| # | Name | Location | Type | Details | Index | Description |
|---|---|---|---|---|---|---|
| .01 | type of tobacco user | 0;1 | SET OF CODES | 1:CIGARETTE 2:CIGARS 3:PIPE 4:CHEWING TOBACCO 5:SNUFF 6:MARIJUANA 7:MORE THAN 1 TYPE 8:UNKNOWN | This is the code that describes the patient's tobacco use. | |
| 1 | pack-years | 0;2 | NUMERIC | Enter the number of packs smoked per day times the number of years. Example: 2 packs per day for 10 years equals 20 pack-years. | ||
| 2 | yr quit tobacco use | 0;3 | DATE-TIME | This is the year in which the patient quit using tobacco. |
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