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. Author manuscript; available in PMC: 2021 Feb 19.
Published in final edited form as: Indoor Air. 2019 Dec 8;30(2):235–243. doi: 10.1111/ina.12625

Figure 1. ACQ (asthma controlled questionnaire) score by intervention for all participants (n=42).

Figure 1.

Horizontal lines in the box plots represent the minimum, 25%, 50%, 75% percentiles, and maximum. The cut-off point for ‘well-controlled’ asthma is ≤0.75 (dotted lined). H-HEPA. D-Dummy.