Meta-Analysis
Copyright ©The Author(s) 2019.
World J Meta-Anal. Jun 30, 2019; 7(6): 323-338
Published online Jun 30, 2019. doi: 10.13105/wjma.v7.i6.323
Table 1 Characteristics of the included studies
First authorYearStudy periodCountryStudy designParticipant, nAge range (yr)Treatment period (d)Ref.
Simons20062004-2005AustraliaRandomized, double blind, placebo-controlled4430-7570[24]
Ooi2010-MalaysiaRandomized, double blind, placebo-controlled3218 years of age or older84[21]
Jones2012-CanadaRandomized, double blind, placebo-controlled12720-7563[19]
Fuentes2013-SpainRandomized, double blind, placebo-controlled6018-6584[15]
Sanchez2014-CanadaRandomized, double blind, placebo-controlled9318-55168[23]
Childs20142008-2009United KingdomRandomized, double blind, placebo-controlled, factorial, cross-over4225-6521[13]
Rajkumar2015-IndiaRandomized, single blind, placebo-controlled4520-2545[22]
Ahn20152012-2014South KoreaRandomized, double blind, placebo-controlled92-84[12]
Higashikawa20162013JapanRandomized, double blind, placebo-controlled4120-7084[17]
Fuentes20162010SpainRandomized, double blind, placebo-controlled6018-2584[16]
Kim2017-South KoreaRandomized, double blind, placebo-controlled66-84[20]
Costabile20172015United KingdomRandomized, double blind, placebo-controlled4618-5084[14]
Inoue2018-JapanRandomized, double blind, placebo-controlled3866-7884[18]