RT Article T1 Addressing the zeros problem: Regression models for outcomes with a large proportion of zeros, with an application to trial outcomes JF Journal of empirical legal studies VO 12 IS 1 SP 161 OP 186 A1 Eisenberg, Theodore 1947- A2 Zhang, Min A2 Wells, Martin T. A2 Eisenberg, Thomas LA English YR 2015 UL https://krimdok.uni-tuebingen.de/Record/1912449358 DO 10.1111/jels.12068