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  2. Relative age effect - Wikipedia

    en.wikipedia.org/wiki/Relative_age_effect

    The distribution of births according to month in the general population. The term relative age effect (RAE), also known as birthdate effect or birth date effect, is used to describe a bias, evident in the upper echelons of youth sport [1] and academia, [2] where participation is higher amongst those born earlier in the relevant selection period (and lower for those born later in the selection ...

  3. Birthday problem - Wikipedia

    en.wikipedia.org/wiki/Birthday_problem

    In probability theory, the birthday problem asks for the probability that, in a set of n randomly chosen people, at least two will share a birthday. The birthday paradox refers to the counterintuitive fact that only 23 people are needed for that probability to exceed 50%. The birthday paradox is a veridical paradox: it seems wrong at first ...

  4. File:Most common birthdays.svg - Wikipedia

    en.wikipedia.org/wiki/File:Most_common_birthdays.svg

    Description: Heat map of the birth ratio of each day to the average in the USA for people born from 1994 to 1999 according to the Center for Disease Control and 2000 to 2014 according to the Social Security Administration (top), and in Wales and England for people born from 1995 to 2014 according to the Office for National Statistics (bottom), also aggregated by month and day of month with 29 ...

  5. Birthday - Wikipedia

    en.wikipedia.org/wiki/Birthday

    There is a distinction between birthday and birthdate (also known as date of birth): the former, except for February 29, occurs each year (e.g. January 15), while the latter is the complete date when a person was born (e.g. January 15, 2001).

  6. Birthday effect - Wikipedia

    en.wikipedia.org/wiki/Birthday_effect

    The birthday effect (sometimes called the birthday blues, especially when referring specifically to suicide) is a statistical phenomenon where an individual's likelihood of death appears to increase on or close to their birthday. The birthday effect has been seen in studies of general populations in England and Wales, [1] Switzerland, [2][3 ...

  7. Influence of seasonal birth in humans - Wikipedia

    en.wikipedia.org/wiki/Influence_of_seasonal...

    Influence on medical conditions. The season in which babies are born can have an effect on their future risk of developing neurological disorders like seasonal affective disorder, bipolar depression, and schizophrenia; [2][3] as well as type I diabetes. [4] Research has shown that the season of a baby’s birth can have an effect on whether or ...

  8. List of countries by number of births - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    Country Number of births (2023) India 23,219,489 China 8,899,881 Nigeria 7,509,758 Pakistan 6,882,058 Indonesia 4,482,359 Democratic Republic of the Congo 4,369,683

  9. Category:Births by year - Wikipedia

    en.wikipedia.org/wiki/Category:Births_by_year

    This category has the following 200 subcategories, out of 2,144 total. (previous page) (next page) Animal births by year ‎ (282 C) Year of birth missing ‎ (1 C, 20,374 P) Year of birth uncertain ‎ (11,987 P) Year of birth unknown ‎ (1 C, 25,430 P) Date of birth missing ‎ (1 C, 2,815 P) Date of birth unknown ‎ (2,053 P)