Meta-analysis of the Relationship Between Neutrophil to Lymphocyte Ratio and Nasal Polyps

AbstractOur study aimed to enhance understanding of nasal polyp pathophysiology by reviewing the data for variations of NLR values between patients with nasal polyp and healthy controls. We searched Web of Science, PubMed, ProQuest, and Scopus up to 2 April 2023. The search strategy was not limited to any specific language. Twelve studies were included in our study. Of them, ten studies, involving 898 nasal polyp patients and 590 control patients, were included in the meta-analysis. The NLR levels in nasal polyp patients were statistically greater than in the control group (SMD  = 0.56; 95%CI 0.04–1.08,P = 0.036). Subgroup analysis based on study design yielded that patients with nasal polyp exhibited significantly higher NLR levels than healthy controls in retrospective studies (SMD = 0.83; 95%CI 0.30–1.35, P = 0.002) but not in prospective studies (SMD = 0.10; 95%CI = −1.03 to 1.2 3, P = 0.85). Also, we found that the NLR levels in nasal polyp patients were significantly higher than healthy controls in high-quality studies (SMD = 1.00; 95%CI 0.38–1.62,P = 0.002) but not in low-quality studies (SMD = 0.11; 95%CI = −0.69 to 0.91, P = 0.79). A total of 312 patients with recurrence and 550 patients without recurrence were included in the study. The combined results revealed that NLR levels in nasal polyp recurrence patients were significantly hi gher than those of the nasal polyp without recurrence group (SMD = 0.06, 95% CI 0.39–0.81,P ...
Source: Indian Journal of Otolaryngology and Head and Neck Surgery - Category: ENT & OMF Source Type: research