Table II - .

Randomized trials on the efficacy of thiazide diuretics on the prevention of calcium stone disease.

Author	Follow-up	Nr.of patients		Stone/pt/year		% Remission		P
		Therapy	Placebo	Therapy	Placebo	Therapy	Placebo
Ohkawa, 1992	2	82	93	0.13	0.31	86.5	55.9	<0.05
Brocks, 1981	4	33	29	0.09	0.11	84.8	82.8	n.s
Scholz, 1982	1	25	26	0.2	0.2	76	76.9	n.s
Ettinger, 1988	4	23	31	0.05	0.22	87	54.8	<0.05
Lerum Larsen, 1984	3	23	25	0.07	0.18	78.3	52.0	0.05
Wilson, 1984	3	23	21	0.15	0.31	-	-	0.05
Robertson, 1985	3	13	9	0.22	0.58	-	-	sign
Borghi, 1993	3	19	21	0.06	0.28	84.2	57.1	<0.05