d STB-13 May 1993 t .. Other STBs p dm12_1 Selecting claims from medical claims data bases p dm13 Name extraction and string utilities p ip4 Program debugging command p os8 Stata and Lotus(tm) 123 p os9 Printing Stata log files p sg5_1 Correlation coefficients with significance levels p sg17 Regression standard errors in clustered samples p sqv8 Interpreting multinomial logistic regression p sts3 Cross correlations