Table 5.

The summary of previous studies that looked at QOL in acne.

Author	Questionnaire	Year	Country	Reference
Tan et al.	SF36	2008	Japan	[5]
Abdel-Hafez et al.	DLQI	2009	Egypt	[7]
Al Robaee	SF36	2009	Saudi Arabia	[12]
Kaymak et al.	DLQI	2009	Palestine	[16]
Kobayashi et al.	DLQI & kindex-29-J	2009	Japan	[18]
Arslan et al.	SF36	2009	Turkey	[20]
Do et al.	The Self Image & Rosenberg Self-Esteem	2009	Korea	[21]
Mallon et al.	Rosenberg Self-Esteem  &  General Health  &  DLQI  &  SF36	1999	UK	[22]
Takahashi et al.	DLQI	2006	Japan	[23]
Lasek and Chren	DLQI	1998	USA	[24]
Jones-Caballero et al.	Skindex-29	2007	Spain	[25]
Matsuoka et al.	WHOQOL26 & DLQI	2006	Japan	[26]
Fried and Nighland	Acne Quality of Life Index	2009	USA	[27]
Dréno	Reviews the different scales	2006	France	[28]
Jones-Caballero et al.	Skindex-29	2008	Spain	[29]
Lott et al.	Review	2010	USA	[30]