Studies shorter:longer | Shorter events/total | Longer events/total | Propensity score matched multivariable meta-regression | |||
Pairs | aOR (95% CI) | aRD (95% CI) | ||||
Overall | 9:38 | 118/2282 | 112/1926 | 1926 | 2.0 (0.96–4.0)+ | 0.02 (0.00–0.05)+ |
HIV status strata | ||||||
People living with HIV | 5:10 | 24/295 | 55/750 | 295 | 2.1 (0.6–7.7) | 0.03 (−0.02–0.07) |
HIV negative | 9:38 | 94/1978 | 56/1162 | 1162 | 1.9 (0.9–4.0) | 0.02 (−0.00–0.04) |
Extensiveness | ||||||
Extensive | 9:36 | 91/1969 | 83/1320 | 1320 | 1.2 (0.6–2.6) | 0.01 (−0.02–0.03) |
Not extensive | 8:26 | 20/259 | 28/602 | 259 | 2.9 (0.8–10) | 0.05 (0.00–0.09) |
Pyrazinamide DST# | ||||||
Resistant | 5:26 | 36/270 | 11/349 | 270 | 10.7 (1.8–64.5)¶,+ | 0.12 (0.07–0.16)+ |
Susceptible | 5:23 | 12/248 | 13/428 | 248 | 1.3 (0.3–6.7) | 0.01 (−0.04–0.05) |
Ethionamide/prothionamide DST# | ||||||
Resistant | 5:26 | 23/249 | 4/149 | 149 | 3.9 (1.0–15.1)¶,+ | 0.07 (−0.01–0.16)+ |
Susceptible | 4:30 | 7/660 | 26/613 | 613 | 0.1 (0.0–1.5) | −0.03 (−0.05– −0.01) |
Ethambutol DST# | ||||||
Resistant | 8:37 | 39/692 | 27/554 | 554 | 3.1 (1.8–5.3)¶,+ | 0.09 (0.04–0.13)+ |
Susceptible | 3:23 | 1/297 | 9/334 | 297 | 0.2 (0.0–1.9) | −0.02 (−0.04–0.01) |
Data are presented as n, unless otherwise stated. aOR: adjusted odds ratio; aRD: adjusted risk difference; DST: drug susceptibility testing. All models adjusted for age, sex, HIV status, previous treatment with first-line tuberculosis medications and extensiveness of disease. Results were adjusted as described in the Methods. #: analyses restricted to patients with DST-confirmed fluoroquinolone susceptibility (i.e. excluding those with no DST data for fluoroquinolones); ¶: aOR calculated from fixed effect model; +: confidence intervals suggestive of increased odds or risk of failure or relapse with the shorter regimen.