Interviewer instructions
Ask each member's age. It is expressed in completed years and is counted down from the date of the survey. For example, if a household is interviewed for the survey on March 14, 2003, then the age of a household member who was born on March 13, 1991 is considered to be 11. If he/she were born on March 14, 1991, the age in completed years would be 12.
The age of children less than 1 year is recorded as 0 in this question.