For example, a separate group of age. The following age 13-15 years, the number of 204,994 people, aged between 16-18 years old, and 234,571 age 19-21 years, the number of 240,279 people.
The samples can be classified by age of the age between 13-15 years of 204 994 people, aged between 16-18 years, the number 234 571 and 240 279 people aged between 19-21 years.
The samples can be classified by age: age 13-15 years, were 204 994 people, aged between 16- 18 years, were 234 571 people. And between the ages of 19-21 years, were 240 279 people.