Thus, age at menarche is not fixed, but rather varies among population groups and over time Korean J Obstet Gynecol. However, reports on associations between age at menarche and season have not yielded consistent results.
Average menarcheal age of higher socioeconomic status urban Cape coloured girls assessed by means of status quo and recall methods. The symptoms are subjective, and diagnostic tools including a premenstrual assessment form PAF have been formalized, but it continues to be difficult to objectively diagnose the syndrome because of the absence of accurate criteria. We found that the major symptoms of premenstrual syndrome were nervousness, depression, inertia, abdominal cramps, and lower abdominal pain, similar to previous findings The symptoms vary among individuals and may differ from cycle to cycle. The sexual maturity rating of adolescent boys and girls in Korea. Recently, however, age at menarche has fallen regardless of region or race because of improvements in nutrition and physical growth, and changes in the socio-economic environment In other words, those who did not understand "premenstrual syndrome" may not have given valid responses to the relevant questions. However, our sampling area was confined to Seoul, and our results may thus not be representative of the entire Korean population. Korean J Obstet Gynecol. Early onset of puberty: Am J Phys Anthropol. Regionally, age at menarche was 1 year earlier in Seoul than in other regions of Korea Further data concerning normal variability of the menstrual cycle during adolescence and factors associated with age of menarche. Our study was cross-sectional in design, and the data are useful to aid understanding of current changes in age at menarche among Korean girls. Relative weight and race influence average age at menarche: This means that our survey of symptom memory may have been influenced by information bias. Williams textbook of endocrinology. The PAF is composed of 10 questions addressing mood swing, water retention, and pain. Henneberg M, Louw GJ. However, reports on associations between age at menarche and season have not yielded consistent results. First, all study subjects were middle-high school students in Seoul, and our results thus cannot be automatically generalized to students in other regions of Korea. J Nurs Acad Soc. The antecedents of menarcheal age: Reymert ML, Jost H. Although adolescent menstrual disorders have been actively studied in Korea, only a few reports have assessed the association between present dysmenorrhea and a family history thereof. Zacharias L, Wurtman RJ. A large-scale nationwide survey is required, and data on age at menarche by birth cohort are needed.
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