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. 2022 Jun 16;12(6):e056295. doi: 10.1136/bmjopen-2021-056295

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© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/.

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Study procedures during baseline evaluation and follow-up in phases I (A) and II (B) of study. Follow-up in phase I was for 12 months and in phase II for a minimum of 6 months. ACT, Asthma Control Questionnaire (>11 years); AFCQ, Asthma Family Costs Questionnaire; ARQ, Asthma Recurrence Questionnaire; BaselineQ, general questionnaire based on phase II of the International Study of Asthma and Allergies in Childhood; C-ACT, Child Asthma Control Questionnaire (≥12 years); FeNO, fractional exhaled nitric oxide; NAKQ, Newcastle Asthma Knowledge Questionnaire.