Abstract
Although sex differences in health care expenditures have been observed,1 it is unclear whether they are related to differences in patterns of illness or preferences for care or to sex bias among health care providers. As health care resources become more constrained, it is important to examine whether women and men receive equitable care. In this issue of the Journal, Mustard et al.2 report an elegant study of sex differences in expenditures for physicians' services and acute hospital care among all citizens of the province of Manitoba, Canada, during 1994–1995. Expenditures were divided into three categories: those related to conditions . . .