Table 4. The proportion of IgAN patients who were grouped as co-dominant model and recessive model for different age groups.

Age of onset (years)	CC (n = 59)	GC (n = 64)	GG (n = 22)	p-value
18–30	35 (49.29%)	29 (40.85%)	7 (9.86%)
30–40	17 (36.96%)	23 (41.07%)	6 (13.04%)	0.033
40 –	7 (25.00%)	12 (42.86%)	9 (32.14%)
	CC/GC (n = 123)	GG (n = 22)
18–30	64 (90.14%)	7 (9.86%)
30–40	40 (86.96%)	6 (13.04%)		0.001
40 –	19 (67.86%)	9 (32.14%)

Comparisons between groups were made by the χ2 test as appropriate.