Table 4. Recurrence of urinary stones: predominance in young adults.

Analysis of urinary stone recurrence with reference to various factors.

veg: vegetarian; non-veg: non-vegetarian; lit: liters

Parameters		Age range									Chi-square test
		01-10	11-20	21-30	31-40	41-50	51-60	61-70	71-80	81-90
											Chi-square, df	p-value
Recurrence cases (n=57/530)		1 (1.7)	6 (10.5)	21 (36.8)	16 (28.0)	10 (17.5)	1 (1.7)	2 (3.5)	0 (0)	0 (0)
Diet	Veg diet	0 (0)	2 (3.5)	6 (10.5)	4 (7.0)	5 (8.7)	0 (0)	2 (3.5)	0 (0)	0 (0)	6.946,6	0.3242
	Non-veg diet	1 (1.7)	4 (7.0)	15 (26.3)	12 (21.0)	5 (8.7)	1 (1.7)	0 (0)	0 (0)	0 (0)
Water intake	≥ 4 lit water/day	0 (0)	1 (1.7)	5 (8.7)	7 (12.2)	3 (5.2)	0 (0)	1 (1.7)	0 (0)	0 (0)	3.581,6	0.7332
	≤ 2 lit water/day	1 (1.7)	5 (8.7)	16 (28.0)	9 (15.7)	7 (12.2)	1 (1.7)	1 (1.7)	0 (0)	0 (0)
Stone location	Kidney	0 (0)	3 (5.2)	15 (26.3)	9 (15.7)	5 (8.7)	1 (1.7)	1 (1.7)	0 (0)	0(0)	14.84,12	0.2505
	Bladder	1 (1.7)	3 (5.2)	2 (3.5)	5 (8.7)	1 (1.7)	0 (0)	1 (1.7)	0 (0)	0(0)
	Ureter	0 (0)	0 (0)	4 (7.0)	2 (3.5)	4 (7.0)	0 (0)	0 (0)	0 (0)	0(0)
Gender	Male	1 (1.7)	4 (7.0)	15 (26.3)	11 (19.2)	6 (10.5)	1 (1.7)	1 (1.7)	0 (0)	0 (0)	1.663,6	0.948
	Female	0 (0)	2 (3.5)	6 (10.5)	5 (3.5)	4 (7.0)	0 (0)	1 (1.7)	0 (0)	0 (0)