Fig. 3From: Occupational exposure to silica dust and risk of lung cancer: an updated meta-analysis of epidemiological studiesForest plot showing pooled standardized incidence ratio (SIR) of lung cancer due to silica dust. SIR, Standardized incidence ratio; RE, Random effect; I2, Variability due to heterogeneity; Q, Chi-square test for heterogeneity; K, Number of studiesBack to article page