Synthesis of two OHIP studies presenting Odds Ratio's. Forest plot presenting Odss Ratio's (OR) for having OHIP impacts (fairly/very often) of two categories of number of present teeth (incomplete vs. complete  and ≤ 24 vs. ≥ 25 ) in two samples (total n = 6821). Relative box size indicates weight of the study (heterogeneity Χ2 = 0,00; df = 1).
Gerritsen et al. Health and Quality of Life Outcomes 2010 8:126 doi:10.1186/1477-7525-8-126