Codes and Frequencies
SEC reports the secondary activity of the respondent.
SEC is only available if you select a hierarchical extract. If you request a hierarchical extract and plan to construct time use variables in your statistics package, this variable may be useful to you. Alternatively, you may use SEC to construct a time use variable as part of this system.
- All activities.
- 1965, 1975, 1985, 1993, 1995, 1998, 2003-2012