Mental stress management of medical staff in an international medical cooperation (IMC) is important for effective activities.

The authors examined the mental stress of of IMC medical staff that was experienced throughout three activity periods. The activity periods included: (1) “Period A”, from decision-to-participate to arrival in the field; (2) “Period B”, from arrival in the field to before going back home; and (3) “Period C”, after going back home to three months after going back home. Self-administered questionnaires were used to examine the type of mental care preferred by staff. Participants were 154 medical staff members who worked in a past IMC. The data of 89 medical staff members were analyzed. The period of data collection was between August 2007 and November 2008.

The results clarified that 66 (74.1%) staff felt stress during Period A, 69 (77.5%) during Period B, and 47 (52.8%) during Period C. Main stress factors during Period A included “difficulty of gathering information”, “schedule coordination”, and “rapid environmental changes”; In Period B, “ambiguity of information”, “unexpected circumstances”, and “human relationship”; and in Period C, “lots of works after return to the hospital”, “prepare the activities report”, and “lack of taking vacation after IMC”.

Stress levels and factors gradually changed during activity periods in IMC activities. It is important to establish effective mental stress management systems for the future success of IMCs.