NAME OF DATA ELEMENT: PED_ACTION
DEFINITION: Pedestrian or bicyclist action at time of accident
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 2 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- 00 = Not stated: Information is not known.
- 01 = Crossing the intersection - with signal: At the time
of the accident, was the pedestrian crossing the
intersection while the signal was indication for him to
cross?
- 02 = Crossing at intersection - against signal: This
means that the pedestrian was crossing the street when
the signal did not indicate for him to cross.
- 03 = Crossing at intersection - no signal: If no signal
is present and the accident occurs while the while the
pedestrian is crossing the intersection.
- 04 = Crossing at intersection - diagonally: If the
pedestrian is crossing the intersection diagonally
whether a signal is present or not.
- 05 = Crossing not at intersection: If the pedestrian was
crossing the roadway at a point other than the
intersection.
- 06 = Walking in roadway - with traffic: Indicate if the
pedestrian was walking in the same direction as the
traffic.
- 07 = Walking in roadway - against traffic: If the
pedestrian was walking against the flow of traffic on the
side of the road he was positioned at the time of the
accident.
- 08 = Standing on median island in crosswalk: Indicate
whether or not the pedestrian was standing within the
boundaries of the median island of the crosswalk.
- 09 = Other standing in roadway: Indicate whether or not
the pedestrian was standing in the roadway in any other
position outside the crosswalk boundaries.
- 10 = Getting on or off bus: Self-explanatory.
- 11 = Getting on or off other vehicle: This includes any
vehicle other than a bus, from which a person could
disembark or get into.
- 12 = Pushing or working on vehicle - in roadway: If a
vehicle was disabled, indicate if the pedestrian was
involved in pushing or working on the vehicle.
- 13 = Other working in roadway: Anything not included in
#12 above would be included in this area.
- 14 = Playing in roadway: Self-explanatory.
- 15 = Coming from behind parked cars: An example of this
is a ball rolling out in the street and a person runs out
after it.
- 16 = Hitching on vehicle: Persons grabbing on a vehicle
and sliding on snow or activities such as this.
- 17 = Lying on roadway: Self-explanatory.
- 18 = Vending in roadway: A business or selling place
located on the roadway.
- 19 = Other in roadway: Other activities not included
above.
- 20 = Not in roadway: If the pedestrian was not in the
roadway when hit, use this code.
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
PED_ACTI Frequency Percent Frequency Percent
------------------------------------------------------
00 125 10.8 125 10.8
01 105 9.1 230 19.9
02 99 8.5 329 28.4
03 126 10.9 455 39.3
04 5 0.4 460 39.7
05 298 25.7 758 65.5
06 33 2.8 791 68.3
07 31 2.7 822 71.0
08 3 0.3 825 71.2
09 38 3.3 863 74.5
10 5 0.4 868 75.0
11 8 0.7 876 75.6
12 16 1.4 892 77.0
13 12 1.0 904 78.1
14 47 4.1 951 82.1
15 62 5.4 1013 87.5
16 5 0.4 1018 87.9
17 5 0.4 1023 88.3
18 4 0.3 1027 88.7
19 89 7.7 1116 96.4
20 42 3.6 1158 100.0
Frequency Missing = 97215
Motorcycles
Cumulative Cumulative
PED_ACTI Frequency Percent Frequency Percent
------------------------------------------------------
03 1 10.0 1 10.0
05 2 20.0 3 30.0
06 2 20.0 5 50.0
07 1 10.0 6 60.0
15 4 40.0 10 100.0
Frequency Missing = 853
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: FIRSTAIDBY
DEFINITION: Person who first administered first aid to accident victim
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 2 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is a 2 character number coded as follows:
- 00 = Unknown
- 01 = Policeman
- 02 = Fireman
- 03 = Ambulance personnel
- 04 = Paramedics
- 05 = Doctor
- 06 = Private individual
- 07 = Hospital
- 08 = Helicopter personnel
- 09 = None administered
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
FIRSTAID Frequency Percent Frequency Percent
------------------------------------------------------
00 1578 1.7 1578 1.7
01 560 0.6 2138 2.3
02 5682 6.2 7820 8.5
03 8662 9.4 16482 17.9
04 9130 9.9 25612 27.8
05 253 0.3 25865 28.1
06 701 0.8 26566 28.9
07 888 1.0 27454 29.8
08 73 0.1 27527 29.9
09 64408 70.0 91935 99.9
14 2 0.0 91937 99.9
20 7 0.0 91944 99.9
23 1 0.0 91945 99.9
25 2 0.0 91947 99.9
30 12 0.0 91959 99.9
31 3 0.0 91962 99.9
35 4 0.0 91966 100.0
38 3 0.0 91969 100.0
39 2 0.0 91971 100.0
40 5 0.0 91976 100.0
49 16 0.0 91992 100.0
50 9 0.0 92001 100.0
52 3 0.0 92004 100.0
53 6 0.0 92010 100.0
76 2 0.0 92012 100.0
Frequency Missing = 6361
Motorcycles
Cumulative Cumulative
FIRSTAID Frequency Percent Frequency Percent
------------------------------------------------------
00 6 0.7 6 0.7
01 22 2.6 28 3.3
02 101 12.0 129 15.3
03 221 26.2 350 41.6
04 266 31.6 616 73.2
05 10 1.2 626 74.3
06 29 3.4 655 77.8
07 43 5.1 698 82.9
08 8 1.0 706 83.8
09 136 16.2 842 100.0
Frequency Missing = 21
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the
ability of reporting officers to be consistent in their evaluations.
In the passenger car and light van file, there are 77 entries into categories that
do not exist. This appears to be an acceptable amount, however, they are dispersed
over 15 different categories.
NAME OF DATA ELEMENT: INJURED_TO
DEFINITION: Place where accident victim was taken
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 2 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- 00 = Home
- 01- 70 = Hospitals
- 99 = Other
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
INJURED_ Frequency Percent Frequency Percent
------------------------------------------------------
00 211 1.0 211 1.0
01 1625 8.0 1836 9.1
02 1093 5.4 2929 14.5
03 1210 6.0 4139 20.5
04 1503 7.4 5642 27.9
05 1 0.0 5643 28.0
06 676 3.3 6319 31.3
07 687 3.4 7006 34.7
08 1560 7.7 8566 42.4
09 17 0.1 8583 42.5
10 1324 6.6 9907 49.1
11 740 3.7 10647 52.7
12 71 0.4 10718 53.1
13 489 2.4 11207 55.5
14 95 0.5 11302 56.0
15 376 1.9 11678 57.8
16 1421 7.0 13099 64.9
17 649 3.2 13748 68.1
18 178 0.9 13926 69.0
19 282 1.4 14208 70.4
20 67 0.3 14275 70.7
21 35 0.2 14310 70.9
22 107 0.5 14417 71.4
23 45 0.2 14462 71.6
24 189 0.9 14651 72.6
25 533 2.6 15184 75.2
26 283 1.4 15467 76.6
29 159 0.8 15626 77.4
30 1 0.0 15627 77.4
31 244 1.2 15871 78.6
32 211 1.0 16082 79.7
33 212 1.1 16294 80.7
34 225 1.1 16519 81.8
35 18 0.1 16537 81.9
36 94 0.5 16631 82.4
38 103 0.5 16734 82.9
39 49 0.2 16783 83.1
40 119 0.6 16902 83.7
41 138 0.7 17040 84.4
42 454 2.2 17494 86.7
43 4 0.0 17498 86.7
44 26 0.1 17524 86.8
45 30 0.1 17554 87.0
46 6 0.0 17560 87.0
48 12 0.1 17572 87.0
49 4 0.0 17576 87.1
50 291 1.4 17867 88.5
51 913 4.5 18780 93.0
52 74 0.4 18854 93.4
53 159 0.8 19013 94.2
54 53 0.3 19066 94.4
55 8 0.0 19074 94.5
56 23 0.1 19097 94.6
57 205 1.0 19302 95.6
58 79 0.4 19381 96.0
59 22 0.1 19403 96.1
60 40 0.2 19443 96.3
61 3 0.0 19446 96.3
62 4 0.0 19450 96.3
64 3 0.0 19453 96.4
65 4 0.0 19457 96.4
66 1 0.0 19458 96.4
70 548 2.7 20006 99.1
71 52 0.3 20058 99.4
99 130 0.6 20188 100.0
Frequency Missing = 78185
Motorcycles
Cumulative Cumulative
INJURED_ Frequency Percent Frequency Percent
------------------------------------------------------
00 3 0.5 3 0.5
01 34 5.7 37 6.2
02 31 5.2 68 11.4
03 46 7.7 114 19.0
04 40 6.7 154 25.7
06 40 6.7 194 32.4
07 8 1.3 202 33.7
08 29 4.8 231 38.6
09 4 0.7 235 39.2
10 36 6.0 271 45.2
11 21 3.5 292 48.7
13 27 4.5 319 53.3
14 3 0.5 322 53.8
15 12 2.0 334 55.8
16 56 9.3 390 65.1
17 27 4.5 417 69.6
18 2 0.3 419 69.9
19 5 0.8 424 70.8
21 4 0.7 428 71.5
22 5 0.8 433 72.3
23 1 0.2 434 72.5
24 8 1.3 442 73.8
25 17 2.8 459 76.6
26 15 2.5 474 79.1
29 10 1.7 484 80.8
31 7 1.2 491 82.0
32 4 0.7 495 82.6
33 8 1.3 503 84.0
34 1 0.2 504 84.1
36 3 0.5 507 84.6
39 2 0.3 509 85.0
40 4 0.7 513 85.6
41 4 0.7 517 86.3
42 9 1.5 526 87.8
44 5 0.8 531 88.6
45 1 0.2 532 88.8
50 2 0.3 534 89.1
51 22 3.7 556 92.8
52 1 0.2 557 93.0
53 6 1.0 563 94.0
54 4 0.7 567 94.7
56 2 0.3 569 95.0
57 12 2.0 581 97.0
58 1 0.2 582 97.2
59 1 0.2 583 97.3
62 2 0.3 585 97.7
70 8 1.3 593 99.0
99 6 1.0 599 100.0
Frequency Missing = 264
STRENGTHS AND WEAKNESSES:
This data element will be changed in the future by collapsing the facilities
into primary, secondary, or tertiary centers.
NAME OF DATA ELEMENT: TAKEN_BY
DEFINITION: Method used to transport accident victim
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- 1 = Ambulance - Private
- 2 = Ambulance - Police
- 3 = Paramedics
- 4 = Private Vehicle
- 5 = Other
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
TAKEN_BY Frequency Percent Frequency Percent
------------------------------------------------------
1 10562 49.1 10562 49.1
2 4445 20.7 15007 69.8
3 1980 9.2 16987 79.0
4 3348 15.6 20335 94.5
5 1178 5.5 21513 100.0
Frequency Missing = 76860
Motorcycles
Cumulative Cumulative
TAKEN_BY Frequency Percent Frequency Percent
------------------------------------------------------
1 273 44.9 273 44.9
2 106 17.4 379 62.3
3 67 11.0 446 73.4
4 127 20.9 573 94.2
5 35 5.8 608 100.0
Frequency Missing = 255
STRENGTHS AND WEAKNESSES:
NAME OF DATA ELEMENT: PLACEMENT
DEFINITION: Position of accident victim in/on vehicle
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 3 Digit Alphanumeric
DATA ELEMENT CONTENT:
This section follows the Fatal Accident Reporting System (FARS) format. Front seat passengers are 11,12, and 13. Rear seat passengers are 21, 22, and 23. If a van, bus or other type vehicle is involved, 31, 32, and 33 are used for the third seat passengers, while 41, 42, and 43 are used for fourth seat passengers. A passenger seated on a motorcycle is coded as a 52. Other seating is listed as described in the code following below.
This data element is coded as follows:
- 011 = Front seat - left (driver side)
- 012 = Front seat - middle
- 013 = Front seat - right
- 018 = Front - other
- 019 = Front - unknown
- 020 = Second seat - left
- 022 = Second seat - middle
- 023 = Second seat right
- 028 = Second seat - other
- 029 = Second seat unknown
- 031 = Third seat - left
- 032 = Third seat - middle
- 033 = Third seat - right
- 038 = Third seat other
- 039 = Third seat unknown
- 041 = Fourth seat - left
- 042 = Fourth seat - middle
- 043 = Fourth seat - right
- 048 = Fourth seat - other
- 049 = Fourth seat - unknown
- 050 = Sleeper section (truck)
- 051 = Enclosed passenger or cargo area
- 052 = Unenclosed passenger or cargo area
- 053 = Passenger/cargo area - unknown enclosed
- 054 = Trailing unit
- 055 = Riding on vehicle exterior
- 099 = Unknown
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
PLACEMENT Frequency Percent Frequency Percent
------------------------------------------------------
001 2 0.0 2 0.0
004 1 0.0 3 0.0
011 66035 67.1 66038 67.1
012 1979 2.0 68017 69.1
013 18660 19.0 86677 88.1
018 2 0.0 86679 88.1
019 2 0.0 86681 88.1
021 3525 3.6 90206 91.7
022 1958 2.0 92164 93.7
023 4454 4.5 96618 98.2
028 5 0.0 96623 98.2
029 2 0.0 96625 98.2
031 275 0.3 96900 98.5
032 245 0.2 97145 98.8
033 279 0.3 97424 99.0
038 1 0.0 97425 99.0
039 1 0.0 97426 99.0
041 159 0.2 97585 99.2
042 120 0.1 97705 99.3
043 197 0.2 97902 99.5
048 8 0.0 97910 99.5
049 1 0.0 97911 99.5
050 7 0.0 97918 99.5
051 239 0.2 98157 99.8
052 49 0.0 98206 99.8
053 3 0.0 98209 99.8
054 2 0.0 98211 99.8
055 61 0.1 98272 99.9
099 101 0.1 98373 100.0
Motorcycles
Cumulative Cumulative
PLACEMENT Frequency Percent Frequency Percent
------------------------------------------------------
011 719 83.3 719 83.3
012 57 6.6 776 89.9
013 14 1.6 790 91.5
021 20 2.3 810 93.9
022 18 2.1 828 95.9
023 3 0.3 831 96.3
042 1 0.1 832 96.4
052 22 2.5 854 99.0
055 9 1.0 863 100.0
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: AGE
DEFINITION: Age of person involved in accident
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 2 Digit Numeric
DATA ELEMENT CONTENT:
The age is a 2 digit integer field. This value is recorded by the police officer, and is not a calculated field based on birthdates. This field is carried forward into other age fields if calculating fields (dates of incident and birth) are not available for direct calculation, and if ages are missing from relevant records (EMS, outpatient, or inpatient records).
STATISTICAL ANALYSIS:
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: SEX
DEFINITION: Gender of occupant
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
The sex of the driver and each occupant is listed. This data element is coded as follows:
- 1 = Male
- 2 = Female
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
SEX Frequency Percent Frequency Percent
----------------------------------------------------
5 1 0.0 1 0.0
Female 45296 46.1 45297 46.1
Male 52963 53.9 98260 100.0
N 1 0.0 98261 100.0
Frequency Missing = 112
Motorcycles
Cumulative Cumulative
SEX Frequency Percent Frequency Percent
----------------------------------------------------
Female 130 15.1 130 15.1
Male 733 84.9 863 100.0
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the ability of reporting officers to be consistent in their evaluations. It is obvious that there are 2 keypunch errors with the values of "5" and "N" in the passenger car and light van file.
NAME OF DATA ELEMENT: SAFETY
DEFINITION: Safety equipment used by vehicle driver and passenger
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- 0 = Unknown
- 1 = Lap belt used
- 2 = Lap and shoulder belt used
- 3 = Belts not used
- 4 = Belts not installed
- 5 = Child restraint used
- 6 = Air bag deployed
- 7 = Helmet worn
- 8 = Eye protection used
- 9 = Helmet and eye protection used
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
SAFETY Frequency Percent Frequency Percent
--------------------------------------------------------------
Unknown 89 0.1 89 0.1
Lap belt used 9317 10.3 9406 10.4
Lap/Shoulder use 56039 61.9 65445 72.3
Belts not used 22843 25.2 88288 97.5
Belts not instal 591 0.7 88879 98.2
Child restraint 1600 1.8 90479 99.9
Air bag deployed 47 0.1 90526 100.0
Helmet worn 9 0.0 90535 100.0
Eye protection 2 0.0 90537 100.0
Helmet & eye 16 0.0 90553 100.0
Frequency Missing = 7820
Motorcycles
Cumulative Cumulative
SAFETY Frequency Percent Frequency Percent
--------------------------------------------------------------
Unknown 2 0.4 2 0.4
Lap belt used 10 2.1 12 2.5
Lap/Shoulder use 14 2.9 26 5.5
Belts not used 129 27.0 155 32.5
Belts not instal 78 16.4 233 48.8
Helmet worn 139 29.1 372 78.0
Eye protection 19 4.0 391 82.0
Helmet & eye 86 18.0 477 100.0
Frequency Missing = 386
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: INJ_CODE
DEFINITION: Type of injury suffered in accident
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- 1 = No injury
- 2 = Possible injury
- 3 = Bruises/abrasions
- 4 = Bones/Bleeding
- 5 = Fatal
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
INJ_CODE Frequency Percent Frequency Percent
--------------------------------------------------------------
No injury 79879 81.2 79879 81.2
Possible injury 9593 9.8 89472 91.0
Bruises/Abrasions 5461 5.6 94933 96.5
Bones/Bleeding 3220 3.3 98153 99.8
Fatal 206 0.2 98359 100.0
Frequency Missing = 14
Motorcycles
Cumulative Cumulative
INJ_CODE Frequency Percent Frequency Percent
--------------------------------------------------------------
No injury 114 13.2 114 13.2
Possible injury 70 8.1 184 21.3
Bruises/Abrasion 339 39.3 523 60.6
Bones/Bleeding 318 36.8 841 97.5
Fatal 22 2.5 863 100.0
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: INJ_CAUSE
DEFINITION: Object that caused injury
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- 1 = Steering wheel
- 2 = Windshield/dashboard
- 3 = Roof
- 4 = Other interior
- 5 = Motorcycle handlebars
- 6 = Motorcycle gas tank
- 7 = Exterior vehicle part
- 8 = External object
- 9 = Unknown
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
INJ_CAUS Frequency Percent Frequency Percent
-------------------------------------------------------------
Steering wheel 1831 10.8 1831 10.8
Windshield/Dash 3587 21.1 5418 31.9
Roof 502 3.0 5920 34.9
Other interior 9912 58.4 15832 93.2
Handlebars 46 0.3 15878 93.5
Cycle gas tank 70 0.4 15948 93.9
External part 225 1.3 16173 95.2
External object 733 4.3 16906 99.5
Unknown 77 0.5 16983 100.0
Frequency Missing = 81390
Motorcycles
Cumulative Cumulative
INJ_CAUS Frequency Percent Frequency Percent
-------------------------------------------------------------
Steering wheel 10 1.4 10 1.4
Windshield/Dash 2 0.3 12 1.7
Roof 3 0.4 15 2.1
Other interior 10 1.4 25 3.5
Handlebars 48 6.6 73 10.1
Cycle gas tank 19 2.6 92 12.7
External part 124 17.1 216 29.8
External object 504 69.6 720 99.4
Unknown 4 0.6 724 100.0
Frequency Missing = 139
NAME OF DATA ELEMENT: INJ_AREA
DEFINITION: Area of the victim's body that suffered the most severe injury
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
- 1 = Head
- 2 = Face
- 3 = Neck
- 4 = Chest
- 5 = Back
- 6 = Leg(s)
- 7 = Arm(s)
- 8 = Torso
- 9 = Unknown
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
INJ_AREA Frequency Percent Frequency Percent
------------------------------------------------------
0 1 0.0 1 0.0
Head 5046 29.2 5047 29.2
Face 1557 9.0 6604 38.2
Neck 3941 22.8 10545 61.0
Chest 1179 6.8 11724 67.9
Back 1193 6.9 12917 74.8
Leg(s) 1654 9.6 14571 84.4
Arm(s) 1318 7.6 15889 92.0
Torso 1007 5.8 16896 97.8
Unknown 378 2.2 17274 100.0
Frequency Missing = 81099
Motorcycles
Cumulative Cumulative
INJ_AREA Frequency Percent Frequency Percent
------------------------------------------------------
Head 146 20.2 146 20.2
Face 38 5.2 184 25.4
Neck 15 2.1 199 27.5
Chest 14 1.9 213 29.4
Back 28 3.9 241 33.3
Leg(s) 254 35.1 495 68.4
Arm(s) 134 18.5 629 86.9
Torso 88 12.2 717 99.0
Unknown 7 1.0 724 100.0
Frequency Missing = 139
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the ability of reporting officers to be consistent in their evaluations. There appears to be 1 keypunch error in the passenger car and light van file with the listing of a "0."
NAME OF DATA ELEMENT: EJECTION
DEFINITION: Indicates whether or not the driver was ejected
SOURCE FILE: Crash
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Alphanumeric
DATA ELEMENT CONTENT:
The reporting officer is instructed to indicate whether or not the driver is ejected from the vehicle. This data element is coded as follows:
- 1 = Not ejected
- 2 = Partially ejected
- 3 = Fully ejected
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
EJECTION Frequency Percent Frequency Percent
--------------------------------------------------------------
Not ejected 78836 99.2 78836 99.2
Partial ejection 111 0.1 78947 99.4
Fully ejected 492 0.6 79439 100.0
Frequency Missing = 18934
Motorcycles
Cumulative Cumulative
EJECTION Frequency Percent Frequency Percent
--------------------------------------------------------------
Not ejected 278 38.6 278 38.6
Partial ejection 57 7.9 335 46.5
Fully ejected 386 53.5 721 100.0
Frequency Missing = 142
STRENGTHS AND WEAKNESSES:
This data element relies upon the accuracy of the reporting officer and the ability of reporting officers to be consistent in their evaluations.
NAME OF DATA ELEMENT: DEAD
DEFINITION: Flag indicating occupant is dead
SOURCE FILE: Calculated flag (algorithm described below)
TARGET FILES: PASSCAR.DBF and CYCLES.DBF
CODE FORMAT: 1 Digit Numeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
0 = Alive
1 = Dead
STRENGTHS AND WEAKNESSES:
Reliability is high for this field.
NAME OF DATA ELEMENT: BELTUSE
DEFINITION: Code for beltuse
SOURCE FILE: Calculated flag (algorithm described below)
TARGET FILES: PASSCAR.DBF
CODE FORMAT: 1 Digit Numeric
DATA ELEMENT CONTENT:
This data element is coded as 1 if the investigating officer explicitly
indicated that the lap, lap and shoulder, or child restraint device was
used. It is coded as 0 if the officer explicitly stated that belts were
not used or not installed. Thus, the variable explicitly excludes air bag
deployed occupants. All others were left empty.
PROGRAMMING ALGORITHM:
replace all beltuse with 0 for safety = '3' or safety = '4'
replace all beltuse with 1 for safety = '1' or safety = '2' or safety =
'5'
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
BELTUSE Frequency Percent Frequency Percent
------------------------------------------------------
Not used 23434 25.9 23434 25.9
Used 66956 74.1 90390 100.0
Frequency Missing = 7983
STRENGTHS AND WEAKNESSES:
NAME OF DATA ELEMENT: BAGDEP
DEFINITION: Flag indicating deployment of airbag
SOURCE FILE: Calculated flag (algorithm described below)
TARGET FILES: PASSCAR.DBF
CODE FORMAT: 1 Digit Numeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
0 = No air bag deployed
1 = Air bag deployed
PROGRAMMING ALGORITHM:
replace all bagdep with 0
replace all bagdep with 1 for safety = '6'
STATISTICAL ANALYSIS:
Passenger Cars and Light Vans
Cumulative Cumulative
BAGDEP Frequency Percent Frequency Percent
----------------------------------------------------
0 98326 100.0 98326 100.0
1 47 0.0 98373 100.0
STRENGTHS AND WEAKNESSES:
NAME OF DATA ELEMENT: HELMET
DEFINITION: Flag indicating helmet use
SOURCE FILE: Calculated flag (algorithm described below)
TARGET FILES: CYCLES.DBF only
CODE FORMAT: 1 Digit Numeric
DATA ELEMENT CONTENT:
This data element is coded as follows:
0 = Not used or unknown
1 = Helmet used
STRENGTHS AND WEAKNESSES:
This field is weakened because the Utah crash report, until 1994, has only
offered the police officer the choice of helmet used or unknown. That is,
there is no option to specifically indicate that a helmet was NOT used.
This will result in a large possible misclassification, which may bias
estimated helmet efficacy toward the null.
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