Carbohydrate antigen 19-9 for differential diagnosis of pancreatic carcinoma and chronic pancreatitis

Figure 2 Forest plot showing sensitivity and specificity of carbohydrate antigen 19-9 in the diagnosis of pancreatic carcinoma. The point estimates of sensitivity and specificity from each study are shown as solid circles. Horizontal error bars indicate 95%CI. Numbers between the plots refer to references. Pooled estimates for the serum carbohydrate antigen 19-9 assay were 0.81 for sensitivity (95%CI: 0.80-0.83) and 0.81 for specificity (95%CI: 0.79-0.82).