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Fig. 1 | Respiratory Research

Fig. 1

From: Treatment patterns and cost of exacerbations in patients with chronic obstructive pulmonary disease using multiple inhaler triple therapy in South Korea

Fig. 1

Study methodology. A Study design. Index date was the date of MITT initiation, defined as the first day with overlapping supply of all MITT components. The baseline period comprised the 12 month-period prior to index date, and the observation period comprised the ≥ 12-month period from index date until the end of data availability (≥ 12 months, until the cut-off for data availability [31 December 2018]). MITT: multiple inhaler triple therapy; NHI: National Health Insurance. B Illustration of MITT episodes. Each black bar represents a dispensing for a component inhaler of MITT. Each region shaded in grey represents an episode of MITT in which there was continuous overlap of ≥ 1 day for all three MITT components; MITT episodes were considered to be one extended MITT episode if the MITT episodes were < 30 days apart (grace period). MITT: multiple inhaler triple therapy

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