Figure 1

The career movement of hospital-based and office-based physicians. N1, the number of physicians working in hospitals in 1974; N2, the number in 1984; N3, the number in 1994; N4, the number in 2004. R1, the number of physicians who withdrew from hospitals between 1975 and 1984; R2, between 1985 and 1994; R3, between 1995 and 2004. C1, the number of physicians who remained working in hospitals from 1974; C2, from 1984; C3, from 1994. P1, the number of new physicians who began to work in hospitals between 1975 and 1984; F2, the number between 1985 and 1994; F3, the number between 1995 and 2004. n1, the number of physicians working in clinics in 1974; n2, the number in 1984; n3, the number in 1994; n4, the number in 2004. r1, the number of physicians who retired as office-based physicians between 1975 and 1984; r2, between 1985 and 1994; r3, between 1995 and 2004. c1, the number of physicians who continued as office-based physicians from 1974; c2, from 1984; c3, from 1994. p1, the number of new physicians who began to work as office-based physicians between 1975 and 1984; p2, the number between 1985 and 1994; p3, the number between 1995 and 2004.