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  2. Advanced maternal age - Wikipedia

    en.wikipedia.org/wiki/Advanced_maternal_age

    In the US, the average age at which women bore their first child advanced from 21.4 years old in 1970 [11] to 26.9 in 2018. [4]The German Federal Institute for Population Research claimed in 2015 the percentage for women with an age of at least 35 giving birth to a child was 25.9%.

  3. Age and female fertility - Wikipedia

    en.wikipedia.org/wiki/Age_and_female_fertility

    The average age of a girl's first period is 12 to 13 (12.5 years in the United States, [6] 12.72 in Canada, [7] 12.9 in the UK [8]) but, in postmenarchal girls, about 80% of the cycles are anovulatory in the first year after menarche, which declines to 50% in the third year, and to 10% by the sixth. [9]

  4. Gestational age - Wikipedia

    en.wikipedia.org/wiki/Gestational_age

    In obstetrics, gestational age is a measure of the age of a pregnancy taken from the beginning of the woman's last menstrual period (LMP), [1] or the corresponding age of the gestation as estimated by a more accurate method, if available.

  5. Pregnancy over age 50 - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_over_age_50

    Menopause typically occurs between 44 and 58 years of age. [8] DNA testing is rarely carried out to confirm claims of maternity at advanced ages, but in one large study, among 12,549 African and Middle Eastern immigrant mothers, confirmed by DNA testing, only two mothers were found to be older than fifty; the oldest mother being 52.1 years at conception (and the youngest mother 10.7 years old).

  6. Timeline of human prenatal development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_prenatal...

    A neural groove (future spinal cord) forms over the notochord with a brain bulge at one end. Neuromeres appear. (day 18 of fertilization. [1]) Somites, the divisions of the future vertebra, form. (day 20 of fertilization. [1]) Primitive heart tube is forming. Vasculature begins to develop in embryonic disc. (day 20 of fertilization. [1])

  7. Maternal physiological changes in pregnancy - Wikipedia

    en.wikipedia.org/wiki/Maternal_physiological...

    Pregnant women fall at a similar rate (27%) to women over age of 70 years (28%). Most of the falls (64%) occur during the second trimester. Additionally, two-thirds of falls are associated with walking on slippery floors, rushing, or carrying an object. [38] The root causes for these falls are not well known.

  8. Talk:Pregnancy over age 50 - Wikipedia

    en.wikipedia.org/wiki/Talk:Pregnancy_over_age_50

    70 years 1762 Unidentified: Her husband Natural conception Switzerland Albrecht von Haller (October 16, 1708 – December 12, 1777), German Swiss anatomist, physiologist, naturalist and poet, reported the case of a woman who had given birth in 1762 to a son naturally conceived with her husband at the already advanced age of 70 years. 70 years 1880

  9. Gravidity and parity - Wikipedia

    en.wikipedia.org/wiki/Gravidity_and_parity

    For example, a pregnant female who carried one pregnancy to term with a surviving infant; carried one pregnancy to 35 weeks with surviving twins; carried one pregnancy to 9 weeks as an ectopic (tubal) pregnancy; and has three living children would have a TPAL annotation of T1, P1, A1, L3. This could also be written as 1-1-1-3.

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