Notes
The household and personal questionnaires asked for date of birth and, if not known, age in years. The special enumeration questionnaire included columns for both age in years and date of birth. Date of birth was requested because it is easier for some people to remember (rather than having to calculate age) and to try to minimise the tendency for people to round off responses to the nearest decade. If both age and date of birth were given, date of birth was accepted if the responses were inconsistent. The question required the age in completed years. The household questionnaire included the following instruction: ‘For babies under one year, write “0” years, if date of birth is not known.’
Responses of 120 or greater were set to ‘Unspecified’.