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pubmed:abstractText |
Within the sample of the National Investigation of Development and Growth in Cuba in 1972, the mean age of menarche in girls and the different stages of sexual development in both sexes were analyzed. For menarche, the status method was employed with logit analysis in a national aleatory sample that comprised 13,143 girls. The mean age for menarche was 13.01 +/- 0.02 years with a value of 12.77 for urban population and 13.26 for the rural. The study was also made by provinces. The sexual development, according with the stages of Tanner's method was investigated. The sample included about 26,000 individuals from 8 to 18 years old. The results obtained for the different percentiles with the logit analysis are offered. The importance that adolescents have a different maturation rhythm; precocious, average and late, becomes evident and the importance of the knowledge of these variants in normal individuals by the personnel in charge is pointed out.
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