Table 3.

Characteristics of the study population with severe (incapacitating or fatal) injuries, by RUCC category.

Characteristic	RUCC*
	1–3 n = 147,327	4–5 n = 12,771	6–7 n = 21,373	8–9 n = 4,294
Person
Age
0–14	6745 (4.6%)	652 (5.1%)	1093 (5.1%)	239 (5.6%)
15–39	87,248 (59.2%)	7631 (59.8%)	12,252 (57.3%)	2487 (57.9%)
40–64	40,095 (27.2%)	3327 (26.1%)	5877 (27.5%)	1199 (27.9%)
65–79	9302 (6.3%)	856 (6.7%)	1577 (7.4%)	270 (6.3%)
80+	3937 (2.7%)	305 (2.4%)	574 (2.7%)	99 (2.3%)
Male	78,427 (53.2%)	7.002 (54.8%)	11.709 (54.8%)	2436 (56.7%)
Driver	96,338 (65.4%)	7701 (60.3%)	13,231 (61.9%)	2577 (60.0%)
Front passenger	28,655 (19.5%)	2644 (20.7%)	4536 (21.2%)	891 (20.8%)
Rear passenger	18,087 (12.3%)	1831 (14.3%)	3114 (14.6%)	719 (16.7%)
Unbelted	34,917 (23.7%)	3751 (29.4%)	7666 (35.9%)	1702 (39.6%)
Ejected from vehicle	10,255 (7.0%)	1290 (10.1%)	2878 (13.5%)	583 (13.6%)
Vehicle/Crash
Alcohol involved	22,800 (15.5%)	1665 (13.0%)	2654 (12.4%)	561 (13.1%)
High speed	42,447 (28.8%)	5812 (45.5%)	11,889 (55.6%)	2874 (66.9%)
Midnight to 6 AM	24,220 (16.4%)	1878 (14.7%)	2766 (12.9%)	515 (12.0%)
6 AM to noon	33,192 (22.5%)	2921 (22.9%)	4894 (22.9%)	1078 (25.1%)
Noon to 6 PM	51,374 (34.9%)	4581 (35.9%)	8159 (38.2%)	478 (33.3%)
6 PM to midnight	38,177 (25.9%)	3349 (26.2%)	5506 (25.8%)	1059 (24.7%)
>1 car collision	85,617 (58.1%)	6528 (51.1%)	9395 (44.0%)	841 (58.7%)
Poor visibility	43,440 (29.5%)	3753 (29.4%)	6382 (29.9%)	1450 (33.8%)
Slippery road	24,299 (16.5%)	2589 (20.3%)	4695 (22.0%)	1093 (25.5%)
Interstate highway	15,540 (10.6%)	2349 (18.4%)	4836 (22.6%)	825 (19.2%)
Southern state	76,382 (51.9%)	6099 (47.8%)	9737 (45.6%)	1114 (25.9%)
Outcome
Died	19,647 (13.3%)	2058 (16.1%)	3914 (18.3%)	836 (19.5%)