Study design and treatments
In this multicenter trial, patients were randomized within
a cross-over design into two treatment arms: once-daily
NVA237 50 μg followed by placebo or placebo followed
by once-daily NVA237 50 μg, for 3 weeks, with a 14-day
washout (Figure 1). At visit 1 of 2, patient eligibility was
determined, COPD treatment was adjusted if required, and
Study design and treatmentsIn this multicenter trial, patients were randomized withina cross-over design into two treatment arms: once-dailyNVA237 50 μg followed by placebo or placebo followedby once-daily NVA237 50 μg, for 3 weeks, with a 14-daywashout (Figure 1). At visit 1 of 2, patient eligibility wasdetermined, COPD treatment was adjusted if required, and
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