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Table 2 Asthma control as defined by the Global Initiative for Asthma guidelines [10]

From: Breaking new ground: challenging existing asthma guidelines

Minimal (ideally no) chronic symptoms, including nocturnal symptoms
Minimal (infrequent) exacerbations
No emergency visits
Minimal (ideally no) need for p.r.n. (as-needed) β2-agonist
No limitations on activities, including exercise
PEF circadian variation of less than 20%
(Near) Normal PEF
Minimal (or no) adverse effects from medicine
  1. PEF, peak expiratory flow.