The Use of Green Coffee Extract as a Weight Loss Supplement: A Systematic Review and Meta-Analysis of Randomised Clinical Trials

Table 1

Methodological characteristics of included studies.

Author Year Country

Main outcome (s)

Main diagnoses of study participants

Study design

Gender M/F

Randomisation appropriate?

Allocation concealed?

Groups similar at baseline?

Similar follow-up of groups?

Outcome assessor blinded?

Care provider blinded?

Patients blinded?

Attrition bias?

ITT analysis?

∗Ayton Research 2009 United Kingdom

Body weight, waist, bust and hip circumference

Healthy overweight subjects

Parallel

Unclear

?

?

+

+

?

?

?

?

?

Thom 2007 Norway

Body weight, body mass index

Slight to moderately overweight subjects

Parallel

12/18

?

?

+

+

?

?

?

−

−

Dellalibera 1998 France

Body weight, body mass index

Overweight volunteers

Parallel

Unclear

?

?

+

+

?

?

?

−

−

Abbreviation: ITT (intention-to-treat); M/F: Males/Females.
Symbols: ∗: Unpublished study, +: Yes, −: No, ?: Unclear.