birthday effect etymology

English word birthday effect comes from English birthday

Detailed word origin of birthday effect

Dictionary entryLanguageDefinition
birthday English (eng) (intransitive, informal) To celebrate one's birthday. The anniversary of the day on which someone is born. [From 1570s]. The anniversary of the day on which something is created.. The date on which someone is born or something is created, more commonly called birthdate or date of birth.
birthday effect English (eng) (statistics) A statistical phenomenon where an individual's likelihood of death appears to increase on or close to their birthday.