Table 2.

Chronic phase urine podocin mRNA and podocyte-equivalents per day^a

Group	n	Urine Podocin mRNA (ng/d)		Urine Podocyte-Equivalents per Day
		Mean ± SD	Range	Mean ± SD	Range
Normal	4	0.06 ± 0.10	0.00 to 0.21	552 ± 935	0 to 1944
Nonproteinurics	5	0.06 ± 0.03	0.00 to 0.08	561 ± 316	0 to 741
Limited proteinurics	4	1.27 ± 0.76	0.46 to 2.14	11,782 ± 7056	4259 to 19814
Progressors	8	14.04 ± 11.22b	11.00 to 36.00	129,977 ± 103,916b	24,074 to 333,333

^aValues for podocyte-equivalents per day were calculated using a recovery rate of 0.03% (see the Concise Methods section).

^bP < 0.01 compared with the data sets above in that column. These data assume that podocin mRNA in detached podocytes remains constant and similar to that of glomerular podocytes.