VITAL AND HEALTH STATISTICS.DATA 192,345 FROM THE NATIONAL HEALTH SURVEY.Ser.11,nr 121. RELATIONSHIPS Relationships among parent ratings of behavioral characteristics of children. United States.Interrelations of specific behaviors,traits,degree of responsibility, and participation in organized activities for children, by age and sex. Rockville, Md. 1972 U.S.Department of Health Education,and Welfare.Public Health Service 4° s. IV, 49. Vital and Health Statistics,Data from the National Health Surver. Ser.11,nr 121.