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Proportion of patients (%) with respiratory events suggestive of administration-related bronchoconstriction during the 30 minutes immediately after inhalation of study treatment on each test day. Events are shown by treatment for Categories B–D (no Category A events occurred), and patients are grouped according to the worst category of event experienced. The number of patients tested on each day fell as the study progressed (see Table 4). See text for definition of categories.
