Number of sources associated with outflows and jets as traced by CO (2− 1) (black, left), SO (5₆−4₅) (red, middle-left), and SiO (5−4) (blue, middle-right) as a function of the internal luminosity, L_int, of the 21 Class 0 protostars in the CALYPSO sample. The detection rate for each L_int bin (in logarithmic scale) is reported above the histogram, while the detection rate for the whole sample is labeled on top of each panel. The detection rate of jets and outflows for L > L_int is shown in the right panel, with the same colour coding. The grey histogram shows the fraction of sources for L > L_int.