Table 2.

Percentage of agreement between renal biopsy and Form 2728 by several characteristics

	n	% Agreement	χ2	df	P
Disease-specific
overall	217	14.8
Form 2728 classification “nonmissing”	93	34.4
biopsy relation to ESRD			0.36	1	0.5
biopsy before ESRD	178	14.6
biopsy after ESRD	32	18.8
race			2.79	1	0.09
white	128	11.7
black	79	20.3
sex			0.10	1	0.8
men	103	15.5
women	114	14.0
primary nephrologist			0.44	1	0.5
UNC-based	69	17.4
other	144	13.9
Disease categories
overall	217	23.0
Form 2728 classification “nonmissing”	93	53.8
biopsy relation to ESRD			0.03	1	0.9
biopsy before ESRD	178	23.6
biopsy after ESRD	32	25.0
race			0.32	1	0.6
white	128	21.9
black	79	25.3
sex			0.31	1	0.6
men	103	21.4
women	114	24.6
primary nephrologist			0.17	1	0.7
UNC-based	69	21.7
other	144	24.3