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. Author manuscript; available in PMC: 2020 Mar 27.
Published in final edited form as: Pediatr Dent. 2019 Mar 15;41(2):95–112.

Table 4. Overview of the Socioeconomic Status (SES) of the Population Studied in Each Study in the Meta-Analysis, Based on World Bank Classification.

High-income countries Upper-middle-income countries Lower-middle-income countries Lower-income countries
Low SES (n=3) High SES (n=1) Not mentioned (n=18) All SES profiles (n=1) Low SES (n=4) Not mentioned (n=2) — —
Lim et al. (2008)66;
Warren et al.(2009)42;
Ghazal et al. (2015)29 		Hong et al. (2014)56 Gao et al. (2014)55;
Watanabe et al. (2014)54;
Wigen and Wang (2011)77;
Tanaka et al. (2013)58;
Levy et al. (2003)68;
Kay et al. (2010)17;
Yonezu T et al. (2006)67;
Ansai et al. (2000)45;
Mattila et al. (1998)70;
Ollila et al. (1998)37;
Wendt et al. (1996)72;
Grindefjord et al. (1996)73;
Grytten et al. (1988)75;
Law and Seow (2006)39;
Gao et al. (2014)55;
Watanabe et al. (2014)54;
Wigen and Wang (2011)77;
Levy et al. (2003)68 		Warren et al. (2016)1 Feldens et al. (2010)64;
Oliveira et al. (2006)19;
Teanpaisan et al. (2007)18;
Targino et al. (2011)49 		Peltzer and Mongkochali (2015)51;
Zhou et al. (2012)31