Fig 1.
Measurement of the cerebellar vermis height.
Table 1.
Demographic and baseline characteristics.
Table 2.
Fetal Cerebellar Vermis Height (mm) according to gestational age.
Fig 2.
Anderson-Darling tests and the associated diagnostic plots.
Top left, Box plot of the original measurements. Bottom left, Raw p-values associated with the Anderson-Darling test of normality for the original measurements. Top right, Box plot of the log-transformed data. Bottom right, Raw p-values associated with the Anderson-Darling test of normality for the log-transformed data. The sizes of the circles in the bubble plot are proportional to the numbers of samples (n) available during that week.
Fig 3.
95th and 5th centile curves across gestational age.
Fig 4.
Diagnostic plots for the original measurements.
Fig 5.
Diagnostic plots for the log-transformed data.
Fig 6.
GAMLSS diagnostic plots.
Fig 7.
Shape-constrained quantile regression (QR).
Estimates for the conditional median and approximate confidence bands (point-wise bands in dark gray, uniform bands in light gray) compared with the standard normal-based fit.
Fig 8.
Shape-constrained quantile regression (QR).
Estimates for a range of levels of interest and approximate confidence bands (point-wise bands in dark gray, uniform bands in light gray) compared with the standard normal-based fit.
Table 3.
Reference Table for Fetal Cerebellar Vermis Height (mm): Normal-Based Model.
Table 4.
Reference Table for Fetal Cerebellar Vermis Height (mm): Piecewise Linear Quantile Regression Model.
Table 5.
Reference Table for Fetal Cerebellar Vermis Height (mm): GAMLSS Centile Estimates.
Table 6.
Reference Table for Fetal Cerebellar Vermis Height (mm): Smooth Quantile Regression Model.
Table 7.
Median Absolute Deviation (mm) for the predictions obtained at different GAs and quantiles by the four methods considered.