Calculate Unweighted Deming Regression and Estimate Standard Errors

Calculate Unweighted Deming Regression and Estimate Standard Errors

mc.deming(X, Y, error.ratio)

Arguments

X

measurement values of reference method.

Y

measurement values of test method.

error.ratio

ratio of measurement error of reference method to measurement error of test method.

Value

a list with elements

b0

intercept.

b1

slope.

se.b0

respective standard error of intercept.

se.b1

respective standard error of slope.

xw

average of reference method values.

References

Linnet K. Evaluation of Regression Procedures for Methods Comparison Studies. CLIN. CHEM. 39/3, 424-432 (1993).

Linnet K. Estimation of the Linear Relationship between the Measurements of two Methods with Proportional Errors. STATISTICS IN MEDICINE, Vol. 9, 1463-1473 (1990).