Table 5 Comparison of single and combined MDCT, CA199, CA242, and CEA in diagnosis of PC
Index | Sensitivity | Specificity | Accuracy | Positive predictive value | Negative predictive value |
|---|---|---|---|---|---|
MDCT | 81.18(69/85) | 87.18(34/39) | 83.06(103/124) | 92.86(69/71) | 68.18(34/50) |
CA199 | 71.76 (61/85) | 84.61(33/39) | 75.81(94/124) | 91.04(61/67) | 57.89(33/57) |
CA242 | 68.24(58/85) | 89.74(35/39) | 75.00(93/124) | 93.55(58/62) | 56.45(35/62) |
CEA | 64.71(55/85) | 87.18()34/39) | 71.77(89/124) | 91.67(55/60) | 53.13(34/64) |
Combined detection | 96.47(82/85)a,b,c,d | 82.05(32/39) | 91.94(114/124)a,b,c,d | 92.13(82/89) | 94.12(32/34)a,b,c,d |
χ2 | 35.791 | 1.118 | 19.864 | 0.415 | 17.056 |
0.981 |