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. Author manuscript; available in PMC: 2013 Feb 1.
Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2011 Dec 5;21(2):294–304. doi: 10.1158/1055-9965.EPI-11-0590

Figure 1. Forest plot of study-specific ORs and 95% CIs for the association between history of diabetes and HNC risk, INHANCE Pooled Case-Control Study of Head and Neck Cancer.

Figure 1

The squares represent the OR estimates and the horizontal lines represent the 95% CIs for each study. The area of the square reflects the weight that the study contributes. This random-effects model incorporates an estimate of between-study heterogeneity in the weighting. The diamond at the center indicates the random-effects estimate and the width of the diamond indicates the 95% CI.