Table 3.

ZRP levels (ng/ml) in relation to various disease conditions

Variable	Incident			Prevalent
	ZRP cases (n = 47)	ZRP controls (n = 47)	P value	ZRP cases (n = 18)	ZRP controls (n = 18)	P value
All
Mean (SD)	61.2 (9.9)	59.7 (10.7)	0.34a	63.2 (8.5)	57.0 (9.7)	0.02a
Median (IQR)	62.2 (14.5)	61.3 (15.8)	0.45b	63.7 (14.6)	58.3 (14.7)	0.03b
Min–max	39.7–81.1	40.6–80.8		51.1–78.5	40.9–72.8
Number non-missing	47	47		18	18

^aDifference between cases and controls tested by paired t-test (means)

^bWilcoxon signed-rank test (medians)