Relative risks or odds ratios?

I was surprised that in an article concerning risks of waiting for cardiac catheterization, written by specialists in clinical epidemiology,1 the same results are reported as relative risks (in the abstract and the Results section of the paper) and as odds ratios (in Table 5). Given that these data were generated by multivariate analysis, I suppose that the values are odds ratios, as stated in Table 5. However, with regard to the results of the univariate analysis, which are presented only in Table 5, I'm uncertain what the numbers represent. They might be odds ratios, as stated; however, because the report describes a cohort study, relative risks should have been given.2

Cristian Baicus Specialist in Internal Medicine Clinical Epidemiology Unit Colentina University Hospital Bucharest, Romania