Table 2.

Number of sera from systemic lupus erythematosus (SLE) patients with high or low anti-C1q and anti-mannose-binding lectin (anti-MBL) levels during inactive and active phases of disease

	Number of sera with high or low anti-C1q levels		Number of sera with high or low anti-MBL levels
Disease activity	> 90 aU/ml	< 90 aU/ml	> 100 aU/ml	< 100 aU/ml
Inactive	17	13	15	17
Active	34	4	22	14
	Fisher exact test P = 0·005		Fisher exact test P = 0·3

The value for high levels of anti-MBL was set at a level at which 10% of the healthy control group were considered as having high anti-MBL levels. Thereby, anti-MBL levels>100 arbitrary units (aU)/ml were defined as high.