Psaty BM, Koepsell TD, Manolio TA, Longstreth WT Jr, Wagner EH, Wahl PW, Kronmal RA. Risk ratios and risk differences in estimating the effect of risk factors for cardiovascular disease in the elderly. J Clin Epidemiol. 1990;43(9):961-70. Review.
Psaty BM, Koepsell TD, Manolio TA, Longstreth WT Jr, Wagner EH, Wahl PW, Kronmal RA. Risk ratios and risk differences in estimating the effect of risk factors for cardiovascular disease in the elderly. J Clin Epidemiol. 1990;43(9):961-70. Review.