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Codes

This is a 3-digit numeric variable.

Description

AGE reports the age of respondents.

When age is recorded in categories, a mid-point of each age group is assigned, for example, 17 for age group 15-19. When surveys only included the year of birth of respondents, AGE was computed by subtracting the year of birth from the year of the survey. To protect the anonymity of the oldest respondents, age is topcoded. Users should note differences in topcodes across countries and years.

Comparability — Index

GENERAL
Canada
Finland
Netherlands
United States

Comparability

AGE is constructed differently across samples.

Topcodes apply as follows:

80+ coded as 80 

Canada: 2010
Netherlands: 1975, 1980, 1985, 1990, 1995, 2000, 2005
Spain: 2002, 2009
United Kingdom: 1974, 1983, 1987, 1995, 2000, 2005
United States: 1965, 1975, 1985, 1993, 1995, 1998, 2003-2012

90+ coded as 90 

Austria: 1992
France: 1985, 1998
Finland: 1979

Comparability — Canada [top]

In 2010, AGE is not an exact measure of a diarist's age. The original variable data indicates the respondent's age in 15 categories, and is recoded in the following way:

AGEGR5 - AGE (recoded)
15 to 17 - 16
18 to 19 - 18
20 to 24 - 22
25 to 29 - 27
30 to 34 - 32
35 to 39 - 37
40 to 44 - 42
45 to 49 - 47
50 to 54 - 52
55 to 59 - 57
60 to 64 - 62
65 to 69 - 67
70 to 74 - 72
75 to 79 - 77
80 years and over -80

Comparability — Finland [top]

In 1979, 16 diaries from 8 diarists (2 diaries per diarist) had missing ages which were recoded as 18 years old. There is some reason to suspect that they may be young adults - all of these diarists are unmarried, none report any children, none are employed or in the workforce (i.e. not self-described unemployed), 2 report being students, and 4 report a significant amount of time in school and doing homework. However, 6 of 8 of these diarists report living in single person households so it is unlikely that they are children (i.e. under the age of 18). Therefore, these cases were coded as 18 years. To adjust the statistical weights or to examine these cases more closely the person (PERSID) identifiers are 60430, 60440, 60450, 60460, 60470, 60480, 60490, and 60500.

Comparability — Netherlands [top]

For 2000 and 2005, age at the time of the survey is not available though year and month of birth are available. AGE is the difference between the survey year and birth year.

Comparability — United States [top]

For 1998-2001, the 1999-2001 NSP survey did not initially ask the respondent's age. The survey team did, however, try to recontact participants to ask for their ages; 387 individuals could not be located or did not reply.

Universe

  • All persons respondents.

Availability

  • Austria: 1992
  • Bulgaria: 2001
  • Canada: 2010
  • Finland: 1979, 2009
  • France: 1985, 1998
  • Hungary: 2009
  • Israel: 1991
  • Italy: 2002
  • Netherlands: 1975, 1980, 1985, 1990, 1995, 2000, 2005
  • Spain: 2002, 2009
  • United Kingdom: 1974, 1983, 1987, 1995, 2000, 2005, 2014
  • United States: 1965, 1975, 1985, 1993, 1995, 1998, 2003-2015