Fig. 2From: Secular trend analysis of lung cancer incidence in Sihui city, China between 1987 and 2011The trends in world age-standardized rates (ASR-W) of lung cancer incidence for both sexes in the period of 1987–2010 in Sihui with joinpoint regression by sex. ^Denotes parameters significantly different from zero at α = 0.05.Back to article page