Table 2. Serum SAA in non-cancer (healthy), benign disease and USPC patients.

Subject group	N	Median (95% CI)a	Rangea
Healthy	51	6.0 (4.0–8.9)	1.6–169.2
Benign disease	42	6.0 (4.2–8.1)	1.1–189.9
USPC	30	15.6 (9.2–56.2)	2.1–4000
Pairwise comparison		Area under ROC curveb	P-valuec
Healthy vs benign		0.506	0.917
Healthy vs USPC		0.732	0.0005
Benign vs USPC		0.739	0.0006

^aMedians, 95% confidence intervals, and ranges of serum SAA are in μg ml⁻¹.

^bValues near 0.50 denote highly overlapping distributions; values near 1.00 denote highly separated distributions.

^cP-values are from the two-sided Wilcoxon–Mann–Whitney test of the indicated comparison.