小弟在一篇文章中看到一个用列联分析做得结果，如下：

其实，里面的SENS就是列联分析里的如下位置的百分比：

小弟想知道第一个图中的百分比后面括号中的那个95%置信区间的数字是如何算出来的。
文章中说：“The X2 statistic was used to indicate significant findings. CIs for accuracy measures were calculated
according to the Wilson method. Furthermore, cut points for an optimized sensitivity or specificity 0.95 were calculated, respectively.”

“A 12-hour S100B value 0.35 g/L
predicted a subsequent malignant course of infarction with a
sensitivity of 0.75 (95% CI, 0.51 to 0.90) and a specificity of
0.80 (95% CI, 0.64 to 0.90).”

急啊，多谢大牛啦