Results 51 to 60 of about 81,358 (273)
Over the edge: Empirical evidence for the cliff‐edge model of obstetric selection
The Anatomical Record, EarlyView.Abstract The cliff‐edge model of obstetric selection maintains that larger neonates and smaller birth canals confer a positive selective advantage until labor becomes obstructed and vaginal delivery is no longer possible, eliciting an abrupt reduction in fitness.
Laura M. Watson +6 more
wiley +1 more source
Weight and age at menarche. [PDF]
Archives of Disease in Childhood, 1989 In the National Child Development Study (1958 cohort) information on their age at menarche and their weights and heights measured at 7, 11, and 16 years was available for 4427 girls. The distribution of age at menarche was not influenced by social class. Weight adjusted for height did not play an important part in the timing of sexual maturation of the
O, Stark, C S, Peckham, C, Moynihan
openaire +2 more sources
Genetic Regulation of Puberty Timing in Humans. [PDF]
, 2015 Understanding the regulation of puberty timing has relevance to developmental and human biology and to the pathogenesis of various diseases. Recent large-scale genome-wide association studies on puberty timing and adult height, body mass index (BMI) and ...
Day, Felix R, Ong, Ken K, Perry, John RB
core +2 more sources
The Anatomical Record, EarlyView.Abstract The preauricular sulcus has long been debated as a pelvic feature variably attributed to obstetric stress, ligamentous traction, and broader biomechanical processes. To clarify its determinants, we analyzed 409 adult individuals from three archeological and one early modern skeletal collection from the Iberian Peninsula, integrating graded ...
Rebeca García‐González +5 more
wiley +1 more source
The Age At Menarche In Nigerian Adolescents From Two Different Socioeconomic Classes [PDF]
, 2008 Menarcheal age was studied in 900 girls, half of which were from middle class families and the other half from low income class families from the Niger delta region of Nigeria.
Ofuya, Zuleat Millicent
core +1 more source
Early Menarche, Nulliparity, and the Risk for Premature and Early Natural Menopause [PDF]
, 2017 Study question: How the timing of menarche and parity link with premature and early natural 42 menopause? Summary answer: Early menarche (≤11 years) is a risk factor for both premature menopause (final 44 menstrual period, FMP
Alissa Goodman +25 more
core +4 more sources
Arthroscopy, EarlyView.Purpose To evaluate whether systemic estrogen‐only, progestin‐only, or combined hormonal contraceptives (HCs) are associated with increased risk of shoulder pathologies in reproductive‐age females. Methods A retrospective cohort study of female patients presenting to clinic from 2013 to 2020 and aged 13‐50 with 5 years of follow‐up was conducted using ...
Argen Omurzakov +7 more
wiley +1 more source
Low Digit Ratio Predicts Early Age at Menarche in Colombian Schoolgirls [PDF]
, 2012 Background: The ratio between the lengths of the second and fourth fingers (digit ratio: 2D : 4D), a purported negative correlate of prenatal androgen exposure, has been inversely related to age at menarche.
Arsenault +34 more
core +1 more source
Late‐Onset Rheumatoid Arthritis and Air Pollution in the Multiethnic Cohort
Arthritis &Rheumatology, EarlyView.Objective To evaluate the effects of ambient air pollution on rheumatoid arthritis (RA) incidence in a racially and ethnically diverse population. Methods This analysis included 42,152 California Multiethnic Cohort participants, aged ≥65 years (>70% African American and Latino adults) who were enrolled in the Fee For Service component of Medicare (2001–
Anna H. Wu +14 more
wiley +1 more source
Age at menarche and risk of colorectal adenoma [PDF]
The Korean Journal of Internal Medicine, 2019 Background/Aims Limited data are available regarding the association between age at menarche and the risk of colorectal adenoma. Therefore, we aimed to evaluate the relationship between reproductive factors including age at menarche and the risk of ...
Nam Hee Kim +5 more
doaj +1 more source