Time to first COPD exacerbation was slightly longer in the CVT-R group compared to the other treatment groups, although it did not reach statistical significance (CVT-R versus CVT-MDI, P = 0.57; CVT-R versus I + A, P = 0.22).
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COPD patient satisfaction with ipratropium bromide/albuterol delivered via Respimat: a randomized, controlled study.
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0.5700
0.5700