Table 4.

Descriptive biases presented by the included clinical trials performed with açaí.

Study	Question Focus	Appropriate Randomization	Allocation Blinding	Double-Blind	Losses (<20%)	Prognostic and Demographic Characteristics	Outcomes	Intention to Treat Analysis	Sample Calculation	Adequate Follow-Up
Oppitz et al. [31]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
de Liz et al. [159]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Aranha et al. [142]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	NR	Yes
Kessler et al. [184]	Yes	NR	NR	NR	NR	NR	NR	NR	NR	Yes
Kim et al. [182]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	N	Yes	Yes
Pala et al. [178]	Yes	No	No	No	Yes	No	Yes	No	No	Yes
Alqurashi et al. [179]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	No
Carvalho-Peixoto et al. [180]	Yes	No	Yes	No	No	No	Yes	No	No	No
Gale et al. [181]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Udani et al. [183]	Yes	No	No	No	Yes	Yes	Yes	No	Yes	Yes

Abbreviations: NR, not reported.