scholarly journals Receiver operating characteristic curves for comparison of serial neutrophil band forms and C reactive protein in neonates at risk of infection.

1992 ◽  
Vol 67 (7 Spec No) ◽  
pp. 808-812 ◽  
Author(s):  
G A Russell ◽  
A Smyth ◽  
R W Cooke
2021 ◽  
pp. 096228022199595
Author(s):  
Yalda Zarnegarnia ◽  
Shari Messinger

Receiver operating characteristic curves are widely used in medical research to illustrate biomarker performance in binary classification, particularly with respect to disease or health status. Study designs that include related subjects, such as siblings, usually have common environmental or genetic factors giving rise to correlated biomarker data. The design could be used to improve detection of biomarkers informative of increased risk, allowing initiation of treatment to stop or slow disease progression. Available methods for receiver operating characteristic construction do not take advantage of correlation inherent in this design to improve biomarker performance. This paper will briefly review some developed methods for receiver operating characteristic curve estimation in settings with correlated data from case–control designs and will discuss the limitations of current methods for analyzing correlated familial paired data. An alternative approach using conditional receiver operating characteristic curves will be demonstrated. The proposed approach will use information about correlation among biomarker values, producing conditional receiver operating characteristic curves that evaluate the ability of a biomarker to discriminate between affected and unaffected subjects in a familial paired design.


2021 ◽  
Author(s):  
Bailin Chenilin Chen ◽  
Jian Cao ◽  
Chengwei Yan ◽  
Chao Zheng ◽  
Jingyu Chen ◽  
...  

Abstract Background: The most critical concern for management of childhood intussusception is the bowel resection due to the intestinal ischemia and necrocis. It is of great importance for early prediction of this problem. We investigate the value of various combinations of inflammatory factors to predict the intestinal necrocis and resection.Methods: We retrospectively reviewed the medical records of pediatric patients with intussusception, which undergone surgical management. During the research period, 47 patients undergone intestinal resection due to intestinal necrocis and 68 patients without intestinal resection were enrolled. We evaluated the diagnostic values of various combination of inflammatory markers from preoperative period laboratory analyses using the receiver operating characteristic (ROC) method.Results: In the current cohort, 115 patients were operated for intussusception, among them, 47 patients (40.9%) undergone intestinal resections. In patients with intestinal resections, neutrophil count(p=0.013), CRP(p=0.002), platelet–lymphocyte ratio(PLR, p=0.008), NLR(neutrophil–lymphocyte ratio, p=0.026), and LCR(lymphocyte–CRP ratio, p<0.001) values were significantly higher than those in the patients without any resections. Receiver operating characteristic (ROC) analysis results showed that the combination of lymphocytic count along with C-reactive protein levels (LCR) demonstrated the highest correlation with intestinal resection due to intussusception compared with other parameters in patients, with sensitivity of 0.82(0.73–0.86) and specifficity of 0.80(0.57–0.94) for the diagnosis of strangulation. Conclusion: The preoperative LCR level is a useful marker to predict the need for intestinal resection due to intestinal necrosis in patients with intussusception.


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