Age at Menarche and Racial Comparisons in US Girls

Chumlea, William Cameron; Schubert, Christine M.; Roche, Alex F.; Kulin, Howard E.; Lee, Peter A.; Himes, John H.; Sun, Shumei S.

doi:10.1542/peds.111.1.110

Cited by 603 publications

(449 citation statements)

References 7 publications

Supporting

Mentioning

384

Contrasting

Unclassified

Order By: Relevance

“…Therefore, analysis of variance within and across generations is the key issue for answering the question of whether or not it is necessary to control for phase of sexual maturity. 20 2) indications that, for the population as a whole, countries such as the USA and Holland do not currently exhibit the tendency towards reducing age at menarche; 21,22 3) in Brazil, the reduction in age at menarche is estimated at 2.4 to 2.7 months per decade. 23,24 Taken together this evidence allows for the assumption that, in the case of Brazil, the impact of intergenerational variation (including variations within and between individuals) should not distort the curves presented here.…”

Section: Resultsmentioning

confidence: 99%

Valores críticos do índice de massa corporal para classificação do estado nutricional de crianças e adolescentes brasileiros

Conde¹,

Monteiro²

2006

J. Pediatr. (Rio J.)

View full text Add to dashboard Cite

Objective: To delineate a classification system, comprising reference curves and cutoff points, based on the distribution of body mass index (BMI) across a national reference population and designed for the assessment of the nutritional status of Brazilian children and adolescents.Methods: Data from 13,279 males and 12,823 females aged from 2 to 19 years, extracted from the National Nutrition and Health Survey dataset (1989), were used to construct a reference curve. The LMS method was employed to calculate the BMI curve parameters and polynomial functions were used to model these parameters against age. The cutoff values for classifying nutritional status as underweight, overweight and obese were expressed as centiles and BMI values equivalent to 17.5, 25 and 30 kg/m 2 at 20 years, respectively.Results: Values for the L, M and S parameters were tabulated at 6-month intervals for each sex. Using these values, a graph was plotted with nine BMI distribution reference centiles. Cutoff values were presented that are equivalent to BMIs of 17.5, 25 and 30 kg/m 2 at the start of adulthood. Conclusions:The classification system presented here can be used for clinical and epidemiological assessments, it is methodologically similar to the majority of national curves that have been presented to date and, furthermore, it offers a definition of underweight.

show abstract

Section: Resultsmentioning

confidence: 99%

Valores críticos do índice de massa corporal para classificação do estado nutricional de crianças e adolescentes brasileiros

Conde¹,

Monteiro²

2006

J. Pediatr. (Rio J.)

View full text Add to dashboard Cite

show abstract

“…Cut off ages for early maturation were: 12.28 years for White, 11.55 years for African American, and 11.97 years for Latina girls. According to an investigation of age at menarche for girls in the United States, the cut-off ages by ethnicity for early maturation were consistent with national trends, such that African American girls tend to experience menarche first, followed by Hispanic, then non-Hispanic White girls (Chumlea et al 2003). Reports of breast and pubic hair development as reported by mother using the five-stage Tanner rating system (Marshall and Tanner 1969) were used to classify girls who had not yet experienced menarche.…”

Section: Methodsmentioning

confidence: 98%

Coping with Social Stress: Implications for Psychopathology in Young Adolescent Girls

Sontag

Graber

Brooks‐Gunn

et al. 2008

J Abnorm Child Psychol

103

View full text Add to dashboard Cite

This study investigated the impact of social stress on symptoms of psychopathology at the entry into adolescence (111 girls, Mage=11.84, SD=0.77). We examined whether peer stress and pubertal timing were associated with internalizing distress and aggression, and whether responses to stress and cortisol reactivity mediated or moderated these associations. Cortisol samples were collected from saliva samples during in-home visits, and the YSR was used to assess psychopathology. Interestingly, pubertal timing demonstrated a trend association with cortisol. Responses to stress mediated the association between social stress and symptoms of internalizing distress and aggression. Specifically, early maturers and girls with higher levels of peer stress exhibited more problematic responses to stress, in turn demonstrating higher levels of internalizing distress and aggression. Significant moderation effects also emerged. For example, early maturers who experienced higher levels of emotional/cognitive numbing in response to peer stress were at greater risk for aggression. Findings identify coping strategies that may be used in evidence-based programming to help girls transition more successfully into adolescence will be discussed. KeywordsPeer stress; Coping; Pubertal timing; Internalizing; Aggression Adolescence represents a period for developing skills-interpersonal as well as personal. However, as consistent with the diathesis-stress model, some individuals enter adolescence with prior vulnerabilities (poorer problem solving skills, less developed emotion regulation skills, difficulty with emotional expression, greater physiological reactivity) making it more challenging to adapt effectively to the quickly changing landscape of early adolescence (Igram and Luxton 2005). As time spent with peers increases during the transition into adolescence, so does the likelihood of experiencing negative peer interactions, such as victimization by peers (via both overt and relational aggression), interpersonal problems © Springer Science + Business Media, LLC 2008 Correspondence to: Lisa M. Sontag, lsontag@ufl.edu. NIH Public Access NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript with a close friend, and being teased or hassled by one's peers. Based on prior vulnerabilities and prior experiences, adolescents often respond to such negative peer events with a range of reactions-anger, sadness, aggression, emotional suppression, etc. In turn, how an adolescent adapts to these experiences is often associated with the expression of emotional and behavioral problems (Compas et al. 2001).Much of the research examining how children and adolescents manage and adapt to stressful experiences demonstrates that coping strategies or responses to stress, more broadly, may buffer the effects of stressful experiences, ultimately reducing the likelihood of subsequent psychosocial problems (Jaser et al. 2005;Wadsworth et al. 2005). However, the stress and coping literature also suggests that the stressful situation...

show abstract

“…In Bezug auf einen früheren Reifebeginn sind sie für afroamerikanische Mädchen gegenüber weißen amerikanischen Mädchen beschrieben [37,38,39,40], ebenso für in den Niederlanden und in Deutschland lebende türkische Mädchen der 2. und 3. Generation gegenüber einheimischen Mädchen [6,20,41,42] …”

Section: Datenlageunclassified

Sexuelle Reifung von Kindern und Jugendlichen in Deutschland

Kahl

Rosario

Schlaud

2007

Bundesgesundheitsbl.

104

View full text Add to dashboard Cite

Age at Menarche and Racial Comparisons in US Girls

Abstract: Overall, US girls are not gaining reproductive potential earlier than in the past. The age at menarche of non-Hispanic black girls is significantly earlier than that of non-Hispanic white and Mexican American girls.

Cited by 603 publications

References 7 publications

Valores críticos do índice de massa corporal para classificação do estado nutricional de crianças e adolescentes brasileiros

Valores críticos do índice de massa corporal para classificação do estado nutricional de crianças e adolescentes brasileiros

Coping with Social Stress: Implications for Psychopathology in Young Adolescent Girls

Sexuelle Reifung von Kindern und Jugendlichen in Deutschland

Contact Info

Product

Resources

About