نتایج جستجو برای: menarcheal age
تعداد نتایج: 755669 فیلتر نتایج به سال:
Background Menarche is an important event in a female's reproductive health. However, the age at menarche variable and has implications on future health of girl. The purpose this study was to estimate mean North Indian adolescent girls its association with Tanner stage trend menarcheal India 21st century. Materials & methods A longitudinal descriptive conducted 470 healthy aged nine 16 year...
Girls who grow up in households with an unrelated adult male reach menarche earlier than peers, a finding hypothesized to be an evolutionary strategy for families under stress. The authors tested the alternative hypothesis that nonrandom selection into stepfathering due to shared environmental and/or genetic predispositions creates a spurious relation between stepfathering and early menarche. U...
OBJECTIVE To investigate the relationships between menarcheal timing and both menarcheal experience and attitudes toward menstruation in Mexican girls. DESIGN Cross-sectional survey. SETTINGS Sample of adolescents attending 10 different public schools. PARTICIPANTS Mexican postmenarcheal adolescents, aged 11-16 years. INTERVENTION Participants answered 1 questionnaire about menarcheal e...
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