TABLE 2.
Resolution of discrepant results with the proportion method on solid LJ mediuma
| Drug (concnc) | No. of initial results
|
No. of resolved resultsb
|
||||
|---|---|---|---|---|---|---|
| R with MB/BACT, S with 460TB | S with MB/BACT, R with 460TB | R with MB/BACT and PM (true resistance) | S with MB/BACT and PM (true susceptibility) | R with MB/BACT, S PM (false-resistance ME) | S with MB/BACT, R PM (false-susceptibility VME) | |
| INH (0.09) | 1 | 1 | ||||
| INH (0.4) | ||||||
| RIF (0.9) | ||||||
| EMB (3.5) | 3 | 2 | 1 | |||
| EMB (7) | 4 | 4 | ||||
| STR (0.45) | 2 | 1 | 1 | 2 | ||
| STR (0.9) | 1 | 3 | 1 | 3 | ||
| PZA (200) | 3 | 3 | ||||
| Total | 3 | 15 | 1 | 7 | 2 | 8 |
a
For an explanation of drug name abbreviations, see Table 1, footnote a. ME, major error; VME, very major error.
b
Arbiter results based on the proportion method (PM).
c
Concentrations are given in micrograms per milliliter.