Figure 3
From: Analysis of primary risk factors for oral cancer from select US states with increasing rates
Analysis of annual smoking prevalence data in states with elevated oral cancer APC. A) A plot of annual data regarding state smoking prevalence demonstrates some initial variability among varying states, following by a more general declining trend beginning between 1999 and 2001. B) Graphing the trend or five-year annual percent change (APC) from these states revealed the more general trend of variability during the initial time periods (1995-2000 through 1998-2003), that was followed by more general declining trends in subsequent periods (1999-2004 through 2002-2007).