IX. What type of fatal event is occurring here? some tips on common problems

The following is excerpted from:

The Injury Fact Book, Second Edition
Baker, Susan P., O’Neill, Brian, Ginsburg, Marvin J., and Li, Guohua)
New York Oxford
Oxford University Press, 1992

Urban vs. rural occupant death rates

"Occupant death rates in all types of crashes combined are highest in the southern and western parts of the United States. Mapping by county shows that the counties with the fewest people per square mile have the highest death rates...."

"...The high rates in rural areas in part reflect poorer roads and trauma services but are also strongly influenced by the higher speeds involved in many rural crashes. High blood alcohol concentrations, however, are not more common among occupants killed in rural areas." (Pg 239)

Type of road and speed limit

"Death rates on various types of roads depend on the amount of travel as well as type of road, which influence both the incidence and severity of crashes. When adjustments are made for the amount of travel… rural roads have higher death rates per 100 million miles than do urban roads. This is true for interstates and other limited-access highways, and, to an even greater extent, for roads where access is not controlled...." (Author’s note: As of 1992, there were 3.5 deaths per 100 million vehicle miles on uncontrolled-access rural roads vs. 1.3 deaths per 100 million miles on urban roads.)

"…The ratio of occupant deaths to injuries increases dramatically with the speed limit, from about 5 deaths per 1,000 injuries where the limit is 30 mph or less to 31 per 1,000 where the limit is 55 mph." (Pg 249-251)

Rollover/Overturn

"About 8,000 occupants are killed each year in vehicles that overturn. Death rates for such rollover crashes, which are the highest in the mountain states are related not only to the gradient and curvature of roads but also to the absence of recovery areas and guardrails, which would prevent vehicles that leave the roadway from rolling down an embankment or overturning after striking a curb, ditch, or culvert...."

"...Embankments were cited in 1,300 fatalities in 1983, and curbs, ditches, or culverts were cited in 2,000."

(Pg 242)

"...About one-tenth of all occupants in towaway crashes are in vehicles that overturn. These rollover crashes have high death rates—almost three times the rate for nonrollovers...partly because much larger proportion of occupants (5.4%) are ejected from their vehicles in rollovers, compared with only 0.4 percent ejected from vehicles that do not roll over. Ejection is associated with a fourfold increase in the risk of death... (Pg 246-247)

ROLLOVERS, "THE STATIC STABILITY FACTOR" VEHICLE HEIGHT AND TRACK WIDTH:

Excerpted from "The Expert Witness Scam", Robertson, L., 2000

Free on the World Wide Web at: www.Nanlee.net

"...CJ refers to the civilian jeep. Several variations were sold to the public identified by number -- CJ5, CJ6, CJ7. They were modified versions of the utility vehicles used by the military prior to the development of the wider, more stable, Humvee. Other manufacturers also sold vehicles based on military designs -- Ford's pre-1978 Bronco, Volkswagen's Thing and Toyota's Landrover and Landcruiser. In 1967, the US Army reported that 57 percent of fatal crashes of military jeeps in Europe were rollovers. In 1971, when the army began selling surplus jeeps to the public, the National Highway Traffic Safety Administration recommended that the sales cease because of safety concerns and the army complied. Yet the federal safety agency did nothing about the civilian version. (Emphasis added) The jeep-like vehicles share a common characteristic. Their weights are relatively high off the ground and the distances between the center of their tires (track width) are relatively narrow. This combination produces an unstable vehicle when the ratio of the two factors is low. Anyone who has sawed a piece of 2 by 4 lumber has noticed the stability problem. If the lumber is placed on its two-inch side, it will rock back and forth. On its four-inch side, it is stable and easy to saw. Placement on its four-inch side lowers the weight closer to the ground and increases width of the bottom...

...If you are interested in a vehicle that appears higher off the ground than a passenger car, ask the dealer for the height of center of gravity. If you get it, divide the track width in the sales brochure by the center of gravity height. If the result is 2.4 or greater (the same as a T/2H of 1.2), don't worry about stability. If it is below 2.4, don't buy it and find one that is 2.4 or higher. If the dealer won't tell you the center of gravity height, find one who will or don't buy the vehicle." (Emphasis added)

NHTSA is now rating vehicles according to center of gravity height and track width. They call T/2H SSF (Static Stability Factor). See http://www.nhtsa.dot.gov/hot/rollover/fullWebd.html

Fixed objects

The following is excerpted from:
The Injury Fact Book, Second Edition
Baker, Susan P., O’Neill, Brian, Ginsburg, Marvin J., and Li, Guohua)
New York Oxford
Oxford University Press, 1992.

"Collisions with trees, which claim about 3,000 lives each year, are associated with high death rates in the eastern third of the country. Collisions with utility poles, which result in 1,400 deaths annually, also have high rates in eastern states, especially the Northeast. These differences reflect the fact that many roads in the East are bordered with trees and that utility poles often are very close to the road, especially in areas where they were installed early in this century when roads were narrow. It is possible to identify trees, poles, and other structures that are in especially hazardous locations (e.g., sites that combine a downhill gradient with a road curvature of more than six degrees) and to remove, reposition, or shield such objects in ways that protect vehicle occupants...."

"...Where signs and light supports cannot be moved or shielded with energy-absorbing structures, breakaway structures that yield on impact reduce injuries when crashes occur." (Pg 242)

Passenger vehicles vs. tractor trailer trucks

"...more than 5,000 deaths occur each year in crashes involving large trucks. In such crashes, other road users have especially high fatality rates: 84 percent of the deaths involve persons who were sharing the road with the large truck

"...truck drivers have the eighth highest occupational death rate among 347 occupations studied..."

"...The risk of crashes of large trucks has often been under estimated because about one-half of their mileage is on relatively safe interstate highways, compared with less than one-fourth of passenger vehicle mileage..."

"…as a result, their overall crash involvement rate is low when no adjustment is made for category of road. On comparable roads, however, tractor-trailers have higher rates of crashes than passenger vehicles."

"In addition to high crash rates, fatality rates are high when crashes involve large trucks—largely reflecting the tremendous energy exchanges during the crash phase because of the mass of the truck. Head on crashes between trucks and passenger vehicles are especially unforgiving for the occupants of the passenger vehicles." (Pg 262-264)

Vehicle immersion

"Drowning rates associated with vehicle immersion are highest in Alaska, the Northwest, and several southeastern states. In Florida, where about 45 motor vehicle occupants drown each year, the number of occupant drownings per 100 million vehicle miles is about twice the national average. In Sacramento County, California, sites where drownings in motor vehicles occur involve roads with a greater mean curvature than control sites...."

"...In many states with high rates of motor vehicle related drowning, the lack of physical barriers or spatial separation between roads and canals or other bodies of water no doubt contributes to the likelihood of vehicle occupant drownings." (Pg 242-243)

Motor vehicles vs. Trains

"The geographic patterns vary for different types of crashes. For example, death rates from collisions with trains, which kill about 600 motor vehicle occupants annually, are highest in the central part of the United States. Most of these states have especially large numbers of rail-highway crossing on the same level (referred to as "at grade") with no protection other than warning or stop signs." (Pg 239-242)

RESIDENTIAL FIRES

"Among deaths from fires and burns, housefires cause 73 percent of all deaths and 80 percent of unintentional deaths.... Death rates are highest among young children and the elderly….

"Cigarettes, cited in 28 percent of the deaths, are the leading cause of fatal housefires, which are often started by smoldering cigarettes that ignite upholstered furniture or mattresses....

"Among both blacks and native Americans, housefire death rates are more than twice the rate for whites."

(Pg 162-163)

AUTO VS. PEDESTRIAN FATALITIES

"Pedestrian deaths, the second largest category of motor vehicle deaths, include almost half of the traffic deaths for ages 3-9 and more than one-fourth for ages 75 or older. In 1988, almost 7,000 people were killed as pedestrians, representing about one-seventh of all traffic-related deaths."

"The speed of vehicles involved in pedestrian impacts is a major determinant of the severity and outcome of injury. This is reflected in the much higher ratio of deaths to injuries where speed limits are higher. The ration of deaths to injuries is about nine times as high where the speed limit is 55 mph as on roads where it is 30 mph or less." (Pgs 272 & 277)

 

DROWNING

The following excerpted from:
National Institutes of Health
National Institutes of Child Health and Human Development
July 2, 2001

http://156.40.88.3/new/releases/drowning.cfm

National Study Examines Sites Where U.S. Children Drown

"Infants are most likely to drown in bathtubs, toddlers in swimming pools, and older children in other freshwater sites such as rivers and lakes, according to a study funded by the National Institute of Child Health and Human Development (NICHD)….

The research, the first to present national data on where U.S. children tend to drown, was published in the July issue of Pediatrics

About 1,500 children drown each year in the United States. Consistent with previous studies, the new study found that toddlers and adolescent males had increased risks of drowning, and, among adolescent males, rates were higher for African Americans than whites.

"While toddlers were most likely to drown in swimming pools and adolescent males in other freshwater sites, the reality is more complex," said the study's lead author, Ruth Brenner, M.D., M.P.H., of NICHD's Division of Epidemiology, Statistics, and Prevention Research. "Toddlers are also drowning in other freshwater sites like ponds, lakes, and rivers, and, after five years of age, about a third of drownings among African American males are in swimming pools."

Information for the study was collected from the death certificates of 1,420 children under 20 years old who died by unintentional drowning in 1995. The researchers grouped specific drowning sites into four categories: artificial pools (swimming pools and hot tubs), freshwater bodies (lakes, ponds, rivers, canals and other specified sites), domestic sites (primarily bathtubs and buckets), and salt water. This information was then analyzed by age, region, gender, and race.

Thirty-seven percent of children who drowned were between one and four years old, and 29 percent were between 15 and 19 years old. Seventy-four percent of children who drowned were male.(emphasis added)

Among infants, the majority (78 percent) of drownings occurred in the home, primarily in bathtubs. Toddlers between the ages of one and four years were most likely to drown in artificial pools (56 percent), but other freshwater sites also accounted for a sizable proportion of drownings (26 percent). Children over five were most likely to drown in freshwater: 54 percent, 61 percent, and 69 percent among 5-9, 10-14, and 15-19 year-olds, respectively….

Other authors of study were Ann C. Trumble, Ph.D., of NICHD, Gordon S. Smith, M.B., Ch.B., M.P.H., of the Johns Hopkins University School of Public Health, Eileen P. Kessler of the Consumer Product Safety Commission, and Mary D. Overpeck, Dr.Ph., M.P.H., formerly of NICHD and now with the Maternal and Child Health Bureau."

The NICHD is part of the National Institutes of Health, the biomedical research arm of the federal government. The Institute sponsors research on development before and after birth; maternal, child, and family health; reproductive biology and population issues; and medical rehabilitation. NICHD publications, as well as information about the Institute, are available from the NICHD Website," http://www.nichd.nih.gov, or from the NICHD Clearinghouse, 1-800-370-2943; E-mail NICHDClearinghouse@mail.nih.gov.

Additional information on water safety and drowning prevention can be found on the CDC website, http://www.cdc.gov/od/oc/media/pressrel/r010525.htm

 

DROWNING BEHAVIOR:

The following is information provided to the author by an instructor for:

Rescue III International

Swift water rescue technician course

Drowning behavior, what it looks like and how to recognize it: Contrary to popular belief, a drowning swimmer usually will not call out or signal for help. Most reports of witnessed drownings indicate that the swimmer seemed to be actively "swimming" did not call for help, and then disappeared beneath the surface without a sound. Instead of calling for help or waving, a drowning person’s energy is focused on keeping their nose and mouth above the surface of the water and catching a breath. As they tire, their lower body begins to sink. This causes them to quickly assume the "Crucifix position" (body vertical in the water, arms extended straight out from the shoulders and rapidly pushing against the water, or "dog paddling" rapidly, head tilted back with nose and mouth the highest point above the surface.) They appear to be trying to literally crawl out of the water, straight into the air. This is a very inefficient way to maintain floatation. Once in this position, stricken by panic, the victim becomes solely preoccupied with keeping their mouth and nose in the air. Raising an arm to call for help causes their body to sink a bit, and yelling interferes with the act of snatching a breath when above the surface.

Most people in the United States are not aware of this drowning behavior (which is commonly seen in any pool area where weak young swimmers "dog paddle"). Rapid dog paddling with the body vertical and the mouth and nose barely out of the water is drowning behavior not rudimentary swimming! The public should be taught to recognize it.

Lifeguards at the Coney Island beach in New York were the first to document drowning behavior. At the Coney Island Beach, it was known that there was a specific area of beach that was over-represented for children drowning (cluster site). In order to better monitor this area, cameras were installed and hooked to videotape machines. What they recorded was repeated instances of children reaching a certain distance from shore, and suddenly exhibiting the crucifix position and paddling for their lives to stay afloat. This was due to a step off of a foot or two on the bottom at that location. This step off was not high enough to disturb the adults, but just high enough to bring the depth of the water over the children’s heads. The parents were often oblivious to this; in fact, there is a recording of a man standing between his two young children merrily chatting away while they both exhibit drowning behavior on either side of him. The Coney Island lifeguards adopted a policy of swimming to the rescue immediately when anyone exhibited this behavior and there was a resultant steep drop in children drowning at that location.

SUICIDE

The steady upsurge in suicide is an epidemic. It has replaced homicide as the leading cause of intentional injury death in the United States. Suicide tends to cluster; when a loved one commits suicide, the friends and family are at increased risk to commit suicide. People who have unsuccessfully attempted suicide are also at greatly increased risk of successfully completing the act in the future. Effective efforts to reduce suicide and suicidal behavior must address the problem at its source, focusing on the suicidal people themselves. The current system of mental health intervention works for people during the crisis by stopping their attempt, placing them in a safe environment and evaluating their mental status, but it often ignores them once their immediate crisis has passed. Suicidals are commonly back in their same situation within 72 hours with little or no follow up, angry, and determined not to fail on the next attempt. Outreach programs, crisis lines, and accessible peer support can help maintain contact with suicidal people and will help reduce the incidence of repeated attempts among this risk group.

Multi-disciplinary, community based outreach, intervention and research programs are critically needed at this time. Innovative new ideas to reach out and maintain contact with suicidal people, to gain their trust, offer support, guidance, and friendship are vitally needed. For more information on this subject, please contact the author at: dshort@firedept.net.

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