Composite two-dimensional posterior distributions of star-formation rates versus stellar mass for red QSOs (red shaded contour areas) and control QSOs (blue contour lines) for the low-z sources. These are constructed by sampling 100 realization from the posterior of each source to properly account for uncertainties. Stellar masses and star-formation rates are estimated based on SED modelling. The distributions are consistent with the main sequence (grey shaded region), although as well with ULIRGS (GAMA survey; Driver et al. 2018) within the uncertainties.