To the Editor:

In our article entitled "New reference values for maximal respiratory pressures in the Brazilian population", which proposed reference values for MIP and MEP and was published in a recent issue of the Brazilian Journal of Pulmonology,(1) we inadvertently erred in one of the equations, specifically in that for MIP in males.

We apologize for this error, and here we show the corrected equation:

Incorrect: Males: MIP: y = −1.24 × age + 232.37 (R2 = 60.73; RSE = 356.58; SEE = 18.88; 5th percentile = −23.38)

Correct: Males: MIP: y = −1.14 × age + 149.33 (R2 = 0.52; RSE = 422.16; SEE = 20.54; 5th percentile= −130.00)

Therefore, the full set of equations should be as below:

Males:

MIP: y = −1.14 × age + 149.33 (R2 = 0.52; RSE = 422.16; SEE = 20.54;
5th percentile= −130.00)

MEP: y = −1.26 × age + 183.31 (R2 = 48.9; RSE = 586.81; SEE = 24.22;
5th percentile = −38.95)

Females:

MIP: y = −0.46 × age + 74.25 (R2 = 24.8; RSE = 300.72; SEE = 17.20;
5th percentile = −28.83)

MEP: y = −0.68 × age + 119.35 (R2 = 35.14; RSE = 315.33; SEE = 17.76;
5th percentile = −23.24).








Dirceu Costa
Adjunct Professor. Postgraduate Program in Physiotherapy,
Universidade Federal de São Carlos - UFSCar, Federal University of São Carlos - São Carlos, Brazil
Professor. Postgraduate Program in Rehabilitation Science, Universidade Nove de Julho - UNINOVE - São Paulo, Brazil

Helena Amaral Gonçalves
Physiotherapist. Student in the Continuing Education Course in Respiratory Therapy, Universidade Estadual de Campinas - Unicamp, State University at Campinas - Campinas, Brazil

Luciana Peraro de Lima
Physiotherapist. Universidade Metodista de Piracicaba - UNIMEP, Methodist University at Piracicaba - Piracicaba, Brazil

Daniela Ike
Physiotherapist. Preventive Medicine Program, Unimed de Piracicaba, Piracicaba, Brazil

Karina Maria Cancelliero
PhD in Physiotherapy. Universidade Federal de São Carlos - UFSCar, Federal University of São Carlos - São Carlos, Brazil

Maria Imaculada de Lima Montebelo Professor. Universidade Metodista de Piracicaba - UNIMEP, Methodist University at Piracicaba - Piracicaba, Brazil


References


1. Costa D, Gonçalves HA, de Lima LP, Ike D, Cancelliero KM, Montebelo MI. New reference values for maximal respiratory pressures in the Brazilian population. J Bras Pneumol. 2010;36(3):306-12.