Service personnel deployed for more than 13 months have an increased risk of developing post-traumatic stress disorder, a study has shown.
Research conducted on 5,547 members of the UK armed forces deployed to Iraq reveals personnel deployed for more than 13 months are 55% more likely to fulfil criteria for PTSD.
They were also 28% more likely to experience problems at home if deployed for more than 13 months, the study shows.
There was also an association between a longer than expected period of deployment and the chances of developing PTSD symptoms.
In this situation, Royal Navy personnel were 12 times more likely to develop PTSD, compared with army and Royal Marine personnel, who were more than twice as likely to develop the symptoms.
BMJ (2007) online first