Table 6.

Validity of first-stage screening, second-stage screening, and the whole two-stage screening based on National Cancer Registration Database

First-stage screening liver cancer
Second-stage screening liver cancer
Two-stage screening liver cancer
(+)(-)Total(+)(-)Total(+)(-)Total
Screening (+)1023,1403,24277601377760137
Screening (-)1753,44353,460253,0803,1054256,52356,565
Total11956,58356,7021023,1403,24211956,58356,702
Sensitivity102/119 = 85.7%77/102 = 75.5%77/119 = 64.7%
Specificity53,443/56,583 = 94.5%3,080/3,140 = 98.1%56,523/56,583 = 99.9%
Accuracy53,545/56,702 = 94.4%3,157/3,242 = 97.4%56,600/56,702 = 99.8%
PPV102/3,242 = 3.15%77/137 = 56.2%77/137 = 56.2%
NPV53,443/53,460 = 99.97%3,080/3,105 = 99.2%56,523/56,565 = 99.9%