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Table 1 Characteristics of the included studies

From: Relationship between alcohol-attributable disease and socioeconomic status, and the role of alcohol consumption in this relationship: a systematic review and meta-analysis

Author, Year, Country Study years Country Disease area Study type QA score Sex Age, yrs (mean or range) Cases Controls SES measure(s) (no. of strata) Alcohol measure (no. of strata)
Boing et al., 2011 [13] 1998-2006 Brazil Head & neck cancer CC 5 M&F NR 1,017 951 E (3), O (2) g/yr (5)
Braaten et al., 2005 [22] 1991-1997 Norway Cancers [Various] CO 7 F 30-69 93,638 NA E (4) g/d (4)
Brown et al., 2001 [19] 1986-1989 USA Oesophageal cancer CC 7 M 30-79 347 1,354 E (3), O (3), I (3) Drinks/wk (4)
Brown et al., 2005 [31] 1991-1994 & 2003 New Zealand Stroke CC 6 M&F 69 cases; 60 controls 1,242 2,247 I (2) Drinks/d (2)
Brummett et al., 2011 [38] NR USA Systolic BP CO 6 M&F 29 14,299 NA E (5), I (13), T (2) Days drank/wk; Drinks/wk (4)
Chaix et al., 2010 [39] 2007-2008 France Systolic BP CO 6 M&F 30-79 5,941 NA E (4), ES (3), T (2) Drinking status (4)
Conway et al., 2010 [14] 2002-2004 UK Head & neck cancer CC 7 M&F NR 103 91 A (5) Units/wk (5)
Day et al., 1993 [15] 1984-1985 USA Head & neck cancer CC 5 M&F 18-79 1,065 1,182 E (3), ES (2) Drinks/wk (5)
Dyer et al., 1999 [40] 1985-1986 USA Hypertension CO 8 M&F 18-30 4,747 NA E (2) ml/d (NA)
Gammon et al., 1997 [20] 1993-1995 USA Oesophageal cancer CC 6 M&F 66 221 695 E (6), I (5) Drinks/wk (6)
Greenberg et al., 1991 [16] 1984-1985 USA Head & neck cancer CC 5 M 18-79 762 837 E (3), O (3), ES (3) Drinks/wk (5)
Heck & Pamuk, 1997 [23] 1971-1975 UK Breast cancer CO 8 F NR 6,261 NA E (4), I (5) Last 12 months (2)
Joshi et al., 2008 [30] NR South Korea Liver cancer CO 7 M 30-59 548,530 NA O (4) g/d (5)
Kivimaki et al., 2009 [32] 2000-2004 Finland Stroke CO 7 F 44 48,361 NA O (3) g/wk (3)
Kropp et al., 2001 [24] 1992-1995 Germany Female breast cancer CC 7 F 43 706 1,381 E (3) g/d (6)
Kruk et al., 2007 [25] 2003-2007 Poland Female breast cancer CC 7 F 55 858 1,085 E (4), I (3) Drinks/wk (3)
Kuper et al., 2007 [33] 1991-1992 Sweden Stroke CO 8 F 40 47,942 NA E (4) g/d (4)
Laaksonen, et al., 2008 [34] 1979-2001 Finland Stroke CO 7 M&F 25-64 60,608 NA E (3) Drinks/wk (3)
Larsen et al., 2011 [26] 1993-1997 Denmark Female breast cancer CO 7 F 50-64 23,111 NA E (3), O (7), I (4) g/d (NA)
Martin-Moreno et al., 1993 [27] 1990-1991 Spain Female breast cancer CC 7 F 18-75 762 988 O (5) g/d (5)
Mattioli et al., 2006 [42] NR Italy Atrial fibrillation CC 6 M&F 54 116 116 E (3), I (3) ml/d (4)
McFadden et al., 2009 [35] 1993-1997 UK Stroke CO 9 M&F 39-79 22,488 NA O (5) Units/wk (3)
Melchior et al., 2005 [28] 1989-1990 France Cancers [Various] CO 6 M&F 35-50 20,346 NA O (3), OM Glasses/d (4)
Menvielle, et al., 2004 [17] 1989-1991 France Head & neck cancer CC 7 M NR 504 242 E (3), O (3) Glasses/d (6)
Petrovski et al., 2011 [43] 2005 Hungary Liver disease CC 5 M 55 cases; 54 controls 287 892 E (4) Units/wk (4); Problem drinking (2)
Radi et al., 2005 [41] 1997-1998 France Hypertension CC 5 M&F 42 M; 44 F 203 406 E (3) Glasses/d (2)
Robert et al., 2004 [29] 1988-1995 USA Female breast cancer CC 7 F 62 cases; 61 controls 7,179 7,488 E (4), A (5) Drinks/d (3)
Sharp et al., 2001 [21] 1993-1996 UK Oesophageal cancer CC 6 F NR 159 159 O (5) Units/wk (4)
Sundell et al., 2008 [36] 1987, 1992 & 1997 Finland Stroke CO 8 M&F 25-64 15,965 NA E (3) Binge drinking (2)
Veronesi et al., 2010 [37] 1986–1994 Italy Stroke CO 8 M&F 51 5,084 NA E (2) g/d (3)
Zatonski et al., 1991 [18] 1986-1987 Poland Head & neck cancer CC 7 M 53 cases; 44 controls 249 965 E (3), O (3) Yrs vodka consumption (4)
  1. NR, not reported. NA, not applicable. M, males. F, females. M&F, males and females. E, level of education. O, occupational social class. I, income. A, measure of area-level deprivation. ES, employment status. T, housing ownership or tenure. OM, occupational mobility. ml, millilitres. g, grams. yr, year. d, day. wk, week, BP, blood pressure.