TABLE 4.
POSITIVE PREDICTIVE VALUE, SPECIFICITY, SENSITIVITY, AND NEGATIVE PREDICTIVE VALUE WHEN CLASSIFYING PATIENTS WITH IDIOPATHIC PULMONARY FIBROSIS BASED ON BEING AT LEAST AS OLD AS THE AGE INDICATED
| Age (yr) | PPV | Specificity | Sensitivity | NPV |
|---|---|---|---|---|
| 30 | 72 | 0 | 100 | NA |
| 35 | 72 | 5 | 99 | 67 |
| 40 | 74 | 11 | 98 | 67 |
| 45 | 74 | 16 | 95 | 55 |
| 50 | 78 | 34 | 92 | 62 |
| 55 | 83 | 58 | 80 | 54 |
| 60 | 87 | 76 | 61 | 43 |
| 65 | 91 | 89 | 43 | 38 |
| 70 | 95 | 97 | 21 | 32 |
| 75 | 100 | 100 | 6 | 29 |
| 80 | 100 | 100 | 1 | 28 |
Definition of abbreviations: NA = not applicable; NPV = negative predictive value; PPV = positive predictive value.
Data expressed as percentages.