An estimate of the risk or prevalence ratio, adjusted for confounders, can be obtained from a log binomial model (binomial errors, log link) fitted to binary outcome data. We propose a modification of the log binomial model to obtain relative risk estimates for nominal outcomes with more than two attributes (the log multinomial model).
The batteries are not dealership's and the warranty is not theirs. Both belong to the manufacturer of the battery who makes them and Toyota just uses them and the battery manufacturer does not offer free alignments, just battery replacements. Last edited: Aug 28, 2014.
If for some reason you do need to replace the hybrid battery out of warranty, do note that your Toyota dealer should offer you a $200 rebate/bounty on it, so that it gets properly recycled. Used Prius hybrid battery packs (such as from wrecked vehicles) have been selling for less than US$1000 on eBay.