Association between oral contraceptive use and pancreatic cancer risk: A systematic review and meta-analysis

Figure 1 Flow-diagram of literature search.

Figure 2 Forest plot of the association between the use of oral contraceptives and risk of pancreatic cancer. CI: Confidence interval.

Figure 3 Funnel plot of studies investigating the use of oral contraceptives and risk of pancreatic cancer. RR: Relative risk.

Figure 4 Forest plot of the association between pancreatic cancer risk and duration of oral contraceptives use. A: Less than 1 year; B: Less than 5 years; C: 5-10 years; D: Longer than 10 years. CI: Confidence interval.