Evidence for a Secular Trend in Age of Menarche

Wyshak, Grace; Frisch, Rose E.

doi:10.1056/nejm198204293061707

Cited by 397 publications

(221 citation statements)

References 13 publications

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“…Second, differences in maturational timing across populations might contribute to the ethnic difference. As there is a trend of decreased maturational age with an increase in BMI, body fat or socioeconomic status (Wyshak and Frisch, 1982;Kaplowitz, 2006;Euling et al, 2008aEuling et al, , 2008b, which advances from Vietnam, Indonesia, China, to the US (World Bank, 2008), Chinese adolescents might reach maturation age earlier compared with the Vietnamese and Indonesians, but latter compared with Americans. An adjustment for maturation age in these populations would lead to an increase in ageand sex-specific mean BMI (Daniels et al, 1997;Wang and Adair, 2001), and thus an increase in the consistency between the CDC and IOTF cut points.…”

Section: Discussionmentioning

confidence: 99%

Age, sex and ethnic differences in the prevalence of underweight and overweight, defined by using the CDC and IOTF cut points in Asian children

Tuan

Nicklas

2009

Eur J Clin Nutr

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Background: No nationally representative data from middle-and low-income countries have been analyzed to compare the prevalence of underweight and overweight, defined by using the Centers for Disease Control and Prevention (CDC) and the International Obesity TaskForce (IOTF) body mass index cut points. Objective: To examine the consistency in the prevalence of underweight and overweight, defined by using the CDC and IOTF cut points in Chinese, Indonesian and Vietnamese children. Methods: We used data from 1600 Chinese, 11 756 Indonesian and 53 826 Vietnamese children aged 2-18 years, who participated in three recent, representative surveys in China, Indonesia and Vietnam. A smaller difference between prevalence and a higher k-statistic indicated a higher consistency level. Results: The prevalence of underweight was higher with the IOTF than the CDC cut points; absolute differences in the Chinese, Indonesian and Vietnamese were 6, 10 and 13% (boys), and 10, 13 and 19% (girls), respectively. The prevalence of overweight was more consistent (absolute differences were o2%, except for the 2-5.9-year-old Chinese and Indonesian children (from 2 to o5%)). Values of k-statistic (from 0.55 to 0.88) varied by age, sex and ethnicity. The consistency was gradually improving from the Vietnamese to Indonesians and to Chinese boys and girls, from girls to boys, from the younger to older boys and from the older to younger girls. Conclusions: The age, sex and ethnic differences in the prevalence of underweight and overweight suggest a systematic evaluation of the cut points.

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Section: Discussionmentioning

confidence: 99%

Age, sex and ethnic differences in the prevalence of underweight and overweight, defined by using the CDC and IOTF cut points in Asian children

Tuan

Nicklas

2009

Eur J Clin Nutr

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“…This finding also has been seen in international studies of other developed urban populations. 2 The US National Health and Nutrition Examination Surveys have found no significant change in the median age at menarche over the past 30 years except among the non-Hispanic black population, which has a 5.5-month earlier age at menarche than it did 30 years ago. 3 Age at menarche varies internationally and especially in less developed countries; in Haiti, for example, the mean age at menarche is 15.37 years.…”

Section: Menarchementioning

confidence: 95%

Menstruation in Girls and Adolescents: Using the Menstrual Cycle as a Vital Sign

2006

Pediatrics

439

110

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Young patients and their parents often are unsure about what represents normal menstrual patterns, and clinicians also may be unsure about normal ranges for menstrual cycle length and amount and duration of flow through adolescence. It is important to be able to educate young patients and their parents regarding what to expect of a first period and about the range for normal cycle length of subsequent menses. It is equally important for clinicians to have an understanding of bleeding patterns in girls and adolescents, the ability to differentiate between normal and abnormal menstruation, and the skill to know how to evaluate young patients' conditions appropriately. Using the menstrual cycle as an additional vital sign adds a powerful tool to the assessment of normal development and the exclusion of pathological conditions.

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“…A study on family composition and menarcheal age was conducted by Matchock and Susan [10]. Data were collected on menarcheal age and family composition from a college population.…”

Section: Introductionmentioning

confidence: 99%

Nutritional Status and Menarcheal Age of Rural Adolescent Girls of Salboni Block of Paschim Medinipur, West Bengal, India

De¹

2016

J Child Adolesc Behav

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Evidence for a Secular Trend in Age of Menarche

Cited by 397 publications

References 13 publications

Age, sex and ethnic differences in the prevalence of underweight and overweight, defined by using the CDC and IOTF cut points in Asian children

Age, sex and ethnic differences in the prevalence of underweight and overweight, defined by using the CDC and IOTF cut points in Asian children

Menstruation in Girls and Adolescents: Using the Menstrual Cycle as a Vital Sign

Nutritional Status and Menarcheal Age of Rural Adolescent Girls of Salboni Block of Paschim Medinipur, West Bengal, India

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