3. Studies included and excluded from meta‐analysis of quality of life.

	Generic	Asthma specific	Diabetes specific	Other illness specific
Studies included in the meta‐analysis and outcome measure used	SF‐36: Ali 2012; Park 1996 EQ‐5D: Dhital 2015; Tommelein 2014 WhoQol: Nishita 2013	Basheti 2008; McLean 2003; Mehuys 2008; Petkova 2008; Weinberger 2002
Studies excluded from the meta‐analysis and reasons fpr exclusion	Insufficiently reported: Bond 2007; Cordina 2001; Okada 2018; Paulos 2005; Krass 2007; Skowron 2011; Schmiedel 2015; Tsuyuki 2002; Yuksel 2010	Insufficiently reported: Armour 2007; Barbanel 2003; Cordina 2001	Insufficiently reported: Adepu 2007; Kraemer 2012; Venkatesan 2012	Insufficiently reported: Petkova 2009 ‐ BPI; Jaffray 2014 ‐ MAP; Smith 2011 ‐ RQLQ

Abbreviations

BPI: Back Pain Index; EQ‐5D: Euroqol quality of life measure; MAP: Maudsley Addiction Profile; RQLQ: Rhinitis Quality of Life Questionnaire; SF‐36: Short Form‐36;