New Evidence on Information Disclosure through Restaurant Hygiene Grading: Reply
回应了Ho等人对Jin和Leslie（2003）研究设计的质疑，通过稳健性检验支持了原结论：洛杉矶县1998年实施餐厅卫生评级卡后，食源性疾病住院率相对于加州其他地区有所下降，但下降主要集中在中部和北部，南部加州可能因溢出效应而不显著。
Ho, Ashwood, and Handan-Nader (forthcoming) replicates table VI of Jin and Leslie (2003) but questions its research design. Robustness checks support our original conclusion—foodborne hospitalizations, as defined in JL, declined in Los Angeles County (LA) relative to the rest of California (CA) after LA adopted restaurant hygiene grade cards in 1998. More precisely, the decline in LA is pronounced against central and Northern CA, but insignificant when compared with the rest of Southern CA. One possible explanation is that the LA regulation has generated spillovers in Southern CA.