Table 3.
Performance of NLP and PPI in identifying accurate smoking status.
| MANUAL | UNKNOWN | EXACT MATCH | |||||
|---|---|---|---|---|---|---|---|
| CURRENT SMOKER | FORMER SMOKER | SMOKER CURRENT STATUS UNKNOWN | NEVER | ||||
| NLP | Current smoker | 85 | 15 | 83 | 11 | 0 | 0.51 |
| Former smoker | 36 | 50 | 22 | 39 | 0 | ||
| Smoker current status unknown | 7 | 9 | 4 | 3 | 0 | ||
| Never | 2 | 5 | 1 | 124 | 0 | ||
| Unknown | 3 | 2 | 3 | 7 | 0 | ||
| PPI | Current smoker | 42 | 17 | 49 | 40 | 0 | 0.42 |
| Former smoker | 48 | 25 | 28 | 7 | 0 | ||
| Smoker current status unknown | 2 | 4 | 8 | 4 | 0 | ||
| Never | 31 | 33 | 18 | 129 | 0 | ||
| Unknown | 0 | 0 | 0 | 0 | 0 | ||
| NLP | PPI | Current smoker | 88 | 17 | 86 | 13 | 0 | 0.53 |
| Former smoker | 41 | 52 | 23 | 39 | 0 | ||
| Smoker current status unknown | 7 | 9 | 6 | 5 | 0 | ||
| Never | 4 | 7 | 5 | 139 | 0 | ||
| Unknown | 0 | 0 | 0 | 0 | 0 | ||
Note: Numbers in bold indicate accurate results.