Comment on: Morbidity and mortality associated with the restrictive spirometric pattern: a longitudinal study

We read with interest the paper by Guerra et al 1 profiling the demographic/clinical characteristics and prospectively assessing the prognosis of subjects with a restrictive spirometric pattern enrolled in the TESAOD population-based study. The manuscript has the merit of following up a large number of patients for 14 years and investigating how selected co-morbidities are relevant to survival.2 The results of this study deserve comparison with those published in 2008 by our research group on 1265 subjects aged 65–97 years.3 First, in an older population (mean age 73.4 …

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