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Table 2 Characteristics of subjects from NTDB, NVDRS, and the combined sample

From: The effect of hospital care on early survival after penetrating trauma

 

NTDB

NVDRS

Combined

Cases not excluded

58,399

13,955

72,354

 Age 0 to 39

48,065 (82.3%)

9,257 (66.3%)

57,322 (79.2%)

 Age 40 to 64

9,813 (16.8%)

3,972 (28.5%)

13,785 (19.1%)

 Age 65-79

452 (0.8%)

538 (3.9%)

990 (1.4%)

 Age 80 or more

69 (0.1%)

163 (1.2%)

232 (0.3%)

 Male

52,698 (90.3%)

10,482 (75.1%)

63,180 (87.3%)

 Female

5,526 (9.5%)

3,473 (24.9%)

8,999 (12.4%)

 Firearm mechanism

38,994 (66.8%)

11,322 (81.1%)

50,316 (69.5%)

 Non-firearm mechanism

19,405 (33.2%)

2,633 (18.9%)

22,308 (30.5%)

 Head/neck injury

15,659 (26.8%)

7,743 (55.5%)

23,402 (32.3%)

 Trunk injury

43,218 (74.0%)

7,630 (54.7%)

50,848 (70.3%)

 No head/neck/trunk injury

8,690 (14.9%)

1,690 (12.1%)

10,380 (14.4%)

 Level I trauma center

25,534 (43.7%)

0

25,534 (35.3%)

 Died

8,540 (14.7%)

13,955 (100%)

22,495 (31.1%)

Cases included with valid/non-missing data

29,008

4,824

33,832

 Age 0 to 39

23,426 (80.8%)

3,277 (67.9%)

26,703 (78.9%)

 Age 40 to 64

5,307 (18.3%)

1,335 (27.7%)

6,642 (19.6%)

 Age 65 to 79

242 (0.8%)

164 (3.4%)

406 (1.2%)

 Age 80 or more

33 (0.1%)

46 (1.0%)

79 (0.2%)

 Male

26,088 (90.0%)

3,651 (75.7%)

29,739 (87.9%)

 Female

2,915 (10.1%)

1,173 (24.3%)

4,088 (12.1%)

 Firearm mechanism

19,755 (68.1%)

4,051 (84.0%)

23,806 (70.4%)

 Non-firearm mechanism

9,253 (31.9%)

773 (16.0%)

10,026 (29.6%)

 Head/neck injury

7,753 (26.7%)

2,524 (52.3%)

10,277 (30.4%)

 Trunk injury

21,854 (75.3%)

2,607 (54.0%)

24,461 (72.3%)

 No head/neck/trunk injury

4,178 (14.4%)

693 (14.4%)

4,871 (14.4%)

 Level I trauma center

12,450 (42.9%)

0

12,450 (36.8%)

 Died

4,547 (15.7%)

4,824 (100%)

9,371 (27.7%)

 Died < 240 min

3,725 (12.8%)

3,583 (74.3%)

7,308 (21.6%)

  1. Cases with Injury Severity Score less than 9 or received in transfer from another hospital were excluded from NTDB data. Cases admitted to a hospital were excluded from NVDRS data.