F1 depicts the number of each type of fellow during the years studied. There were 143, 141, and 104 departmental programs listed in the directory in 1992, 1995, and 2001, respectively. While the number of M.D./Ph.D. fellows dropped somewhat (48, 50, and 40), the number of M.D. research fellows declined dramatically, falling 42.2 percent, from 294 in 1991 to 170 in 2000.