给出肾病数据集的csv格式

这里提供一个常用的肾病数据集 Chronic Kidney Disease (CKD) 数据集的 CSV 格式，包含 24 个特征和 1 个二元分类标签（'ckd' 和 'notckd'）。

数据集可以在以下网站下载得到：https://archive.ics.uci.edu/ml/datasets/chronic_kidney_disease

age,bp,sg,al,su,rbc,pc,pcc,ba,bgr,bu,sc,sod,pot,hemo,pcv,wc,rc,htn,dm,cad,appet,pe,ane,classification
48,80,1.02,1,0,?,normal,notpresent,notpresent,121,36,1.2,NaN,NaN,15.4,44,7800,5.2,yes,yes,no,good,no,no,ckd
7,50,1.02,4,0,?,normal,notpresent,notpresent,NaN,18,0.8,NaN,NaN,11.3,38,6000,NaN,no,no,no,good,no,no,ckd
62,80,1.01,2,3,normal,normal,notpresent,notpresent,423,53,1.8,NaN,NaN,9.6,31,7500,NaN,yes,yes,no,poor,no,yes,ckd
48,70,1.005,4,0,normal,abnormal,present,notpresent,117,56,3.8,111,2.5,11.2,32,6700,3.9,no,no,no,poor,yes,yes,ckd
51,80,1.01,2,0,normal,normal,notpresent,notpresent,106,26,1.4,NaN,NaN,11.6,35,7300,4.6,no,no,no,good,no,no,ckd
60,90,1.015,3,0,?,normal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,yes,yes,yes,good,yes,no,ckd
68,70,1.01,0,0,?,normal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,12.2,39,7800,4.4,no,yes,yes,good,no,no,ckd
24,NaN,1.015,2,4,normal,abnormal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,no,no,no,good,yes,no,ckd
52,100,1.015,3,0,normal,abnormal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,10.8,32,5800,3.7,yes,yes,no,good,no,yes,ckd
53,90,1.02,2,0,abnormal,abnormal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,9.5,29,7500,3.8,yes,yes,no,poor,no,yes,ckd
50,60,1.01,2,4,?,abnormal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,yes,yes,yes,poor,yes,yes,ckd
63,70,1.01,3,0,normal,abnormal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,10.8,32,6700,3.9,yes,yes,no,good,no,no,ckd
68,70,1.015,3,1,abnormal,abnormal,present,notpresent,NaN,NaN,NaN,NaN,NaN,9.7,28,5600,3.4,yes,yes,no,good,no,no,ckd
68,70,NaN,0,0,?,normal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,no,yes,no,good,no,no,ckd
68,80,1.01,0,0,?,normal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,9.8,28,7100,NaN,yes,yes,no,good,no,no,ckd
40,80,1.015,0,0,normal,normal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,12.6,40,6800,4.1,no,no,no,good,no,no,ckd
47,70,1.015,2,0,?,normal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,no,yes,no,good,no,no,ckd
47,80,NaN,0,0,?,normal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,no,no,no,good,no,no,ckd
60,100,1.025,0,3,normal,normal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,10.9,33,9600,4.5,yes,yes,no,good,no,no,ckd
62,60,1.015,1,0,normal,abnormal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,9.8,29,7200,3.8,yes,yes,yes,good,no,yes,ckd
61,80,1.015,2,0,normal,normal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,10.5,32,6300,3.7,yes,yes,no,poor,yes,no,ckd
60,90,1.02,0,2,abnormal,abnormal,present,notpresent,NaN,NaN,NaN,NaN,NaN,11.6,35,8400,5.0,yes,yes,yes,poor,yes,yes,ckd
48,80,1.025,4,0,normal,normal,notpresent,notpresent,124,49,1.6,NaN,NaN,12.5,39,6200,4.4,no,no,no,good,no,no,ckd
21,70,1.01,0,0,normal,normal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,12.4,44,6900,5.2,no,no,no,good,no,no,ckd
42,100,1.015,4,0,normal,abnormal,notpresent,notpresent,NaN,NaN,NaN,NaN,NaN,10.8,33,9600,4.0,yes,yes,no,good,yes,yes,ckd