Table 3.

Results of inflammatory biomarker tests, subdivided by ulcer infection status

Test	Uninfected*	Infected*	AUROCC (95% CI)
White cell count (109 cells/L)†	7.43 (1.50) N = 32	8.15 (1.95) N = 27	0.62 (0.47–0.76)
Laboratory venous C‐reactive protein (mg/L)	4.5 (2.0–11.0) N = 32	7.0 (3.0–22.0) N = 27	0.62 (0.48–0.77)
Point‐of‐care venous C‐reactive protein (mg/L)	6.0 (5.0–15.5) N = 34	9.0 (5.0–17.0) N = 27	0.54 (0.39–0.69)
Venous procalcitonin (pg/ml)	21.8 (13.2–108) N = 13 (20 below limit)	4.8 (1.96–14.1) N = 4 (21 below limit)	Unable to calculate
Wound exudate calprotectin (ng/ml)	879 (586–2674) N = 33	1437 (664–6420) N = 25	0.56 (0.41–0.71)

Values are median (25th to 75th centiles), except ^†mean (sd).