Table 2

Study size, prevalence by category and quality scores of multiple sclerosis studies

Study name	Country	N	Mild	Moderate	Severe	Quality
Casetta 199810	Italy	394	0.561	0.175	0.264	1.00
Balasa 200711	Romania	152	0.441	0.250	0.309	1.00
Tsai 200412	Taiwan	43	0.651	0.233	0.116	0.60
Houzen 200313	Japan	31	0.645	0.129	0.226	1.00
Chancellor 200314	New Zealand	86	0.512	0.337	0.151	1.00
Cabre 200115	Caribbean	62	0.645	0.306	0.048	1.00
Bencsik 199816	Hungary	130	0.785	0.162	0.054	1.00
Lobinska 200417	Poland	204	0.632	0.260	0.108	1.00
Bencsik 200118	Hungary	248	0.149	0.540	0.310	0.60
Benedikz 200219	Iceland	290	0.710	0.179	0.110	1.00
Alvarez 199220	Chile	100	0.550	0.330	0.120	0.60
Arruda 200121	Brazil	200	0.610	0.225	0.165	1.00
Al-Araji 200522	Iraq	300	0.400	0.373	0.227	1.00
Pittock 2004 (1)23	USA	162	0.525	0.296	0.179	1.00
Pittock 2004 (2)23	USA	201	0.627	0.224	0.149	1.00
Modrego Pardo 199724	Spain	46	0.609	0.217	0.174	1.00
McDonnell 199825	Ireland	258	0.322	0.477	0.202	1.00
Tola 199926	Spain	54	0.574	0.296	0.130	1.00