Table II.

Comparison of serum IgA, fibronectin and complement C3 levels.

	IgA		Fibronectin (µg/ml)		Complement C3 (g/l)
Group	Pre-intervention	Post-intervention	Pre-intervention	Post-intervention	Pre-intervention	Post-intervention
Control	0.82±0.05	0.59±0.04	430.6±52.3	328.7±38.9	0.5±0.2	0.7±0.3
Observation	0.84±0.06	0.33±0.02	442.1±46.7	265.4±30.2	0.4±0.1	1.1±0.3
t-test	0.624	5.032	0.327	5.127	0.935	5.263
P-value	0.573	0.025	0.128	0.021	0.763	0.017