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  • Title: Efficacy of once-daily indacaterol relative to alternative bronchodilators in COPD: a patient-level mixed treatment comparison.
    Author: Cope S, Capkun-Niggli G, Gale R, Lassen C, Owen R, Ouwens MJ, Bergman G, Jansen JP.
    Journal: Value Health; 2012 May; 15(3):524-33. PubMed ID: 22583463.
    Abstract:
    OBJECTIVE: Indacaterol was evaluated versus placebo, formoterol, and salmeterol in randomized controlled trials. No direct comparisons, however, are available for indacaterol 150 μg with formoterol or indacaterol 300 μg with salmeterol. Indacaterol trial evidence was synthesized to provide coherent estimates of indacaterol 150 μg and indacaterol 300 μg relative to formoterol, salmeterol, and tiotropium. METHODS: Four randomized controlled trials were combined with Bayesian mixed treatment comparisons by using individual patient-level data. End points of interest were trough forced expiratory volume in 1 second (FEV(1)), St. George's Respiratory Questionnaire (SGRQ) total score and response (≥ 4 points), and Transition Dyspnea Index total score and response (≥ 1 point). RESULTS: Indacaterol 150 μg demonstrated a higher FEV(1) than did formoterol at 12 weeks and 6 months (0.10 L difference; 95% credible interval [CrI] = 0.06-0.14), as did indacaterol 300 μg versus salmeterol (0.06 L difference at 12 weeks; CrI = 0.02-0.10; 0.06 L at 6 months; CrI = 0.02-0.11). Regarding SGRQ, indacaterol 150 μg demonstrated a comparable proportion of responders versus formoterol, as did indacaterol 300 μg versus salmeterol. In comparison to tiotropium, indacaterol 150 μg demonstrated a greater proportion of responders (odds ratio = 1.52 at 12 weeks; CrI 1.15-2.00). For Transition Dyspnea Index, indacaterol 150 μg and formoterol showed a similar response. Indacaterol 300 μg was more efficacious than salmeterol (odds ratio = 1.65 at 12 weeks; CrI 1.16-2.34). Overall, indacaterol 150 μg showed the greatest efficacy for SGRQ and indacaterol 300 μg for FEV(1) and Transition Dyspnea Index. CONCLUSION: Indacaterol is expected to be comparable to formoterol, salmeterol, and tiotropium, providing higher FEV(1) than formoterol and salmeterol and greater improvement in the SGRQ total score than tiotropium. Indacaterol 150 μg provided comparable improvement in dyspnea, while indacaterol 300 μg demonstrated the greatest response overall.
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