Table 2.

Distribution of clinical data in biopsied ARF according to age^a

Age (yr)	Male/Female Ratio	Hypertension (%)	Age (yr)	Serum Creatinine (mg/dl)	GFR (ml/min)	Proteinuria (g/24 h)	No. of Glomeruli
<15 (n = 43)	1.3	37.2	9	2.9	18.0	1.0	18
15 to 65 (n = 1191)	1.7	53.0	50	5.0	16.0	1.7	12
>65 (n = 1023)	1.3	58.3	73	5.5	11.0	1.4	11
Total	1.5	53,1	63	5.1	13.1	1.5	12
P	0.0007b	<0.003b	–	<0.001c	<0.001c	<0.001c	<0.0001c

^aData are medians.

^bχ² test.

^cKruskal-Wallis nonparametric test.