Fig. 3From: Comparison of first trimester dating methods for gestational age estimation and their implication on preterm birth classification in a North Indian cohortComparison of data chosen to be reference data for the development of dating formula by (a) clinical and (b) data-driven (DBSCAN) approaches. The x-axis is CRL in cm, and the y-axis is GA in weeks (LMP-based are datapoints, Garbhini-GA1 is regression line). After filtering, the data points selected (TRUE) are coloured black and points not selected (FALSE) are whiteBack to article page