Effects of receiving renal biopsy on the prognosis of chronic kidney disease patients with impaired renal function

Table 3 The renal outcome for patients with impaired renal function receiving renal biopsy or not

	Renal biopsy (n = 150)	Non-Renal biopsy (n = 150)	P-value
*eGFR during the follow-up period**
1 year	58.8 ± 24.8	53.0 ± 19.9	0.039
2 years	57.4 ± 26.5	47.6 ± 22.1	0.004
3 years	61.8 ± 27.8	40.5 ± 23.8	< 0.001
4 years	59.2 ± 38.1	40.2 ± 24.7	0.001
5 years	67.4 ± 37.8	29.8 ± 19.1	< 0.001
Endpoints
≥ 50% decline from baseline, n (%)	16(10.7%)	44(29.3%)	< 0.001
< 15mL/min/1.73m², n (%)	17(11.3%)	33(22.0%)	0.013
Composite endpoints	24(16.0%)	46 (30.7%)	0.003

Data were given as means ± standard deviations for continuous features and cases(percentage) for categorical features.
* The estimated glomerular filtration rate as calculated by the Modification of Diet in Renal Disease equation.
P value: comparation between renal biopsy and non-renal biopsy group. Composite endpoints: incident of either of the eGFR declined ≥ 50% from baseline or eGFR decreased to < 15mL/min/1.73m² or both during the follow-up time. eGFR, estimated glomerular filtration rate.

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