Fitting a linear relationship with confidence intervals by correlation.
The study of the empirical linear relationship between two measured variables should use correlation analysis which treats the variables symmetrically, rather than linear regression which inappropriately assumes a dependent and an independent variable. An APL computer program calculates the best fitting bivariate Gaussian distribution and plots the data with the superimposed straight line relationship and the confidence interval.
D001824:Body Constitution; D000013:Congenital Abnormalities / Q000175:diagnosis*; D003936:Diagnosis, Computer-Assisted; D005260:Female; D006257:Head / Q000033:anatomy & histology; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012016:Reference Values; D014463:Ultrasonography