SER.11, No.133 286,321 Age at menarche, United States. A discussion of current age at menarche / onset of men struation / of American women, and analysis of variations in age at menarche associated with race, region, family income, population... programs of the Health Examination Survey conducted during the period 1960 to 1970. Rockville 1973. U. S. Department of Health, Education, and Welfare Public Health Service 4° s. VI 29. Vital and Health Statistics Data from The National Health Survey Ser. 11, no 133