Health statistics from U.S. national health survey series. B-20. Arthritis and rheumatism reported in interviews, United States July 1957-June 1959, statistics on prevalence of arthritis and rheumatism and disability due to these conditions by age, sex, and medical care status, based on data collected in household interviews during period July 1957-June 1959 [with list of references; prepared by (Geraldine A. Gleeson].