Table 4.

AUCs for AKI stratified according to admission serum glucose concentrations

Glucose (mg/dl)	AKI (n, %)	AUC-ROC	95% CI	Cut-off (U/g Cr)	Sensitivity	Specificity
Total AKI (n = 412)
<110 (n = 448)	77 (17.2)	0.643 ± 0.034	0.597–0.687	21.04	0.727	0.496
110 to < 140 (n = 468)	119 (25.4)	0.645 ± 0.029	0.600–0.689	28.47	0.546	0.673
140 to < 170 (n = 275)	93 (33.8)	0.639 ± 0.036	0.579–0.696	32.89	0.613	0.654
170 to < 200 (n = 123)	51 (41.5)	0.634 ± 0.052	0.543–0.719	29.80	0.726	0.569
≥ 200 (n = 123)	72 (58.5)	0.651 ± 0.052	0.560–0.735	28.03	0.778	0.549
Severe AKI (n = 109)
<110 (n = 448)	18 (4.0)	0.703 ± 0.068	0.658–0.745	38.37	0.667	0.770
110 to < 140 (n = 468)	27 (5.8)	0.756 ± 0.048	0.714–0.794	31.65	0.778	0.687
140 to < 170 (n = 275)	28 (10.2)	0.679 ± 0.049	0.621–0.734	33.95	0.750	0.615
170 to < 200 (n = 123)	13 (10.6)	0.680 ± 0.086	0.590–0.762	49.25	0.616	0.736
≥200 (n = 123)	23 (18.7)	0.703 ± 0.054	0.614–0.782	35.01	0.870	0.560

AUC area under the receiver operating characteristic curve, AKI acute kidney injury, n sample size, 95% CI, 95% confidence interval

Total AKI:

< 110 mg/dl versus 110 to < 140 mg/dl Z = 0.045, P = 0.964

< 110 mg/dl versus 140 to < 170 mg/dl Z = 0.081, P = 0.935

< 110 mg/dl versus 170 to < 200 mg/dl Z = 0.145, P = 0.885

< 110 mg/dl versus ≥200 mg/dl Z = 0.129, P = 0.897

110 to < 140 mg/dl versus 140 to < 170 mg/dl Z = 0.131, P = 0.895

110 to < 140 mg/dl versus 170 to < 200 mg/dl Z = 0.185, P = 0.853

110 to < 140 mg/dl versus ≥200 mg/dl Z = 0.102, P = 0.919

140 to < 170 mg/dl versus 170 to < 200 mg/dl Z = 0.079, P = 0.937

140 to < 170 mg/dl versus ≥200 mg/dl Z = 0.192, P = 0.848

170 to < 200 mg/dl versus ≥200 mg/dl Z = 0.232, P = 0.816

Severe AKI:

< 110 mg/dl versus 110 to < 140 mg/dl Z = 0.635, P = 0.525

< 110 mg/dl versus 140 to < 170 mg/dl Z = 0.287, P = 0.774

< 110 mg/dl versus 170 to < 200 mg/dl Z = 0.210, P = 0.834

< 110 mg/dl versus ≥200 mg/dl Z = 0, P = 1

110 to < 140 mg/dl versus 140 to < 170 mg/dl Z = 1.125, P = 0.261

110 to < 140 mg/dl versus 170 to < 200 mg/dl Z = 0.773, P = 0.440

110 to < 140 mg/dl versus ≥200 mg/dl Z = 0.734, P = 0.463

140 to < 170 mg/dl versus 170 to < 200 mg/dl Z = 0.010, P = 0.992

140 to < 170 mg/dl versus ≥200 mg/dl Z = 0.331, P = 0.740

170 to < 200 mg/dl versus ≥200 mg/dl Z = 0.227, P = 0.820