are discovered via image subtraction, so the discrimination against SNe occurring near the bright nuclei of galaxies is less strong. Nevertheless, an area with a radius of a few pixels centred on every galaxy nucleus is usually excluded during a search, because galactic nuclei often suffer imperfect image subtraction and introduce many false sources [e.g. @2011MNRAS.412.1419L]. Another difficulty is that extinction by dust in host galaxy discs, depending on inclination, can affect the radial distributions of SNe, particularly in the nuclear region [e.g. @1997ApJ...483L..29W; @1998ApJ...502..177H; @2015MNRAS.446.3768H].

To check the possible influences of these selection effects on the radial distribution of SNe, we compare, in Table \[SNeIaCC\_KS\_AD\], the radial distributions of SNe in different pairs of subsamples where these selection effects may produce different radial SN distributions. For this, we performed two-sample KS and AD tests between the pairs of radial SN distributions. These tests show that the radial distributions of Type Ia and CC SNe in our sample are not affected by distance or inclination of the host galaxy, nor by the SN discovery epoch (photographic/CCD searches).

We now compare, in Table \[diffSNe\_KS\_AD\], the distributions of the normalized deprojected radii for pairs of subsamples that should not be affected by 