Killed or Seriously Injured

Killed or Seriously Injured

Killed or Seriously Injured (KSI) is a standard metric for safety policy, particularly in transportation and road safety. As the name implies it is the total figure for people killed or seriously injured over a period of time.

In casualty statistics there is a hierarchy of reliability. Figures for fatalities are usually (in industrialised countries at least) highly reliable: few if any fatalities go unrecorded. Measures of seriously injured are less reliable, and are vulnerable to arbitrary classification by non-medical professionals (e.g. police officers attending incidents). Measures of slightly injured are considered highly unreliable, largely due to under-reporting (many minor injuries are self-treated and never reported at all). [ [http://www.iraptranstats.net/defn_safety iRAP International Transport Statistics Database :: Safety: Data Definitions and Caveats ] ]

Although the seriously injured figure is significantly less robust than the fatality figure, fatality figures are typically very small and subject to considerable stochastic variation (for example, British rail passenger fatalities are typically in single figures but one train crash might kill some tens or even hundreds of people). By adding together the two figures, with seriously injured typically being at least an order of magnitude larger, a figure is arrived at which is statistically significant, less subject to this noise, and therefore more amenable to analysis. It also collects together all those casualties which are nominally serious enough to be of legitimate public concern, an important factor in setting policy.

KSI trends should always be viewed with some scepticism: figures are vulnerable to changes in reporting procedures and practices for handling serious incidents, and occasionally to the agenda of those collecting the statistics. [ [http://www.iraptranstats.net/defn_safety#IDAAR4VB iRAP International Transport Statistics Database :: Safety: Data Definitions and Caveats ] ] In some cases these changes are noted, an example being the British Department for Transport's "Road Casualties Great Britain" series, which has a discontinuity in 1996 due to changes in reporting procedures.

The tendency to use KSI in many widely-cited safety metrics has led to an unjustified public perception that these figures are unbiased.

Notes

External links

[http://www.iraptranstats.net/defn_safety iRAP International Transport Statistics Database - Safety Definitions]


Wikimedia Foundation. 2010.

Нужен реферат?

Look at other dictionaries:

  • List of New Zealand police officers killed in the line of duty — This is a list of New Zealand Police officers killed in the line of duty. As of 2009, 29 police officers have been killed by criminal act,[1][2] and about 17 have died from accidental causes, during the execution of duty. There has been one… …   Wikipedia

  • KSI — Killed Or Seriously Injured (Governmental » Transportation) * Kilopounds per Square Inch (Miscellaneous » Unit Measures) * Key Stroke Interface (Computing » General) * Kissidougou, Guinea (Regional » Airport Codes) * Krackeler Scientific, Inc.… …   Abbreviations dictionary

  • List of pipeline accidents — The following is a list of pipeline accidents: This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries. Contents 1 Bel …   Wikipedia

  • Guerrilla phase of the Second Chechen War (2008) — TimelineJanuary*January 1 Three high ranking police officers were assassinated in a separate incidents in Chechnya and Dagestan, local Interior Ministry officials said. [ [http://www.msnbc.msn.com/id/22281583/ 2 police killed in Chechnya attacks… …   Wikipedia

  • List of rail accidents (pre-1950) — For a list of 1950 1999 rail accidents, see List of 1950 1999 rail accidents.For a list of post 2000 rail accidents, see List of rail accidents. notoc Pre 1830 1815 * 1815, exact date unclear ndash; Philadelphia, Co Durham, England: 16 people,… …   Wikipedia

  • United Kingdom — a kingdom in NW Europe, consisting of Great Britain and Northern Ireland: formerly comprising Great Britain and Ireland 1801 1922. 58,610,182; 94,242 sq. mi. (244,100 sq. km). Cap.: London. Abbr.: U.K. Official name, United Kingdom of Great… …   Universalium

  • List of rail accidents in the United Kingdom — This list is of railway accidents in Britain sorted chronologically. For a list sorted by death toll see List of British rail accidents by death toll. It does not include incidents that did not involve rolling stock, such as the King s Cross fire …   Wikipedia

  • Road traffic safety — Sidewalks, curbs and traffic signals in Maryland, United States …   Wikipedia

  • Kent State shootings — Infobox civilian attack title = Kent State shootings caption = John Filo s iconic Pulitzer Prize winning photograph of Mary Ann Vecchio, a fourteen year old runaway, kneeling over the dead body of Jeffrey Miller after he was shot by the National… …   Wikipedia

  • Super Outbreak — Infobox tornado|name=Super Outbreak (1974) image location=Super Outbreak Map.png date=April 3 4, 1974 duration= 18 hours fujitascale=F5 tornadoes=148 confirmed (Most ever in a single day outbreak) total damages (USD)=$3.5 billion (2005 dollars)… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”