Key points are not available for this paper at this time.
Estimates of the prevalence of selected chronic conditions are presented by biological system involved, sex, age, race, family income, geographic region, and place of residence. The percent of conditions causing limitation of activity, the percent of conditions for which a physician was consulted, and the number of restricted-activity days and bed-disability days resulting from the conditions are also included.
John Gary Collins (1988) studied this question.