Objective: To evaluate mental health of residents during Obstetrics and Gynecology training and identify the factors that affect mental health problems.
Material and Method: During January-April 2004, one hundred and sixty Obstetrics and Gynecology residents (62% of 259) had completed a self–administered questionnaire composed of demographic data, workload, self-report of life stressors, and the Thai Mental Health Questionnaire (TMHQ-70).
Results: The prevalence of mental health problems was 29% (46/160). Somatization and social function were found in the first and second rank (18.1% and 11.9%), respectively. A resident who was younger than 25 years old, was married, cared for more than 20 patients per 8 hours in the labor room, performed more than 10 academic activities per year, or attended more than 5 examinations per year was at risk to develop social function problems.
Conclusion: About one-third of residents training in Obstetrics and Gynecology have faced mental health problems - somatization, social function, depression and anxiety. The significant risk factors associated with social function problems were younger age, marriage and excessive workload.

Keywords: Mental health, Resident, Obstetrics and Gynecology Training