Evidência Nível B
Estudos controlados e randomizados (RCTs) com <200 participantes, RCTs com falhas metodológicas com >200 participantes, revisões sistemáticas (SRs) ou estudos observacionais (coorte) de boa qualidade.
Symptom severity: there is medium-quality evidence that low-dose inhaled corticosteroids are more effective than placebo at improving symptoms and at reducing the need for short-acting bronchodilators in people with mild, moderate, or severe asthma. Low-dose inhaled corticosteroids are also more effective than placebo at improving lung function (FEV1 and peak expiratory flow rate [PEFR]) in people with asthma.
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