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. 2019 Feb 24;2019:3801639. doi: 10.1155/2019/3801639

Table 2.

Correlation between Cr, Fe, and other indicators in serum and urine within each group.

    CON 
(n=50)		 P IFG 
(n=12)		 P IGT 
(n=15)		 P T1D 
(n=25)		 P T2D 
CON 
(n=29)		 P DN 
(n=24)		 P DR 
(n=34)		 P DPN 
(n=50)		 P
Glu (mmol/L) r1 -0.170 0.239 -0.220 0.491 0.065 0.819 0.137 0.515 -0.061 0.754 -0.023 0.914 0.030 0.866 0.115 0.427
r2 -0.482 <0.001∗ -0.004 0.991 -0.079 0.780 -0.389 0.055 -0.262 0.170 -0.279 0.186 -0.207 0.241 -0.159 0.269
r3 -0.063 0.663 0.068 0.834 0.387 0.154 0.332 0.105 0.231 0.228 -0.081 0.706 -0.179 0.310 0.139 0.335
r4 -0.109 0.453 -0.011 0.974 0.335 0.222 -0.171 0.413 0.003 0.986 -0.155 0.468 -0.086 0.629 -0.001 0.994
HbA1c (%) r1 -0.233 0.104 0.095 0.768 0.265 0.340 0.093 0.658 0.258 0.177 0.122 0.570 0.098 0.580 0.095 0.511
r2 -0.409 0.003∗ -0.212 0.507 0.032 0.909 0.139 0.507 -0.100 0.606 0.104 0.629 -0.055 0.759 0.175 0.224
r3 -0.060 0.681 0.050 0.877 0.518 0.048∗ 0.254 0.221 0.091 0.638 0.043 0.843 0.047 0.791 0.180 0.211
r4 -0.089 0.539 -0.007 0.983 0.483 0.068 0.289 0.161 0.138 0.476 0.222 0.298 -0.128 0.469 0.110 0.448
Cr (mg/L) r2 0.419 0.002∗ -0.154 0.634 0.464 0.081 0.283 0.170 0.557 0.002∗ 0.774 <0.001∗ 0.470 0.006∗ 0.500 <0.001∗
r3 0.096 0.505 0.121 0.707 0.216 0.438 0.390 0.054 0.022 0.910 0.228 0.284 0.143 0.419 0.149 0.302
r4 0.366 0.009∗ -0.655 0.021∗ 0.082 0.771 -0.169 0.421 -0.037 0.849 -0.157 0.463 0.112 0.528 -0.106 0.465
UCr (mg/L) r2 -0.116 0.421 -0.409 0.186 -0.041 0.884 0.096 0.647 -0.153 0.428 0.217 0.308 0.068 0.704 0.127 0.379
r4 0.665 <0.001∗ -0.032 0.921 0.623 0.013∗ 0.186 0.375 0.010 0.957 0.298 0.157 0.374 0.030∗ 0.255 0.074
Fe (mg/L) r4 -0.020 0.892 -0.102 0.753 -0.243 0.383 0.174 0.406 0.097 0.616 -0.063 0.771 0.021 0.905 0.092 0.525

r1 means the correlation coefficient between serum Cr and other indicators; r2 is the correlation coefficient between serum Fe and other indicators; r3 is the correlation coefficient between urinary Cr and other indicators; r4 is the correlation coefficient between urinary Fe and other indicators.∗P<0.05 means significant difference.