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Objective: Determine the spirometry reference values and formulate an equation to predict spirometric values in the economically active population (EAP) in regions with an altitude of 0-100 m.a.s.l. Materials and Methods: Study participants were selected considering the study selection criteria. Information was collected on the variables considered in the study: Forced Vital Capacity (FVC) and Forced Expiratory Volume in the first second (FEV1), sociodemographic data and anthropometric measurements. The sample was divided into 2 groups to be able to formulate the reference equation and to assess its reliability in a validation subgroup using intraclass correlation tests, Student's t-test for paired samples, and Bland-Altman plots. Results: 1052 male participants were selected. The normal ranges for FVC and FEV1 calculated were FVC 3.48 – 5.47 and FEV1 2.83 – 4.41. Using multiple line...

Objective: Determine the spirometry reference values and formulate an equation to predict spirometric values in the economically active population (EAP) in regions with an altitude of 0-100 m.a.s.l. Materials and Methods: Study participants were selected considering the study selection criteria. Information was collected on the variables considered in the study: Forced Vital Capacity (FVC) and Forced Expiratory Volume in the first second (FEV1), sociodemographic data and anthropometric measurements. The sample was divided into 2 groups to be able to formulate the reference equation and to assess its reliability in a validation subgroup using intraclass correlation tests, Student's t-test for paired samples, and Bland-Altman plots. Results: 1052 male participants were selected. The normal ranges for FVC and FEV1 calculated were FVC 3.48 – 5.47 and FEV1 2.83 – 4.41. Using multiple line...