Abbreviations, descriptions and baseline probabilities used in decision tree analysis
| Branch | Description | n | Probability | ||
| Variable | Description | Value | |||
| SMPOS1 | Smear positive | 38 | pSMPOS1 | SMPOS1#/N¶ | 0.031 |
| MDRSU1 | Multidrug-resistant TB suspected | 3 | pMDRSU1 | MDRSU1§/SMPOS1 | 0.079 |
| MDRSU2 | Multidrug-resistant TB suspected | 1 | pMDRSU2 | MDRSU2§/SMNEG1+ | 0.001 |
| MDRSU3 | Multidrug-resistant TB suspected | 3 | pMDRSU3 | MDRSU3§/PCRPOS1 | 0.150 |
| MDRSU5 | Multidrug-resistant TB suspected | 1 | pMDRSU5 | MDRSU5§/PCRPOS2 | 0.167 |
| NORSU2 | Drug-sensitive TB suspected | 10 | pNORSU2 | NORSU2§/SMNEG1 | 0.008 |
| NORSU6 | Drug-sensitive TB suspected | 3 | pNORSU6 | NORSU6§/PCRNEG2 | 0.003 |
| ATYSU1 | Nontuberculous mycobacteria suspected | 21 | pATYSU1 | ATYSU1§/SMNEG1 | 0.018 |
| ATYSU2 | Nontuberculous mycobacteria suspected | 18 | pATYSU2 | ATYSU2/PCRNEG1 | 1.000 |
| ATYSU3 | Nontuberculous mycobacteria suspected | 21 | pATYSU3 | ATYSU3§/PCRNEG2 | 0.018 |
| PCRPOS1 | PCR positive | 20 | pPCRPOS1 | PCRPOS1/SMPOS2# | 0.526 |
| PCRPOS2 | PCR positive | 6 | pPCRPOS2 | PCRPOS2/SMNEG2+ | 0.005 |
| NORCO1 | Drug-sensitive TB confirmed | 3 | pNORCO1 | NORCO1/MDRSU1 | 1.000 |
| NORCO2 | Drug-sensitive TB confirmed | 16 | pNORCO2 | NORCO2/NORSU1 | 0.457 |
| NORCO3 | Drug-sensitive TB confirmed | 1 | pNORCO3 | NORCO3/MDRSU2 | 1.000 |
| NORCO4 | Drug-sensitive TB confirmed | 5 | pNORCO4 | NORCO4/NORSU2 | 0.500 |
| NORCO5 | Drug-sensitive TB confirmed | 1 | pNORCO5 | NORCO5/OLUNGSU1 | 0.001 |
| NORCO6 | Drug-sensitive TB confirmed | 3 | pNORCO6 | NORCO6/MDRSU3 | 1.000 |
| NORCO7 | Drug-sensitive TB confirmed | 16 | pNORCO7 | NORCO7/NORSU3 | 0.941 |
| NORCO10 | Drug-sensitive TB confirmed | 1 | pNORCO10 | NORCO10/MDRSU5 | 1.000 |
| NORCO11 | Drug-sensitive TB confirmed | 5 | pNORCO11 | NORCO11/NORSU5 | 1.000 |
| NORCO12 | Drug-sensitive TB confirmed | 1 | pNORCO12 | NORCO12/NORSU6 | 0.333 |
| NORCO13 | Drug-sensitive TB confirmed | 1 | pNORCO13 | NORCO13/OLUNGSU2 | 0.001 |
| ATYCO2 | Nontuberculous mycobacteria confirmed | 15 | pATYCO2 | ATYCO2/NORSU1 | 0.429 |
| ATYCO4 | Nontuberculous mycobacteria confirmed | 4 | pATYCO4 | ATYCO4/NORSU2 | 0.400 |
| ATYCO5 | Nontuberculous mycobacteria confirmed | 2 | pATYCO5 | ATYCO5/OLUNGSU1 | 0.002 |
| ATYCO8 | Nontuberculous mycobacteria confirmed | 1 | pATYCO8 | ATYCO8/NORSU6 | 0.333 |
| ATYCO9 | Nontuberculous mycobacteria confirmed | 5 | pATYCO9 | ATYCO9/OLUNGSU2 | 0.004 |
#: n=38, including 19 patients with tuberculosis (TB), 15 with nontuberculous mycobacteria and four with negative cultures
¶: baseline population, n=1,219
+: n=1,181, including eight patients with TB and 20 patients with nontuberculous mycobacteria
§: based on expert opinion