Diagnostic Value of Systemic Immune-Inflammation Index in Subacute Thyroiditis
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摘要:
目的 评估系统免疫炎症指数(SII)在亚急性甲状腺炎(SAT)患者中的诊断价值。 方法 回顾性分析2020年1月—2022年9月浙江省人民医院门诊及住院的127例SAT患者(SAT组)和100例健康体检者(健康对照组)的人口统计学和实验室数据。比较2组SII、中性粒细胞计数与淋巴细胞计数比值(NLR)、血小板计数与淋巴细胞计数比值(PLR)、CRP、ESR和TSH,并分析SAT患者SII与其他指标的相关性。采用逐步logistic回归分析筛选独立预测因素,使用ROC曲线评估SII对SAT的诊断效能。 结果 与健康对照组比较,SAT组SII、NLR、PLR、CRP、ESR均显著升高,TSH明显降低(P<0.001)。相关性分析显示,SAT患者SII与NLR(r=0.867,P<0.001)、PLR(r=0.788,P<0.001)、CRP(r=0.415,P<0.001)和ESR(r=0.414,P<0.001)呈正相关关系,与TSH(r=-0.384,P<0.001)呈负相关关系。多因素回归分析显示,SII(OR=1.004,P<0.001)、CRP(OR=1.228,P<0.001)、ESR(OR=1.085,P<0.001)和FT4(OR=1.748,P<0.001)均为SAT的独立影响因素。当SII截断点为555.8时,预测SAT的AUC为0.91(95% CI:0.87~0.95),灵敏度为90.0%,特异度为83.4%。 结论 SII可作为SAT潜在的标志物,可用于SAT疾病的诊断。 Abstract:Objective To evaluate the diagnostic value of the systemic immune-inflammation index (SII) in cases of subacute thyroiditis (SAT). Methods A retrospective analysis was conducted on the demographic and laboratory data of 127 patients with SAT and 100 healthy controls who were seen in both outpatient and inpatient departments of Zhejiang Provincial People' s Hospital from January 2020 to September 2022. SII, neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), CRP, ESR and TSH were compared between patients with SAT and healthy controls, and the correlation between SII and NLR, PLR, CRP, ESR and TSH was analyzed. Stepwise logistic regression analysis was used to screen for independent predictors, and the area under the ROC curve was used to evaluate the diagnostic value of SII in SAT. Results In comparison with the healthy control group, the SAT patient group demonstrated significantly elevated SII, NLR, PLR, CRP and ESR, while TSH was significantly reduced (P < 0.001). A significant positive correlation between SII and NLR (r=0.867, P < 0.001), PLR (r=0.788, P < 0.001), CRP (r=0.415, P < 0.001) and ESR (r=0.414, P < 0.001), while SII demonstrated a significant negative correlation with TSH (r=-0.384, P < 0.001). Multivariate regression analysis demonstrates that SII (OR=1.004, P < 0.001), CRP (OR=1.228, P < 0.001), ESR (OR=1.085, P < 0.001) and FT4 (OR=1.748, P < 0.001) were independently influential factors for SAT. When the SII cut-off point was set at 555.8, the AUC was 0.91 (95% CI: 0.87-0.95), with sensitivity set at 90.0% and specificity at 83.4%. Conclusion SII has potential application as a practical marker for the diagnosis of SAT disease. -
表 1 SAT组与对照组一般资料及实验室相关参数比较
Table 1. Comparison of general information and laboratory parameters between the SAT and healthy control groups
组别 例数 性别(男性/ 女性, 例) 年龄[M(P25, P75), 岁] 白细胞计数[M(P25, P75), 109/L] 中性粒细胞计数[M(P25, P75), 109/L] 淋巴细胞计数[M(P25, P75), 109/L] 血小板计数(x±s, 109/L) NLR [M(P25, P75)] PLR [M(P25, P75)] SAT组 127 32/95 48(40, 55) 7.45(6.40, 9.40) 5.17(4.39, 6.90) 1.71(1.38, 2.06) 310±84 3.15(2.50, 4.21) 174.60(137.50, 229.00) 对照组 100 25/75 43(36, 54) 5.69(4.85, 6.49) 3.08(2.55, 3.85) 1.94(1.61, 2.34) 228±45 1.59(1.25, 1.97) 115.10(97.50, 140.40) 统计量 0.001a 1.729b 8.243b 10.190b 3.463b 8.732c 10.208b 8.317b P值 0.973 0.084 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 组别 例数 SII [M(P25, P75)] TSH [M(P25, P75), mIU/L] FT3 [M(P25, P75), ng/L] FT4 [M(P25, P75), ng/L] CRP [M(P25, P75), mg/L] ESR [M(P25, P75), mm/h] SAT组 127 949.70(665.10, 1 399.0) 0.02(0.01, 0.23) 4.59(3.60, 6.01) 18.49(10.89, 30.14) 36.00(11.10, 69.20) 57.00(30.00, 86.00) 对照组 100 347.90(279.10, 458.00) 1.87(1.34, 2.83) 3.24(3.03, 3.62) 8.86(8.04, 9.85) 0.50(0.20, 2.10) 11.50(6.00, 20.75) 统计量 10.700b 10.311b 8.261b 8.899b 11.793b 10.450b P值 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 注:a为χ2值,b为Z值,c为t值。 表 2 复发组与无复发组SAT患者实验室相关参数比较[M(P25, P75)]
Table 2. Comparison of laboratory parameters between the recurrent and non-recurrent groups in patients with SAT[M(P25, P75)]
组别 例数 SII 白细胞计数(109/L) NLR PLR CRP(mg/L) SAT复发组 32 1 080.25(616.24, 1 395.51) 7.43(6.33, 9.12) 3.55(2.78, 4.40) 183.84(138.18, 235.34) 43.90(12.05, 75.00) SAT无复发组 95 924.00(665.10, 1 399.00) 7.45(6.42, 9.45) 3.07(2.37, 4.17) 167.46(136.64, 224.85) 32.00(10.55, 67.75) Z值 0.605 0.175 1.052 0.639 0.702 P值 0.545 0.861 0.293 0.523 0.482 组别 例数 ESR(mm/h) TSH(mIU/L) FT3(ng/L) FT4(ng/L) SAT复发组 32 93.50(55.00, 107.50) 0.01(0.01, 0.01) 6.01(4.05, 7.39) 27.90(23.88, 46.96) SAT无复发组 95 57.69(30.00, 80.00) 0.02(0.01, 0.15) 4.70(3.61, 6.34) 18.31(11.11, 29.97) Z值 3.244 2.840 2.335 3.912 P值 0.001 0.005 0.020 <0.001 表 3 SAT影响因素的逐步logistic回归分析
Table 3. Logistic regression analysis of factors influencing SAT
变量 B SE Waldχ2 P值 OR值 95% CI SII 0.004 0.001 16.002 <0.001 1.004 1.002~1.005 CRP 0.206 0.047 19.050 <0.001 1.228 1.120~1.347 ESR 0.081 0.015 29.560 <0.001 1.085 1.053~1.117 FT4 0.558 0.116 23.086 <0.001 1.748 1.392~2.195 注:本表仅列出差异有统计学意义的结果。 表 4 不同指标对SAT的诊断性能分析
Table 4. Analysis of diagnostic performance of SAT by different indexes
项目 临界值 灵敏度(%) 特异度(%) AUC(95% CI) P值 SII 555.8 90.0 83.4 0.91(0.87~0.95) <0.001 CRP(mg/L) 6.3 83.5 96.0 0.95(0.93~0.97) <0.001 ESR(mm/h) 28.5 78.0 96.0 0.90(0.86~0.94) <0.001 SII+CRP+ESR 0.53 92.9 99.0 0.98(0.95~0.99) <0.001 -
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