1. Meta-analysis of five prospective studies examining the associations between urinary melatonin secretion and breast cancer risk.
Meta-analysis of five prospective studies examining the associations between urinary melatonin secretion and breast cancer risk. Dashed vertical line, the combined estimate; diamond-shaped box, the CI from the random-effects model. The estimates are plotted with boxes; the area of each box is inversely proportional to the estimated effect's variance in the study, hence giving more visual prominence to studies in which the effect is more precisely estimated.
Eva S. Schernhammer et al. Cancer Epidemiol Biomarkers Prev 2010;19:
©2010 by American Association for Cancer Research