Classification accuracy is the ability of a marker or diagnostic test to discriminate between two groups of individuals, cases and controls, and is com- monly summarized by using the receiver operating characteristic (ROC) curve. In studies of classification accuracy, there are often covariates...

The receiver operating characteristic (ROC) curve displays the capacity of a marker or diagnostic test to discriminate between two groups of subjects, cases versus controls. We present a comprehensive suite of Stata commands for performing ROC analysis. Nonparametric, semiparametric, and...

Abstract While the HVTN 505 trial showed no overall efficacy of the tested vaccine to prevent HIV infection over placebo, markers measuring immune response to vaccination were strongly correlated with infection. This finding generated the hypothesis that some marker-defined vaccinated subgroups...

We examine the valuation of ADR IPOs and find that they are valued similarly to U.S. domestic IPOs but significantly higher than U.S. seasoned firms. This higher valuation is not caused by differences in firm size, growth opportunity, profitability, listing exchange, diversification benefit,...

We evaluate how work experience in mutual funds affects manager skills after they switch to private funds. Using a proprietary Chinese private fund database from 2012 to 2016, we document that, despite their work experience in mutual funds, switched private fund managers significantly...

In this paper we use a new method to rank finance journals and study the pattern of authorship/co-authorship across journals. Author Affiliation Index is a cost-effective and intuitively easy-to-understand approach to journal rankings. We define Author Affiliation Index as the ratio of articles...

This paper studies the effects of institutional distance and geographic distance on Chinese venture capital (VC) investment and subsequent exit, and further investigates how social capital, that is, network and trust, moderates such effects. We document significant dampening effects of both...