On the other hand, pre-procedural albumin, estimated glomerular filtration rate, ejection fraction, hemoglobin, lymphocyte ratio were found to be lower in patients with CIN than in those without.<h4>Conclusion</h4>This meta-analysis highlighted an inverse association of PNI with the risk of CIN, which required further studies for verification.<h4>Systematic review registration</h4>[https://www.crd.york.ac.uk/prospero/], identifier [CRD42023389185]. Here, ALB is linked to cervical squamous intraepithelial neoplasia.