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. 2018 Aug 29;13:2657–2662. doi: 10.2147/COPD.S164121

Figure 1.

Figure 1

Clinically significant changes in the 15D© QoL score anchored to a global assessment scale of 1–5, by standardized algorithm transformed into an index from 0 to 1.

Abbreviation: QoL, quality of life.