Association between preoperative neutrophil-to-lymphocyte ratio and malignant intraductal papillary mucinous neoplasms: A systematic review and meta-analysis

Figure 3 Subgroup analysis of the association between elevated neutrophil-to-lymphocyte ratio and malignant intraductal papillary mucinous neoplasms. A: Japan subgroup; B: Non-Japan subgroup; C: Neutrophil-to-lymphocyte ratio cut-off < 3 subgroup; D: Neutrophil-to-lymphocyte ratio cut-off ≥ 3 subgroup; E: Malignancy defined as invasive carcinoma alone; F: Malignancy defined as high-grade dysplasia and/or invasive carcinoma; G: Sample size < 100 subgroup; H: Sample size ≥ 100 subgroup. OR: Odds ratio; CI: Confidence interval; SE: Standard error; HK: Hartung-Knapp.