Objective To evaluate the precipitating factors and symptoms of primary spontaneous pneumomediastinum (PSPM) and to assess the factors related with recurrent spontaneous pneumomediastinum (RSPM). Meth
SD = standard deviation; PFT = pulmonary function test; PAP = personalised action plan; PEF = peak expiratory flow; ns = not significant; a p < 0.01, b p < 10–2, c p < 10–3, d p < 10- Characteristics
ap-value estimated, using negative binomial regression, for a distribution of exacerbations between patients with a specific grade (MRC = 1, no dyspnoea is a referent category). Abbreviation: MRC, Med
