Table 3 Quality of the evidence and strength of recommendations for human clinical trials ¹

Studies that specifically measured executive function (n = 4)

McKee et al. 2013 [29]

Yes

Moderate

Strong

Cruise et al. 2011 [26]

Yes

Moderate

Strong

Ridgel et al. 2011 [28]

Yes

Moderate

Strong

Tanaka et al. 2009 [27]

Yes

Moderate

Strong

Studies that measured unspecified aspects of cognition (n = 4)

Dos Santos Mendes et al. 2012 [25]

Yes

Low

Weak

Pompeu et al. 2012 [24]

Yes

Low

Weak

Müller et al. 2010 [23]

Yes

Low

Weak

Baatile et al. 2000 [22]

Yes

Low

Weak