Table 3.

Subgroup analysis.

Subgroup	N	Sensitivity	Specificity	DOR	AUC
Test time < 24 h
<24 h	5	0.84(0.70, 0.93)	0.72 (0.64, 0.79)	15 (5, 42)	0.81 (0.77–0.84)
24 h	4	0.83(0.70, 0.91)	0.83 (0.77, 0.87)	23 (11, 49)	0.89 (0.86–0.91)
ckd
No	8	0.79 (0.71,0.86)	0.77 (0.70,0.83)	13 (7,24)	0.83 (0.80–0.86)
Yes	1	95.2	75		0.742
Large sample size
≤100	4	0.79 (0.68,0.87)	0.77 (0.68,0.84)	13 (6,29)	0.84 (0.80–0.87)
>100	5	0.87 (0.75,0.94)	0.78 (0.67,0.86)	24 (9,69)	0.80 (0.76–0.83)