Table 3

The P values (Mann-Whitney test) of EBV DNA quantity in brushing samples/plasma samples of control subjects as compared with different T stages (T1/T2, T3, T4), N stages (N0/N1, N2, N3), and overall stages (stage I, II/III, IV) of NPC cases.

T1T2/T3/T4N0N1/N2/N3Stage I/IIStage III/IV
P for control brush EBV DNA (copies/actin)0.00010.00010.00010.00010.00010.0001
P for control plasma EBV DNA (copies/ml)0.00010.00010.00010.00010.00010.0001