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Table 1 Summary characteristics of 17 observational studies in the review

From: The association of glycemic level and prevalence of tuberculosis: a meta-analysis

Study Location Age Period Populations Outcomes
Cohort study
Golub 2019 Korea Adults 2001–2011 Non-DM (n = 766,231), DM (n = 52,820) Incident TB, recurrent TB
Lee 2016 Taiwan, China ≥ 30 years 2005–2012 DM (n = 11,260) Active TB
Leung 2008 China ≥ 65 years 2000–2005 DM (n = 6444) Active TB
Qiu 2017 China ≥18 years 2004–2014 DM (n = 170,399) TB
Case-contol study
Khalil 2016 Egypt All populations 2014–2015 DM (n = 80) Active TB
Leal 2019 Brazil ≥18 years 2007–2013 DM (n = 135) TB
Leegaard 2011 Denmark Adults 1980–2008 Non-DM (n = 5578), DM (n = 297) Active TB
Marupuru 2017 India ≥40 years 2015–2016 DM (n = 451) TB
Widjaja 2018 Indonesia 36–86 years 2017–2017 DM (n = 80) TB
Cross–sectional study
Almeida-Junior 2016 Brazil ≥18 years 2010–2011 DM (n = 80) TB
Berkowitz 2018 South Africa Adults 2014–2015 DM (n = 440) Active TB
Chan 2019 Malaysia ≥ 60 years 2016–2016 DM (n = 4209) Active TB
Hensel 2016 USA ≥21 years 2013–2014 Non-DM (n = 406), Pre-DM (n = 235), DM (n = 54) Latent TB
Kumpatla 2013 India 15 years 2012 DM (n = 6967) TB
Martinez-Aguilar 2015 Mexico Adults 2006–2007 DM (n = 600) Latent TB
Sanchez-Jimenez 2018 India Adults Not found DM (n = 50) Active TB
Webb 2009 South Africa < 21 years 2006–2007 DM (n = 258) Active TB
  1. Abbreviation: DM: Diabetes mellitus, TB: Tuberculosis