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Fig. 4 The proportion of patients in the last 2 weeks of the study using a) low levels of as-needed medication (a maximum of 4 as-needed inhalations·week1) or b) higher levels (>4 as-needed inhalations·week1). Data are split by the average daily maintenance inhaled corticosteroid (ICS) dose, defined by guidelines [18] as: low or moderate dose, or high dose (for fluticasone patients only). SAL/FLU: salmeterol/fluticasone; BUD/FORM: budesonide/formoterol. : high maintenance ICS dose; : moderate maintenance ICS dose; : low maintenance ICS dose. #: n = 688; ¶: n = 787; +: n = 350; : n = 247.
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