Figure 3. In studies on IL-6, risk estimates of lung cancer associated with one unit change in ln IL-6.

Squares indicate study-specific risk estimates (size of the square reflects the study-specific statistical weight, i.e., the inverse of the variance); horizontal lines indicate 95% confidence intervals (CIs); diamonds indicate summary risk estimate with its corresponding 95% confidence interval. Abbreviation: BWHHS, British Women’s Heart and Health Study; CCS, Caerphilly Cohort Study; NCI-MD, National Cancer Institute-Maryland; PLCO, prospective Prostate, Lung, Colorectal, and Ovarian.