1)
| |
|
Sedan
|
1,097 (37.6)
|
329 (58.8)
|
918 (41.4)
|
758 (49.5)
|
3,102 (42.9)
| |
|
SUV
|
834 (28.6)
|
102 (18.2)
|
656 (29.6)
|
436 (28.5)
|
2,028 (28.1)
| |
|
Van
|
466 (16.0)
|
71 (12.7)
|
299 (13.5)
|
141 (9.2)
|
977 (13.5)
| |
|
Pickup truck
|
435 (14.9)
|
36 (6.4)
|
318 (14.3)
|
162 (10.6)
|
951 (13.5)
| |
|
Crash characteristics
| | | | | | |
|
Rollover
| | | | | |
42.9 (<0.0001)
|
|
Yes
|
682 (23.4)
|
134 (23.9)
|
1,049 (47.3)
|
741 (48.4)
|
2,606 (36.1)
| |
|
Ejected
| | | | | |
843.3 (<0.0001)
|
|
Fully
|
19 (0.7)
|
18 (0.7)
|
489 (22.2)
|
706 (46.5)
|
1,232 (17.1)
| |
|
Partially
|
4 (0.1)
|
14 (2.5)
|
44 (2.0)
|
105 (6.9)
|
167 (2.3)
| |
|
Not ejected
|
2,891 (99.2)
|
527 (94.3)
|
1,666 (75.8)
|
707 (46.6)
|
5,791 (80.5)
| |
|
Excessive speed
| | | | | |
31.8 (<0.0001)
|
|
Yes
|
550 (19.0)
|
119 (21.7)
|
799 (36.6)
|
562 (37.5)
|
2,030 (28.5)
| |
|
Side
| | | | | |
8.1 (0.0171)
|
|
Right
|
1,440 (49.9)
|
299 (53.4)
|
921 (42.4)
|
737 (49.3)
|
3,397 (47.8)
| |
|
Left
|
1,202 (41.7)
|
224 (40.0)
|
820 (37.8)
|
536 (35.9)
|
2,782 (39.1)
| |
|
Middle
|
243 (8.4)
|
37 (6.6)
|
429 (19.8)
|
222 (14.8)
|
931 (13.1)
| |
|
Initial point of impact
| | | | | |
171.6 (<0.0001)
|
|
Front
|
1,661 (58.3)
|
257 (47.1)
|
1,167 (54.2)
|
646 (43.6)
|
3,731 (53.1)
| |
|
Back
|
354 (12.4)
|
87 (15.9)
|
110 (5.1)
|
132 (8.9)
|
683 (9.7)
| |
|
Opposite side
|
221 (7.8)
|
43 (7.9)
|
160 (7.4)
|
86 (5.8)
|
510 (7.3)
| |
|
Same side
|
183 (6.4)
|
93 (17.0)
|
121 (5.6)
|
197 (13.3)
|
594 (8.5)
| |
|
Middle-seat side collision
|
34 (1.2)
|
8 (1.5)
|
61 (2.8)
|
42 (2.8)
|
145 (2.1)
| |
|
No collision
|
304 (10.7)
|
45 (8.2)
|
447 (20.8)
|
320 (21.6)
|
1,116 (15.9)
| |
|
Undercarriage
|
90 (3.2)
|
13 (2.4)
|
86 (4.0)
|
58 (3.9)
|
247 (3.5)
| |
-
aChi-square and p value expressed are for the relationship between the left-hand variable in question and death. Vehicle model year (continuous) is the OR for a 1-year increase.
