Table 4. Sensitivity analysis of the association between apoE polymorphisms and ESRD.

Sensitivity analysis	Studies number	Heterogeneity (P value)	Model	OR (95 % CI)	P value
ε2ε2+ versus ε2ε2-	13	0.79	Fixed	1.91 (1.13, 3.22)	0.02
ε2ε3+ versus ε2ε3-	13	0.04	Random	1.32 (1.04, 1.66)	0.02
ε2ε4+ versus ε2ε4-	13	0.81	Fixed	1.46 (0.98, 2.17)	0.06
ε3ε3+ versus ε3ε3-	13	0.009	Random	0.96 (0.80, 1.14)	0.64
ε3ε4+ versus ε3ε4-	13	0.21	Fixed	0.85 (0.74, 0.96)	0.01
ε4ε4+ versus ε4ε4-	13	0.30	Fixed	0.57 (0.38, 0.86)	0.007
ε2+ versus ε2 -	13	0.24	Fixed	1.34 (1.17, 1.54)	0.0001
ε3+ versus ε3-	13	0.03	Random	0.96 (0.84, 1.11)	0.61
ε4+ versus ε4-	13	0.08	Random	0.83 (0.71, 0.97)	0.02