Log rank test results of variables to determine those to be included in the Cox proportional hazards model
| Variable | χ2 | df | p value |
|---|---|---|---|
| DF=degrees of freedom. | |||
| *Variables to be included in the model. | |||
| Sex* | 1.3022 | 1 | 0.2538 |
| Born in UK | 0.0003 | 1 | 0.9864 |
| Time in UK | 1.4046 | 2 | 0.4954 |
| Ethnic origin | 3.4189 | 3 | 0.3314 |
| Lymph node | 0.1208 | 1 | 0.7281 |
| Fever | 1.1086 | 1 | 0.2924 |
| Weight | 0.0439 | 1 | 0.8340 |
| Haemoptysis | 0.0206 | 1 | 0.8859 |
| Short of breath | 0.2421 | 1 | 0.6227 |
| Chest pain | 0.4392 | 1 | 0.5075 |
| Immunocompromised status* | 9.0407 | 1 | 0.0026 |
| HIV status* | 9.4650 | 1 | 0.0021 |
| Rifampicin, isoniazid, pyrazinamide given before MDR diagnosis | 0.1488 | 1 | 0.6997 |
| 4th drug given before MDR diagnosis* | 1.4610 | 1 | 0.2268 |
| Radiological improvement | 23.5794 | 1 | 0.0001 |
| 3 negative smears | 7.9073 | 1 | 0.0049 |
| 1 negative culture | 15.8246 | 1 | 0.0001 |
| Prior TB | 0.4023 | 1 | 0.5259 |
| Appropriate 3 drugs given* | 18.7015 | 1 | 0.0001 |
| Appropriate 4 drugs given | 0.6631 | 1 | 0.4155 |
| Appropriate 5 drugs given | 0.1386 | 1 | 0.7096 |
| Pyrazinamide resistance* | 2.9167 | 1 | 0.0877 |
| Ethambutol resistance* | 4.2066 | 1 | 0.0403 |
| Streptomycin resistance | 0.6031 | 1 | 0.4374 |
| Cipro/oflox resistance | 0.2096 | 1 | 0.6471 |
| Prothionamide resistance* | 2.1925 | 1 | 0.1387 |
| Amikacin resistance* | 1.4429 | 1 | 0.2297 |
| Cycloserine resistance | 0.0343 | 1 | 0.8530 |
| Clarithro/azithro resistance | 0.6988 | 1 | 0.4032 |
| Capreomycin resistance | 0.2612 | 1 | 0.6093 |
| PAS resistance | 0.6206 | 1 | 0.4308 |
| No of drugs resistant* | 7.5056 | 5 | 0.1857 |
| Age group* | 5.3524 | 2 | 0.0688 |
| Pulmonary status | 1.1631 | 1 | 0.2808 |
| Culture produced within 30 days* | 1.7833 | 1 | 0.1817 |
| ID & MDR produced within 60 days* | 2.0806 | 1 | 0.1492 |
| Combination drugs given | 0.2148 | 1 | 0.6431 |