Table 3.

The mean ± 2 standard error of ELISA OD readings of EBV serum IgG and IgA antibodies in different subgroups of NPC and CL patients

Group	Mean ELISA OD EBV serum IgG	Mean ELISA OD EBV serum IgA
NPC patients with LE	0.397 ± 0.036	0.527 ± 0.076
NPC patients with SCC	0.239 ± 0.067	0.268 ± 0.09
CL patients with LE	0.135 ± 0.01	0.11 ± 0.032
CL patients with SCC	0.131 ± 0.008	0.093 ± 0.044
Below-median age group of NPC	0.314 ± 0.039	0.486 ± 0.073
Above-median age group of NPC	0.327 ± 0.047	0.3 ± 0.082
Regular smokers in NPC	0.379 ± 0.043	0.493 ± 0.084
Non- regular smokers in NPC	0.19 ± 0.057	0.213 ± 0.056
Regular alcohol consumers in NPC	0.325 ± 0.05	0.466 ± 0.072
Non-regular alcohol consumers in NPC	0.372 ± 0.041	0.445 ± 0.086
HNCA-positive family history group of NPC	0.2 ± 0.065	0.177 ± 0.1
HNCA-negative family history group of NPC	0.377 ± 0.041	0.499 ± 0.076