A random survey of 400 doctors was carried out over a period of 3 months to determine the factors that would facilitate or inhibit the participation of doctors in continuing medical education (CME) in Malaysia. Regular participation in CME was defined as participation in any activity (self-directed reading or attending organized activities) at least once a month during the past year. It was found that 78% of doctors regularly participated in CME. Working in a hospital environment and being members of the Malaysian Medical Association and at least one specialty organization appeared to be important facilitatory factors in CME participation. These doctors also read the local medical journals regularly and subscribed to other journals. In addition, they were more likely to possess postgraduate qualifications and would have teaching, research, diagnostic or clinical responsibilities as major components of their work. They were more likely to practise in the big cities and would tend to be active in at least one voluntary or social organization. If they were in the Government sector, they were more likely to work in the Universities or in the Hospital Division of the Ministry of Health. The 22% who were less likely to participate in CME were general practitioners in the private sector. They worked long hours with day, evening and/or night shifts every day. If the doctors were in the Government sector, they were more likely to be in the Health Division, working in administration and public health, or they were in the armed forces and other organizations such as local councils. They worked in the smaller towns or in the districts.(ABSTRACT TRUNCATED AT 250 WORDS)