Median effective radii (and MAD) derived for the different tracers and subsamples. The stellar, ionized, and CO(2–1) R_eff are shown in magenta, green, and blue, respectively. Left: median values for the whole sample are shown (i.e., ‘ALL LIRGs’), along with the median values derived for the LIRG subsample with (w AGN) and without (w/o AGN) an AGN. Right: median R_eff for the four subsamples defined in Table 1 (0(R) 0(P), 1, 2) are shown.