Figure 3. Distribution of time that fellows spent doing research during 1997–1998 in six internal medicine subspecialties. The average time that first-year (top), second-year (middle), and third-year (bottom) fellows spent conducting research is shown for programs that did (white bars) and those that did not (gray bars) have separate clinical or research tracks in 1997–1998. The number of programs with separate tracks was as follows: cardiology, 33; endocrinology, 18; gastroenterology, 27; infectious disease, 33; nephrology, 44; rheumatology, 17.