Table 1.

Characteristics of the sample of surviving drivers involved in motor vehicle crashes

	Male	Female	Pooled
Sample Size	6,580	4,382	10,962
Weighted Size	2,965,332	2,392,936	5,358,268
Mean (95% CI)
Age, y	36.6 (35.8, 37.3)	38.5 (37.2, 39.7)*	37.4 (36.6, 38.2)
Height, cm	178.0 (177.2, 178.9)	164.4 (163.5, 165.3)**	171.9 (171.4, 172.5)
Weight, kg	84.6 (83.9, 85.3)	69.2 (66.7, 71.8)**	77.7 (76.7, 78.8)
BMI, kg/m2	26.7 (26.5, 26.9)	25.6 (24.9, 26.2)**	26.2 (25.9, 26.4)
ISS (the injured)	2.9 (2.2, 3.6)	2.6 (2.2, 2.9)	2.7 (2.2, 3.2)
Vehicle Age, y	7.9 (7.5, 8.4)	7.1 (6.5, 7.8)*	7.6 (7.1, 8.0)
Curb Weight, kg	1570.6 (1520.4, 1620.8)	1436.4 (1380.9, 1491.8)**	1510.4 (1483.7, 1537.1)
Total ΔV, mph	21.2 (20.6, 21.8)	20.7 (19.5, 22.0)	21.0 (20.2, 21.7)
Percentage (95% CI)
Non-fatal Injury Severity
Overall Injury (ISS>0)	38.1 (34.5, 41.8)	52.2 (44.2, 60.0)**	44.4 (39.0, 49.9)
Moderate Injury (ISS>8)	3.0 (2.0, 4.5)	2.8 (2.2, 3.4)	2.9 (2.3, 3.6)
Serious Injury (ISS>15)	1.2 (0.8, 1.8)	0.9 (0.6, 1.2)	1.1 (0.8, 1.4)
Severe Injury (ISS>24)	0.7 (0.3, 1.3)	0.2 (0.2, 0.4)**	0.5 (0.3, 0.8)
Passenger Car	59.1 (56.7, 61.5)	72.0 (68.7, 75.0)**	64.8 (62.2, 67.4)
Seat Belt Used	77.7 (74.0, 81.0)	84.5 (80.3, 87.9)**	80.7 (77.0, 83.9)
Air Bag Deployed	35.7 (32.8, 38.8)	38.7 (34.8, 42.8)	37.1 (34.2, 40.0)
Rollover	6.0 (4.6, 7.7)	3.3 (2.2, 4.8)**	4.8 (3.7, 6.2)
Single Vehicle Involved	37.8 (31.7, 44.3)	28.9 (25.0, 33.1)*	33.8 (30.1, 37.8)
Daylight Condition	60.9 (56.3, 65.2)	70.0 (66.5, 73.4)**	65.0 (61.4, 68.4)

^*p<0.05;

^**p<0.01; comparisons between men and women were made with weighted t-test for continuous variables and χ² for categorical variables.

Abbreviations: BMI = body mass index; ISS = Injury Severity Score. Data are from the 2003 to 2007 National Automotive Sampling System Crashworthiness Data System.