**Table 3:** An overview of the datasets used to derive the properties of the binary population in Sco OB2. Columns 1-3 list the dataset acronym, the reference, and the type of binary studied in the dataset. Columns 4 and 5 list the number of targets in the original dataset, and the number of companions found for these targets. Columns 6 and 7 list the number of targets and companions used in our analysis. This dataset is smaller than the original dataset, as we do not include the non-members of Sco OB2 in our analysis and at most one companion per targeted star in the case of a multiple systems. The datasets partially overlap, which is taken into account when these are combined in the following sections. We list in this table the total number of spectroscopic binaries, including the radial velocity variables (RVVs; irrespective of their true nature), SB1s, and SB2s. For the *Hipparcos* observations we list the number of entries in the categories (X), (O), (G), (C), and (S), among the confirmed members of Sco OB2.
Abbreviation	Reference	Dataset	$N_{\rm orig}$	$B_{\rm orig}$	$N_{\rm used}$	$B_{\rm used}$

KO5	Kouwenhoven et al. (2005)	Visual	199	74	199	60
KO6	Kouwenhoven et al. (2007)	Visual	22	29	22	18
SHT	Shatsky & Tokovinin (2002)	Visual	115	25	87	23
LEV	Levato et al. (1987)	Spectroscopic	81	61	53	39
BRV	Brown & Verschueren (1997)	Spectroscopic	156	91	71	47
HIP	Perryman et al. (1997)	Astrometric/Visual	521	125	521	125

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