Table 1.

Study characteristics and demographics (mean ± standard deviation for age)

Study	Jadad score	Treatment duration (weeks)	EGb 761®			Placebo
			Na	% Female	Age (years)	N	% Female	Age (years)
Schneider et al, 20055	3	26	170	56	78 ± 7	174	52	77 ± 7
Napryeyenko et al, 20076	5	22	198	72	65 ± 8	197	72	63 ± 8
Nikolova et al, 20139	3	22	196	57	69 ± 8	201	60	69 ± 8
Ihl et al, 20117	5	24	202	69	65 ± 10	202	66	65 ± 9
Herrschaft et al, 20128	5	24	200	70	65 ± 9	202	69	65 ± 9

Note:

^aFull analysis set.

Abbreviation: N, number of patients.