Fig. 1From: Restrictive spirometric pattern and true pulmonary restriction in a general population sample aged 50 - 64 yearsSensitivity and specificity of restrictive spirometric pattern (RSPLLN) defined as FEV1/FVC ≥ LLN and FVC < LLN after bronchodilation using locally published Eqs. (17–18) in relation to true pulmonary restriction defined as TLC < LLN applying increasing percentiles (cut-off values) of FVCBack to article page