Proteomic discovery and verification of serum amyloid A as a predictor marker of patients at risk of post-stroke infection: a pilot study

Table 2 Capacity of plasma concentrations of SAA to distinguish between patients who went on to develop an infection and those who did not

Day	Number of patients		Mean SAA concentration (µg/mL) ± SD			ROC curve
	No infection	Infection	No infection	Infection	p value	AUC (95% CI)	Cut-off	SP% (95% CI)	SE% (95% CI)
	No infection	Infection	No infection	Infection	p value	pAUC (95% CI)	Cut-off	SP 90–100% (95% CI)	SE% (95% CI)
0	19	21	16 ± 38.4	61.8 ± 96.7	0.01	73.2 (55.9–87)	14.2	84.2 (68.4–100)	61.9 (38.1–81)
0	19	21	16 ± 38.4	61.8 ± 96.7	0.01	2.53 (0–6.7)	24.7	94.7 (84.2–100)	42.9 (23.8–62.02)
1	19	17	28.2 ± 62.6	57.7 ± 92.9	0.005	77.1 (60.1–92)	8.8	63.2 (42.1–84.2)	88.2 (70.6–100)
1	19	17	28.2 ± 62.6	57.7 ± 92.9	0.005	2.3 (0.6–6.5)	133.4	94.7 (84.2–100)	35.3 (11.8–58.8)
3	19	21	27.6 ± 55.2	140.9 ± 136	0.001	80.7 (66.2–93.2)	21.4	84.2 (68.4–100)	71.4 (52.4–90.5)
3	19	21	27.6 ± 55.2	140.9 ± 136	0.001	3.6 (1.7–7.6)	233.9	100 (100–100)	33.3 (14.3–52.4)
5	19	21	33.6 ± 66.4	137 ± 123.5	0.003	76.7 (61.2–89.7)	87.8	94.7 (84.2–100)	57.1 (38.1–76.2)
5	19	21	33.6 ± 66.4	137 ± 123.5	0.003	3.5 (0.5–7.6)	87.8	94.7 (84.2–100)	57.1 (38.1–76.2)

ISSN: 1559-0275