ABSTRACT: Increasing age is associated with poor prognosis in patients with COPD.This analysis from the replicate Phase III OTEMTO® and TONADO® studies examined the efficacy and safety of tiotropium, a long-acting anticholinergic, combined with olodaterol, a long-acting ?2-agonist, compared to monotherapies and placebo in patients with COPD aged 40 years to <65 years, 65 years to <75 years, 75 years to <85 years, and ?85 years.In these double-blind, parallel-group, active-controlled, multicenter, randomized studies, patients received tiotropium + olodaterol 2.5/5 ?g or 5/5 ?g, tiotropium 5 ?g or 2.5 ?g (TONADO only), olodaterol 5 ?g (TONADO only), or placebo (OTEMTO only). This analysis used the approved doses of tiotropium + olodaterol 5/5 ?g, tiotropium 5 ?g, and olodaterol 5 ?g. Primary end points at 12 weeks (OTEMTO) or 24 weeks (TONADO) included St George's Respiratory Questionnaire (SGRQ) total score, forced expiratory volume in 1 second (FEV1) area under the curve from 0 hour to 3 hours (AUC0-3) response, and trough FEV1 response.A total of 1,621 patients were randomized (40 years to <65 years, n=749; 65 years to <75 years, n=674; 75 years to <85 years, n=186; ?85 years, n=12) in OTEMTO and 5,162 patients (40 years to <65 years, n=2,654; 65 years to <75 years, n=1,967; 75 to <85 years, n=528; ?85 years, n=13) in TONADO. FEV1 AUC0-3 and trough FEV1 responses improved with tiotropium + olodaterol 5/5 ?g at 12 weeks and 24 weeks compared to monotherapies or placebo for all age groups. SGRQ scores generally improved with tiotropium + olodaterol 5/5 ?g after 12 weeks in OTEMTO and improved after 24 weeks in all age groups in TONADO. In all age groups receiving tiotropium + olodaterol 5/5 ?g compared to monotherapies or placebo, transition dyspnea index scores generally improved, while rescue medication usage improved.No differences were noted in relative responses to treatment or safety when using tiotropium + olodaterol 5/5 ?g compared to monotherapies or placebo across all age groups.