738-739 / 2351
Global Incidence
Males
Females
•
ASR (cases/100 000/year) is <1 among Caucasians compared to >20 among
.
Southern Chinese males
•
Chinese immigrant populations to western countries have progressively lower NPC
risk, but their incidence remains higher than the ‘native’ populations
•
NPC incidence rate in Chinese born in the Orient 20.5, compared with 1.3 for
Chinese born in Canada, and 0.2 for white people born in Canada
•
First‐degree relatives of NPC patients have 4–10 fold excess risk