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The sensitivity and specificity of HITEx for smoking status extraction.
| Current Smoker | Never Smoked | Denies Smoking | Past Smoker | Not mentioned/Insufficient Data | |
| Sensitivity | 90.32% | 60.00% | 100.00% | 77.78% | 94.57% |
| Specificity | 92.56% | 98.60% | 99.34% | 99.26% | 95.08% |
