Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Timing comparison of the proposed method versus Jin et al. (2003). The timing of the proposed accounted for both the point estimation and the sandwich variance estimation, whereas that of Jin et al. (2003) was for the point estimation alone. The number of covariates, 2, 4, 8, or 16, is marked on each line.
