Table 1. Median test (Mood test) for non-progressor [n = 70] vs. progressor [n = 7] groups.

Variable	p value***
S creat	0.045
eGFR	0.049
IgA (μg/mL)	0.155
Gd-IgA1 (U/1 μg IgA)*	0.155
Gd-IgA1 (U/mL)*	0.005
Gd-IgA1 (U/1 μg IgA) **	0.155
Gd-IgA1 (U/mL)**	0.005

* serum Gd-IgA1 without neuraminidase pretreatment

** serum Gd-IgA1 with neuraminidase pretreatment

***p values means the risk to reject the null hypothesis (the medians are all equal). Confidence level is 90% (cut-off 0.1). Bold numbers indicate statistically significant P values.

S-creat, serum creatinine (μmol/L); eGFR (MDRD, mL/min/1.73 m²)