Spatial and Temporal Patterns of Nasopharyngeal Carcinoma Mortality in China, 1973–2005

We fitted generalized linear models using data from three national retrospective surveys on cause of death in China to explore the spatial and temporal patterns of nasopharyngeal carcinoma (NPC) mortality over the period 1973 to 2005. The results suggest that there was a significant decrease in NPC mortality in China over time (p<0.0001), the mortality rate ratio (RR) for the two later time periods were 0.59 (95% CI: 0.55–0.64) for 1990–1992 and 0.42 (95% CI: 0.39–0.45) for 2004–2005 compared to that of 1973–1975.

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