Primary care respiratory journal : journal of the General Practice Airways Group
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Multicenter Study
Spirometrically-defined restrictive ventilatory defect: population variability and individual determinants.
A spirometrically-defined restrictive ventilatory defect is a common finding when performing spirometry. ⋯ A restrictive ventilatory defect in spirometry is a common finding (12.7%) with a highly variable geographical distribution (range 3.7) whose population burden is important in terms of quality of life and activities of daily living and similar to that of an obstructive pattern compatible with COPD.