Table 3. heterogeneity test analysis -(GT)n repeat length polymorphism with CHD.

Study	Heterogeneity test
	H	I2	P
Allele model(S/L)	1.21	31.40%	0.132
Recessive model(SS/SL+LL)	1.27	38.30%	0.078
Dominant model(SS+SL/LL)	1.07	12.40%	0.320
Co-dominant model(SL/LL)	1.01	2.70%	0.420
Co-dominant model(SS/LL)	1.25	35.90%	0.096