Synthesis of two OIDP studies presenting Odds Ratio's in relation to occluding pairs and location. Forest plots presenting Odss Ratio's (OR) for having any impact on OIDP of two categories of number of natural occluding pairs (NOPs) and posterior occluding pairs (POPs) and unrestored anterior spaces (UAS) in two samples (total n = 1184) [5,45]. Relative box size indicates weight of the study. (a) NOPs 0-8 vs. 9-16 (heterogeneity Χ2 = 1.17; df = 1), (b) POPs 0-3 vs. 4-8 (heterogeneity Χ2 = 0.06; df = 1), (c) UAS yes vs. no (heterogeneity Χ2 = 5.03; df = 1).
Gerritsen et al. Health and Quality of Life Outcomes 2010 8:126 doi:10.1186/1477-7525-8-126