Codes and Frequencies
For sample adults age 18 and older who have used snuff at least 20 times in their lives, or didn't know if they'd used snuff 20 times in 1998, and, in all other years, for sample adults who have ever used snuff, SNUFFREQNOW indicates whether the sample person now uses snuff every day, some days, or not at all.
Please refer to the "universe" tab for more information about changes in the universe. For related variables, please use the IPUMS NHIS search function and drop-down menus.
- 1998: Sample adults age 18+ who had used snuff at least 20 times in their lives or didn't know if they'd used snuff 20 times.
- 2000; 2005; 2010: Sample adults age 18+ who ever used snuff.
- 1998, 2000, 2005, 2010
- 1998, 2000, 2005, 2010 : SAMPWEIGHT