Category	The standard	Category	The standard	Age interval (year)
Juveniles	The United Nations ages	Baby	Chinese children ages	0 - 1
		Infancy		2 - 3
		Pre-school age		4 - 6
		School age		7 - 12
		Teenagers		13 - 18
Youth		Young adults	The United Nations ages	19 - 25
Youth		Youth	The United Nations ages	26 - 45
Mid adults		Mid adults	The United Nations ages	46 - 59
The elderly		The elderly	The United Nations ages	60 - 75