The equations to estimate ABG values from VBG values by the linear regression model were as follows: pHa = 0.591 + 0.924 x pHv, pCO2a = 0.396 + 0.868 x pCO2v, HCO3a = 1.388 + 0.889 x HCO3v.
Mô hình hồi quy tuyến tính: pHđm = 0,591 + 0,924 x pHtm; pCO2đm = 0,396 + 0,868 x pCO 2 tm; HCO3đm = 1,388 + 0,889 x HCO3tm.