Key Points
Question
Are higher levels of predeployment optimism among US Army soldiers associated with fewer reports of new pain after deployment?
Findings
Among 20 734 US Army soldiers in this longitudinal cohort study, optimism was associated with 11% lower odds of reporting new postdeployment pain, even while adjusting for demographic, military, and combat factors, including traumatic experiences and combat injury. In addition, 37.3% of soldiers reported pain in at least 1 new area of the body after deployment.
Meaning
The findings suggest that soldiers with low levels of predeployment optimism may be at greater risk of developing new postdeployment pain and may benefit from scalable interventions designed to increase optimism.