Table 5. Linear regression models of the effect of clinical outcomes, at different maternal age intervals.
Group	≤35 years old		36-38 years old		39-40 years old		>40 years old
Variable	RC	p	RC	p	RC	p	RC	p
Clinical outcomes
Cancelation rate	0.000	0.022	0.000	0.039	0.000	NS	0.000	NS
Implantation rate	-0.002	NS	-0.004	NS	-0.001	NS	0.001	NS
Clinical pegnancy rate	0.000	NS	0.000	NS	0.000	NS	0.000	NS
Miscarriage rate	0.001	NS	0.002	NS	0.001	NS	0.003	NS
Note: RC: regression coefficient, NS: non-significant (p>0.05).