| Study | Reason for exclusion |
|---|---|
| Aboumater 2012 | ITS design with insufficient data collection points |
| Adams 2013 | ITS design with unclear intervention period |
| Al Tawfiq 2013 | ITS design with inadeqate data collection points |
| Armellino 2013 | ITS design with inadeqate data collection points |
| Assanasen 2008 | ITS design with inadequate data collection points |
| Barnett 2013 | ITS design with inadeqate data collection points |
| Barrera 2011 | ITS design with inadequate data collection points |
| Barrow 2009 | ITS design with insufficient data collection points |
| Bellis 2006 | ITS design with inadequate data collection points |
| Bittner 2002 | CBA study design with 1 nonequivalent control group. |
| Chan 2013 | ITS design with inadeqate data collection points |
| Chen 2011 | ITS design with inadequate data collection points |
| Christiaens 2009 | ITS design with inadeqate data collection points |
| Colombo 2002 | CBA study design with 1 nonequivalent control group. |
| Conly 1989 | IITS design with inadeqate data collection points |
| Conrad 2010 | ITS design with unclear intervention period |
| Creel 2014 | ITS design with inadeqate data collection points |
| Crews 2013 | ITS design with inadeqate data collection points |
| Donnellan 2011 | ITS design with inadequate data collection points |
| Donowitz 1986 | ITS design with inadeqate data collection points |
| Dos Santos 2011 | ITS design with inadeqate data collection points and unclear intervention period |
| Duerink 2006 | CBA study inadequate control, no baseline |
| Eldridge 2006 | ITS design with inadeqate data collection points |
| Fisher 2013b | ITS design with inadeqate data collection points |
| Giannitsioti 2009 | Non‐randomised trial with inadequate control group |
| Golan 2006 | Cross‐over CBA design with only 1 intervention group and 1 control group |
| Gould 1997 | CBA design with only 1 intervention group and 1 control group |
| Grayson 2008 | ITS design with inadeqate data collection points |
| Grayson 2011 | ITS design with inadeqate data collection points |
| Harne‐Bittner 2011 | CBA design with 2 intervention groups but only 1 control group |
| Huang 2006 | ITS design with inadeqate data collection points |
| Huang 2008 | IITS design with inadeqate data collection points |
| Kohli 2009 | Non‐randomised clinical trial with inadequate control group |
| Larson 1991 | CBA study design with 1 nonequivalent control group |
| Larson 1997 | CBA study design with 1 nonequivalent control group |
| Larson 2000 | CBA study design with 1 nonequivalent control group |
| Linam 2011 | CBA design with only 1 intervention group and 1 control group |
| Lobo 2010 | ITS design with inadeqate data collection points |
| Madani 2006 | ITS design with inadequate data collection points |
| Marra 2008 | Non‐randomised trial, no baseline data, inadequate control group |
| Marra 2010 | CBA design with only 1 intervention group and 1 control group |
| Marra 2011 | CBA design with only 1 intervention group and 1 control group |
| Marra 2013a | CBA design with only 1 intervention group and 1 control group |
| Marra 2013b | ITS design with inadeqate data collection points |
| Marra 2014 | CBA design with only 1 intervention group and 1 control group |
| Mayer 1986 | CBA study design with 1 nonequivalent control group |
| McLaws 2009 | ITS design with inadequate data collection points |
| Miyachi 2007 | ITS design with inadequate data collection points |
| Molina‐Cabrillana 2010 | ITS design with inadequate data collection points |
| Peterson 2012 | ITS design with unclear intervention period |
| Picheansathian 2008 | ITS design with inadequate data collection points |
| Raju 1991 | ITS design with inadeqate data collection points |
| Rees 2013 | ITS design with inadeqate data collection points and unclear intervention period |
| Rupp 2008 | Cross‐over CBA design with only 1 intervention group and 1 control group |
| Sakamoto 2010 | ITS design with no clear intervention period |
| Schweon 2012 | ITS design with inadequate data collection points |
| Song 2013 | ITS design with inadeqate data collection points |
| Sopirala 2014 | ITS design with inadeqate data collection points |
| Stella 2013 | ITS design with inadeqate data collection points |
| Stoesser 2013 | ITS design with inadeqate data collection points |
| Stone 2007 | ITS design with inadeqate data collection points |
| Stone 2011 | ITS design with inadeqate data collection points |
| Trick 2007 | CBA study with only 1 control group |
| Van de Mortel 2006 | ITS design with inadequate data collection points |
| Vinci 2012 | ITS design with inadequate data collection points |
| Walker 2013 | CBA design with only 1 intervention group and 1 control group |
| Walker 2014 | CBA design with only 1 intervention group and 1 control group |
CBA: controlled before‐after ITS: interrupted time series RCT: randomised (controlled) trial