Association of Ambient Air Pollution with Nasopharyngeal Carcinoma Incidence in Ten Large Chinese Cities, 2006-2013.

In the condition that all factors including air pollution level are kept constant at their average, the average NPC incidence is 32 (≈(e 3.6453 + e 3.2523 )/2) per 100,000 population nationwide, and the average annual NPC incidence growth rate is approximately 42% (≈(1.0688 − 0.2203)/2) nationwide, indicating an increasing trend in NPC incidence over time. 3.3.

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Similarly, the health effects of SO 2 in the current period are positively associated with both NPC incidence and its growth rate, but not quite statistically significant like NO 2 .

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