Figure 2
From: Analysis of primary risk factors for oral cancer from select US states with increasing rates
Analysis of smoking trends in specific US states. A) Analysis of the annual percent change (APC) or change in smoking trends (1995-2000) from states with elevated oral cancer rates demonstrated these states experienced positive, increasing rates of smoking prevalence, while states sharing a contiguous border with Nevada experienced simultaneous negative or declining rates of smoking, with the exception of Idaho. B) Graphing the smoking prevalence in Nevada revealed a year-by-year increasing trend which peaked in 1999 and subsequently began a steady, sustained decline over successive years.