Coffee drinking and pancreatic cancer risk: A meta-analysis of cohort studies

Figure 1 Flow diagram of search strategy and study selection.

Figure 2 Summary relative risks of pancreatic cancer for coffee drinkers vs non/lowest drinkers from included studies (A), low to moderate coffee drinkers vs non/lowest drinkers from included studies (B) and high coffee drinkers vs non/lowest drinkers from included studies (C). Weights are from random effect analysis. Squares represent study-specific relative risk estimates (size of the square reflects the study-specific statistical weight, that is, the inverse of the variance); horizontal lines represent 95% CIs; diamonds represent summary relative risk estimates with corresponding 95% CIs.

Figure 3 Publication bias in the studies. Begg’s funnel plot indicating no publication bias in the studies included in this meta-analysis. No indication of publication bias was noted from both visualization of funnel plot and Egger’s test. RR: Relative risk.