LCN2 and cervical squamous intraepithelial neoplasia: The results of urine NGAL in the hierarchical summary receiver operating characteristic model were β = -0.14 (95%CI: -1.01–0.73, Z = -0.31, P = 0.753), which reflected that the shape of the SROC curve was symmetric; and λ = 3.08, which indicated that the diagnostic value of urine NGAL for CIN was moderate.