Table 5. Se, Sp, PPV, and NPV of tulathrymycin mic classification for M. haemolytica and P. multocida isolates collected from DNS samples from high-risk feeder heifers.
| Susceptible vs Non-Susceptible Isolates | |||||
| Sample Period | Isolate | PPV (S) | NPV (I&R) | Sensitivity (Failures) | Specificity (Successes) |
| Day-0 | M. haemolytica | .50 | 1.00 | .98 | .04 |
| P. multocida | .43 | .42 | 1.00 | .29 | |
| 1st BRD-Treatment | M. haemolytica | 1.00 | .50 | .04 | 1.00 |
| P. multocida | .42 | .40 | .29 | .53 | |
| Resistant vs Non-Resistant Isolates | |||||
| Isolate | PPV (R) | NPV (S&I) | Sensitivity (Successes) | Specificity (Failures) | |
| Day-0 | M. haemolytica | NA | .51 | NA | .98 |
| P. multocida | NA | .57 | NA | .97 | |
| 1st BRD-Treatment | M. haemolytica | .50 | .33 | .94 | .03 |
| P. multocida | .56 | .50 | .53 | .53 | |