TY JOUR TI Strength of Association. Report 1. Graduations of Relative Risk KW graduation of effect size KW ordinal scales KW relative risk KW epidemiology JO Medical Radiology and radiation safety AU Koterov, A.N. AU Ushenkova, L.N. AU Zubenkova, E.S. AU Vaynson, A.A. AU Kalinina, M.V. AU Biryukov, A.P. PY 2019 IS 64 PB Federal Medical Biological Agency of Russia