Normative Data for Penile Length in Turkish Newborns

BACKGROUND Local normative data for penile size will aid physicians in clinical practice. There are no studies on stretched penile length (SPL) in newborn Turkish boys. OBJECTIVE To establish normative data for SPL of newborn Turkish boys and compare these with data from different countries. METHODS 514 newborn Turkish boys, who were not small for gestational age (SGA) or premature, were included in this cross-sectional study. SPLs of the newborns were measured by the same investigator. The correlations between SPL and gestational age, weight, length, and head circumference were evaluated. RESULTS The 3(rd) percentile value for SPL was found as 3.00 cm in these Turkish newborns. Positive correlations were shown between SPL and height (r=0.240, p<0.001), weight (r=0.251, p<0.001), and head circumference (r=0.235, p<0.001). Multiple linear regression analysis showed that SPL positively correlated with height and head circumference (p=0.021 and p= 0.042, respectively). CONCLUSIONS This is the largest study on SPL in newborns from our country. This normative data can be used in clinical practice for defining micropenis.