Table 2 Main characteristics of the studies selected
Author | Sample size | Year of publication | Year of implementation | Country | Design | Quality of the evidence | Adjusted variables in the studies |
|---|---|---|---|---|---|---|---|
Preau et al. [1] | 243 | 2007 | 1995–97 | France | Cohort | Very good | Sex, education status and employment status |
Mitchell et al. [2] | 300 | 2015 | 2015 | USA | Cross-sectional | Very good | Sex and injection drug use |
Rubenis et al. [3] | 108 | 2017 | 2017 | Australia | Cohort | Very good | Age, sex, year of education and employment status |
Brown et al. [4] | 369 | 2015 | 2009–2011 | USA | Cross-sectional | Good | Education status, race and employment status |
Tracy et al. [5] | 240 | 2012 | 2009 | USA | Cross-sectional | Very good | Age, educational status and race |
Yen et al. [6] | 802 | 2015 | 2012–2013 | Taiwan | Cross-sectional | Satisfactory | Age and educational status |
Strada et al. [7] | 2176 | 2019 | 2014–2016 | Germany | Cross-sectional | Good | Employment status, housing status, having and living with children |
Wang et al. [8] | 368 | 2012 | 2007–2008 | Taiwan | Cohort | Very good | Age and educational status |
Ubuguyu et al. [9] | 288 | 2016 | 2011–2012 | Tanzania | Cohort | Very good | Age, sex and employment status |
Lahmek et al. [10] | 414 | 2009 | 2009 | France | Cross-sectional | Good | Race and education status |
Pokhrel et al. [11] | 682 | 2017 | 2015 | Nepal | Cross-sectional | Good | Age and sex |
Kertesz et al. [12] | 274 | 2005 | 2005 | USA | Cohort | Satisfactory | Employment status, housing status and income status |
Dawson et al. [13] | 22,245 | 2009 | 2001–2002 | USA | Cross-sectional | Very good | Age, sex and family history |
Korthuis et al. [14] | 289 | 2012 | 2004–2009 | USA | Cross-sectional | Good | Age, educational status and race |
Lev-Ran et al. [15] | 43,093 | 2012 | 2012 | Canada | Cross-sectional | Very good | Age, sex, income status, race and marital status |
Daeppen et al. [16] | 160 | 2014 | 2014 | Switzerland | Cross-sectional | Good | Employment and marital status |
Byrne et al. [17] | 190 | 2016 | 2016 | Ireland | Cross-sectional | Very good | Sex and age |