Table 1. ICSI. Variables associated with pregnancy likelihood in pregnant and non-pregnant women according to age groups (average).
Variables	<35 years (n=80)			35-39 years (n=42)			>39 years (n=21)
	P	NP	p	P	NP	p	P	NP	p
Age	30.64±31.05	31.05±2.24	0.2565	37.43±1.49	36.88±1.36	0.1192	40.8±1.16	41.4±1.50	0.1213
Injected M2 oocytes *	10.73±5.34	9.44±6.78	0.1757	4.68±2.44	8.03±5.07	0.0103	5.00±1.09	4.50±2.57	0.3461
Embryos D3	8.11±4.73	6.24±5.76	0.0596	3.68±2.25	5.51±4.54	0.0772	3.41±1.01	3.25±1.82	0.4345
Transferred embryos	2.71±0.73	2.42±0.67	0.0353	2.25±0.75	2.34±0.78	0.3516	2.80±0.74	2.37±0.69	0.1398
Day of transfer	3.45±0.76	3.44±0.81	0.4889	3.37±0.85	3.42±0.74	0.4262	2.60±0.48	3.13±1.10	0.0989
Type of transfer	1.20±0.41	1.37±0.81	0.1207	1.46±0.49	1.57±0.68	0.2997	1.40±0.48	1.62±0.92	0.3131
E2 (pg/ml) in MLP	835.26±724.93	417.81±222.90	0.0006	833.14±640.15	434.61±415.52	0.0118	841.04±351.15	394.40±189.60	0.0012
βHCG (mUI/ml) in MLP	20.83±21.82	0.70±1.59	0.0001	21.49±22.25	1.39±1.95	0.002	16.6±9.60	3.49±3.49	0.0182
* injected and rarely inseminated M2=mature E2=estradiol: MLP=mid-luteal phase (transfer day+7, TD7), T-Test=T-Test or Welch.