Table 1: Study populations included in this meta-analysis of sun sensitivity, sunburns and melanoma among populations of Spanish descent.

Author, Publication Year	Age Range	Place	Diagnosis Dates^a	Case/ Control	Cases^b	Controls	Report Quality scores^c
Rodenas, 1996	Cases: 20-79 Controls: 21-78	Spain, Andalusia	1989-1993	105/138	All incident in-situ or invasive melanomas from the dermatology department at the University of Granada Hospital	Randomly selected visitors to patients other than dermatology ward without any other acute disease	12
Espinosa Arrenz, 1999	Cases: 21-87 Controls: 21-84	Spain, Madrid	(1/1990-1/1994)	116/235	Consecutive melanomas from dermatology and plastic surgery for oncology department at the La Paz, Hospital	Randomly selected emergency patients unrelated to cancer or skin; age & sex matched	7
Loria, 2001	Not stated	Argentina, Buenos Aires City	5/1993-3/1995 (6/1993-4/1995)	101/246	All in-situ and invasive melanomas from 4 hospitals in Buenos Aires City	Randomly selected hospital controls, age, sex, and hospital matched (non-dermatology illnesses)	7
Ruiz Lascano, 2004	Cases: 14-87	Argentina, Cordoba	(12/1998-12/2001)	65/195	Consecutive melanomas from the dermatology service of the Hospital Privado de Cordoba	Randomly selected medical clinic patients (non-dermatology), age and sex matched	5
Fernandez, 2007 [2009]	Not stated	Spain, Madrid	(09/1/2004-09/30/2005 [10/3/2007])	116/188 [205/245]	Consecutive melanomas from the dermatology department of Gregorio Maranon general University Hospital	Cancer free subjects from Madrid College of Lawyers, age and sex matched	6
Nagore, 2009	Cases: 60-96 Controls: 60+	Spain, Valencia	1/1/1998-12/31/2006	160/318	Consecutive in-situ and invasive melanomas from dermatology dept. of Instituto Valencianco de Oncolgia (IVO)	Age 60+ randomly selected among those evaluated between 2002-2004 in Program Of Health Promotion; age and sex matched	8
Ballester, 2012	Cases:43-69 Controls: 42-64	Spain, Valencia	Treatment 1/2007-6/2008	242/173	All incident melanomas treated in dermatology departments in 5 hospitals in Valenica	Individuals accompanying non-melanoma patients to dermatology departments from the same geographic area excluding relatives	6

^aStudies that reported data collection dates rather than diagnosis dates are in parenthesis.

^bUnclear if in-situ and/or invasive cases unless otherwise specified. All studies reported histologically confirmed melanomas.

^cReport Quality assessment was based on four 5-point scales for: completeness of 1) types of cases and controls selected; 2) cases description and 3) control description describing how recruited, reasons for eligibility and numbers at stages of recruitment; and 4) for adequate description of how potential confounders were identified and how they were chosen with a low score for not stating anything or moderately low for using p-values to determine confounding.