Table 1 Characteristics of all included articles

From: The effects of green tea on weight loss and weight maintenance: a meta-analysis

Author Year Duration (weeks) Sample Size (n) BMI (kg/m2) Gender Age (years) Dosage (mg per day) Regular caffeine intake (mg per day) Ethnicity Outcome
Kovacs et al.19 2004 13 GT=51 PL=53 25–35 M/F 18–60 GT= 573 PL=0 >300 Caucasian No weight maintenance
Westerterp-Plantenga et al.20 2005 13 GT=19 PL=19 25–35 M/F 18–60 GT=270 PL=0 <300 Caucasian Weight maintenance
Westerterp-Plantenga et al.20 2005 13 GT=19 PL=19 25–35 M/F 18–60 GT=270 PL=0 >300 Caucasian No weight maintenance
Diepvens et al.18 2005 13 GT=23 PL=23 25–31 F 19–57 GT=1207 PL=0 >300 Caucasian No weight loss
Hase et al.14 2001 12 GT=12 PL=11 18.5–30 M 27–47 GT=483 PL=119 <300 Japanese Weight loss
Nagao et al.12 2001 12 GT=13 PL=12 24.3–34.6 M 24–49 GT=541 PL=130 <300 Japanese Weight loss
Tsuchida et al.11 2002 12 GT=39 PL=41 24–30 M/F 30–65 GT=588 PL=126 <300 Japanese Weight loss
Kozuma et al.10 2005 12 GT=53 PL=64 25–35 F 20–65 GT=540 PL=0 <300 Japanese Weight loss
Kozuma et al.10 2005 12 GT=54 PL=55 25–35 M 20–65 GT=540 PL=0 <300 Japanese Weight loss
Nagao et al.13 2007 12 GT=123 PL=117 24–30 M/F 25–55 GT=583 PL=96 <300 Japanese Weight loss
Auvichayapat et al.15 2008 12 GT=30 PL=30 >25 M/F 40–60 GT=750 PL=0 <300 Thai Weight loss
Hsu et al.16 2008 12 GT=41 PL=37 >27 F 16–60 GT=491 PL=0 <300 Taiwanese No weight loss
Wang et al.17 2008 12 GT=49 PL=43 24 <35 M/F 18–50 GT=440 PL=0 <300 Chinese No weight loss
Wang et al.17 2008 12 GT=47 PL=43 24 <35 M/F 18–50 GT=468 PL=0 <300 Chinese No weight loss
Wang et al.17 2008 12 GT=43 PL=43 24 <35 M/F 18–50 GT=880 PL=0 <300 Chinese Weight loss
  1. Abbreviations: BMI, body mass index; F, female; GT, EGCG–caffeine mixture group; M, male; PL, placebo group.