Risk of Trees causing Injury or Death
Introduction
Many people consider trees to be a major hazard and to
pose a significant risk of injury or death. The actual risk of injury or death being caused by
a tree or part of a tree failing is very low compared to other risks
encountered in ‘daily or normal life’.
Fatal Injuries caused by Trees
Research shows there were 64 fatalities in the UK resulting
from trees or parts of trees failing between January 1999 and January 2009, an
average of 6 fatalities per year.
In 2010, there were 1,857 fatalities on British
roads.
Non-Fatal Injuries caused by Trees
The number of A&E cases in the UK attributable to being struck by
trees or parts of trees is around 55 a year out of a total of some 2.9 million annual
leisure-related A&E cases.
Footballs account for 262,000 cases per year, children’s swings account
for 10,900 per year and wheelie bins account for 2,200 cases per year.
Risk of
Fatal Injuries caused by Trees
The annual risk to any one individual of being
killed by a tree is 1:10,000,000 (i.e. 6 deaths per 60 million head of
population)
The HSE state that people regard a risk of ‘one death in a million’ as insignificant
or trivial in their ‘daily or normal life’.
The individual risk of death caused by trees is one tenth or ten times lower than
the risk people accept as being insignificant or trivial in their ‘daily or
normal life’.
Fatalities in ‘daily or normal life’
The following table compares the calculated risks
that are experienced in ‘daily or normal life’.
Annual risk of death | Annual risk | Annual risk per million |
All causes, aged 45-64 (England and Wales, 2003) (1) | 1 in 190 | 5263
|
All causes, aged 30-44 (England and Wales, 2003) (1) | 1 in 940 | 1064
|
Accidents in the home, all ages (England and Wales, 2004) (3) | 1 in 17,000 | 59
|
Road accidents (Great Britain, 2010) (2) | 1 in 32,000 | 31
|
Injuries to all employees in different industries (Great Britain, average 2001/02-2005/06) (4) | 1 in 140,000 | 7
|
Insignificant or Trivial Risk (HSE) | 1 in 1,000,000 | 1
|
Trees | 1 in 10,000,000 | 0.1
|
Lightning (5) | 1 in 19,000,000 | 0.05 |
(1) Office for National Statistics Focus on Health:
(2) Department for Transport Road Casualties Great Britain: 2010
(3) Office for National Statistics Mortality Statistics – Injury and poisoning
(4) Health and Safety Commission Statistics of Fatal Injuries 2005/06
(5) Deaths and injuries caused by lightning in the United Kingdom: analyses of two databases, D. M. Elsom, Tornado and Storm Research Organisation, 2000.