Study ID	Study author contacted	Study author replied	Additional data provided
Altman 1973	No	‐	Not applicable
Barreira 2009	01/12/2014	No	Not applicable
Buckler 1999 (+ Schaffer 1996)	30/06/2016	No	Not applicable
Canfield 1977	No	‐	Not applicable
Fraser 1997	30/6/2014	No	Not applicable
Langston 2010 (+ Ralston 1987)	30/6/2014	29/12/2014	Provided more information on co‐interventions and blinding (Langston 2010; Ralston 1987), data on pain, QoL, hearing and mean alkaline phosphatase and SD change (Langston 2010)
McClung 1995	30/6/2014	02/07/2014	Original study data no longer accessible
Merlotti 2007	30/6/2014	No	Not applicable
Miller 1999	30/6/2014	No	Not applicable
O'Doherty 1992	30/6/2014	No	Not applicable
O'Donoghue 1987	No	‐	Not applicable
Reginster 1992	30/06/2014	30/06/2014	Original study data no longer accessible
Reid 1996; Reid 2004; Reid 2005	30/6/2014	02/09/2014	Provided more information on concealment (Reid 1996; Reid 2004), mean alkaline phosphatase and SD change (Reid 2004), blinding (Reid 2005) and data on adverse events (Reid 2004)
Roux 1995	30/6/2014	08/07/2014	Original study data no longer accessible
Siris 1996	30/06/2014	01/07/2014	Original study data no longer accessible
Tan 2017	28/02/2015	22/06/2015; 10/12/2015	Unpublished data provided. Provided more information on QoL and adverse events
Walsh 2004	30/6/2014	19/08/2014	Provided more information on concealment, mean alkaline phosphatase and SD change, data on pain scores, QoL and adverse events