Table 2: Maternal variables and deliveries in FET cycles (n=273)
Parameter Live birth   P value
Yes No
n (%)
Age at OPU (n)
Age<30 (108)
30≤Age≤35 (93)
36≤Age≤40 (47)
Age≥41 (25) 		 
30 (55.6%)
13 (24.1%)
9 (16.7%)
2 (3.7%) 		 
78 (35.6%)
80 (36.5%)
38 (17.4%)
23 (10.5%) 		 
 
0.042**
Age at FET (n)
Age<30 (89)
30≤Age≤35 (92)
36≤Age≤40 (56)
Age≥41 (36) 		 
24 (44.4%)
16 (29.6%)
12 (22.2%)
2 (3.7%) 		 
65 (29.7%)
76 (34.7%)
44 (20.1%)
34 (15.5%) 		 
 
0.048**
Previous pregnancy (%)
Previous live birth (%) 		31.5
25.9 		36.1
18.3 		0.527*
0.206*
Infertility etiology
Male
Tubal
Endometriosis
Advanced age
Unexplained 		 
37 (68.5%)
4 (7.4%)
1 (1.9%)
7 (13.0%)
9 (16.7%) 		 
133 (61.0%)
33 (15.1%)
10 (4.6%)
45 (20.5%)
34 (15.6%) 		 
0.308*
0.138*
0.699**
0.204*
0.847*
Pregnancy In corresponding Fresh ET 35.2 32 0.651*
* x2-test    ** Fisher’s Exact test