Table 3.
Response endorsement and corrected-item correlations for the FTND-R and FTND.
| Response option endorsement (%) | Corrected item-total correlations | ||||
|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | ||
| FTND-R Items | |||||
| 1. Cigarettes per day | 32 | 52 | 10 | 7 | .47 |
| 2. Smoke more first 2 hours of day | 40 | 38 | 11 | 10 | .41 |
| 3. Time to 1st cigarette | 13 | 14 | 47 | 25 | .60 |
| 4. Cigarette most hate to give up | 50 | 49 | -- | -- | .59 |
| 5. Difficult to refrain | 50 | 39 | 9 | 2 | .29 |
| 6. Smoke when ill | 26 | 54 | 11 | 9 | .49 |
| FTND Items | |||||
| 1. Cigarettes per day | 32 | 52 | 10 | 7 | .48 |
| 2. Smoke more first 2 hours of day | 40 | 60 | -- | -- | .35 |
| 3. Time to 1st cigarette | 13 | 14 | 47 | 25 | .57 |
| 4. Cigarette most hate to give up | 50 | 49 | -- | -- | .29 |
| 5. Difficult to refrain | 50 | 50 | -- | -- | .24 |
| 6. Smoke when ill | 26 | 74 | -- | -- | .36 |
Note. N = 343. For FTND-R, items 2, 5, and 6: 0 = never, 1 = sometimes, 2 = most of the time, 3 = always. For FTND: 0 = no, 1 = yes, except for item 6 in which 0 = all other cigarettes, 1 = 1st cigarette of the day. Items 1 and 4 for the FTND-R and FTND have identical scoring for both scales. For item 1 on FTND-R and FTND: 0 = less than or equal to 10, 1 = 11 – 20, 2 = 21 - 30, 3 = 31 or more. For item 4: 0 = Any other, 1 = First of the day.