Results
According to the sampling calculation made with G-Power 3.1 program, for 90% and 95% confidence interval (CI), a total of 637 subjects were included in the study (25). The 637 patients were separated into groups according to birthweight and gestational age at birth. Those who gave birth at <37 weeks were accepted as the preterm group, which was divided into 3 subgroups of 31+0-32+6 weeks, 33+0-34+6 weeks, and 35+0-36+6 weeks. Birthweight according to gestational age at birth was accepted as SGA <10th percentile, AGA 10th-90th percentile, and LGA >90th percentile.