Table 10.

Quality of the Evidence

Study Design	Quality	Kropmans et al 1999[27]				Reston and Turkelson 2003[28]
		Articles		Patients		Articles		Patients
		n	%	n	%	n	%	n	%
RCT	High	3	15.0	74	1.6	2	8.7	112	7.7
Quasi-RCT	Moderate	6	30.0	277	6.0	0	0.0	0	0.0
Observational Study	Low	0	0.0	0	0.0	5	21.7	425	29.0
Any Other Evidence	Very Low	11	55.0	4234	92.3	16	69.6	926	63.3
Total		20	100.0	4585	100.0	23	100.0	1463	100.0