“…Five studies incorporated the Hearing Handicap Inventory for the Elderly (HHIE) or its screening version (HHIE-S), together with a self-developed questionnaire (Fischer et al, 2011) or face-to-face interviews (Chang et al, 2009;Lopez-Torres Hidalgo et al, 2009;Hartley et al, 2010;Mizutari et al, 2013). Among the nine studies that used only a single instrument, six employed selfdeveloped questionnaires (Nabelek et al, 2006;Meister et al, 2008;Bertoli et al, 2009Bertoli et al, , 2010Staehelin et al, 2011;Ham et al, 2014), and three utilized face-to-face interviews (Smeeth et al, 2002;Lupsakko et al, 2005;Palmer et al, 2009). …”