{smcl} {title:Title} {p 4 4 2}{bf:tc_covaug} {hline 2} Covariates-augmented threshold test (Oh, Lee & Meng 2017) {title:Syntax} {p 4 8 2} {cmd:tc_covaug} {it:depvar} {it:indepvars} {ifin} [{cmd:,} {opt model(tar|mtar)} {opt threshold(#)} {opt maxlag(#)} {opt criterion(aic|bic)}] {title:Description} {pstd} Augments the Enders-Siklos testing equation with the first differences of the I(1) regressors as stationary covariates, yielding higher power. Bundles 5%-CV table for m = 1, 2, 3 regressors. {title:Also see} {p 4 4 2}{helpb threshcoint:Package overview} | {helpb tc_es} | {helpb tc_glsmtar} | {helpb tc_exes}{p_end}