Because of a typographical error, an obituary in Tuesday's editions of The Washington Post on Maxine Davis McHugh, a former reporter and the author of books and articles on medical and social problems, omitted the day of her death. She died on Friday, May 19, at age 78.

Maxine Davis McHugh, 78, a former Washington reporter and magazine writer who wrote books and articles on medical and social problems, died of pneumonia at the Wisconsin Avenue Nursing Home.

Miss Davis, who wrote under her maiden name, was the author of eight books, including "The Lost Generation," a best seller on the Depression generation of American youth; "Women's Medical Problems," "Sexual Responsibility of Woman," a best-seller; "They Shall Not Want," which discusses unemployment relief, and her last book, "Hope for the Childless Couple."

A journalism graduate of the University of Ohio, Miss Davis began her career as a reporter with the Chicago Journal, now the Sun Times. When she moved to Washington in 1921, she worked for the old Washington Herald, the joined the Washington bureau of the Detroit Free Press. She later reported for United Press, now United Press International.

After one year with UP, she formed her own news service, Capital News, a daily wire and mail service that specialized in news about women.

Miss Davis wrote for the Ladies Home Journal, Good Housekeeping, McCall's, the Staurday Evening Post, Cosmopolitan, and the former Woman's Home Companion and the former Delineator. Although her articles covered a wide range of subjects, they most often concerned women's diseases and other medical problems.

In 1949, she prepared the first complete cancer chart for Good Housekeeping magazine.She also wrote on suck subjects as Venereal diseases.

Miss Davis did considerable traveling in her career. She worked in Europe, covering such events as the World Economic Conference, the British-Indian Round Table Conferences and the assembly of the League of Nations. She studied political, social and economic conditions in several countries ad interviewed such world leaders as Mahatma Gandhi.

Miss Davis once said of her husband, Marine Corps Col. James McHugh, "It's wonderful to meet a guy career!" He was a corporation consultant on the Far East and the author of a Chinese dictionary that is widely used by language students. He died in 1966.

A former resident of Georgetown and later of Knoxville, Md., Miss Davis and her husband sold their home at 3307 N St. NW to John F. Kennedy in 1957, when he was a senator from Massachusetts.

Survivors include two stepsons, James M. Jr., of New York City, and George Michael, of Ithaca, N.Y.