Study	General improvement				Treatment preference				Side effects				Withdrawals
	Treatment		Placebo		Treatment		Placebo		Treatment		Placebo		Treatment		Placebo
	Events	Total	Events	Total	Events	Total	Events	Total	Events	Total	Events	Total	Events	Total	Events	Total
Aldoori 1986									10	13	4	13
Bravard 1983	5	5	3	5
Challenor 1989									16	24	5	24	2	24	0	24
Corbin 1986					15	22	2	22	14	23	2	23	3	22	0	22
Ettinger 1984	15	19	12	19					12	22	1	22
Ferri 1992									2	21	0	21
French Co‐op 1991									19	69	7	69	2	69	5	69
Gjorup 1986a					12	19	4	19	5	19	0	19
Gjorup 1986b					19	21	0	21	16	21	0	21	4	26	0	26
Hawkins 1985									19	57	6	57	7	57	1	57
Kahan 1985a	12	15	1	15					6	15	2	15
Kahan 1985b	9	16	3	16					6	16	2	16
Kahan 1985c									9	30	3	30
Kahan 1987									7	20	2	20	7	20	2	20
Kallenberg 1987	14	15	0	15
Kinney 1982									3	14	10	14
Kirch 1987	8	10	2	10					2	10	2	10
La Civita 1997									11	20	0	20
Leppert 1989									5	10	3	10
Meyrick Thomas 1987									1	9	2	9	1	10	0	10
Nilsson 1987									20	28	8	28	1	28	0	28
Rhedda 1985									2	19	1	19
Rodeheffer 1983	9	15	2	15	15	27	11	27	12	15	3	15
Rupp 1987									15	27	9	27
Smith 1982									15	17	1	17
Taixeira Da Costa 1987	4	14	6	14
Waller 1986									26	29	5	29
Wigley 1987									12	25	7	25	12	25	7	25
White 1982	9	11	1	11
Wollersheim 1991													2	25	1	25
Total	76	109	29	109	61	89	17	89	265	573	85	573	39	281	15	281