Female age (years) |
37.4 ± 1.8 |
38.1 ± 2.1 |
0.001 |
36-37, n (%) |
152 (63.3) |
95 (50.3) |
0.006 |
38-39, n (%) |
61 (25.4) |
54 (28.6) |
|
≥40, n (%) |
27 (11.3) |
40 (21.2) |
|
BMI (kg/m2) |
22.9 ± 2.9 |
23.2 ± 2.9 |
0.279 |
Primary infertility, n (%) |
44 (18.3) |
38 (20.1) |
0.643 |
Infertility duration (years) |
4.1 ± 3.5 |
4.9 ± 4.4 |
0.05 |
Rank of cycle, Median (range) |
1 (1-3) |
1 (1-4) |
<0.001 |
Level of education, n (%) |
|
|
|
Primary school or lower |
19 (7.9) |
14 (7.4) |
0.389 |
Secondary school |
141 (58.8) |
123 (65.1) |
|
University or higher |
80 (33.3) |
52 (27.5) |
|
Infertility diagnosis, n (%) |
|
|
|
Tubal factor |
123 (51.2) |
97 (51.3) |
0.098 |
Ovulatory dysfunction |
9 (3.8) |
17 (9.0) |
|
Endometriosis |
4 (1.7) |
1 (0.5) |
|
Male factor |
35 (14.6) |
34 (18.0) |
|
Unexplained |
20 (8.3) |
11 (5.8) |
|
Multiple factors |
49 (20.4) |
29 (15.3) |
|
Year of oocyte retrieval, n (%) |
|
|
|
2015 |
26 (10.8) |
41 (21.7) |
<0.001 |
2016 |
40 (16.7) |
48 (25.4) |
|
2017 |
66 (27.5) |
35 (18.5) |
|
2018 |
108 (45.0) |
65 (34.4) |
|
Insemination methods, n (%) |
|
|
|
IVF |
195 (81.3) |
150 (79.4) |
0.600 |
ICSI |
39 (16.3) |
31 (16.4) |
|
Mixed IVF and ICSI |
6 (2.5) |
8 (4.2) |
|
No. of oocytes retrieved |
11.5 ± 4.0 |
11.1 ± 4.1 |
0.184 |
No. of 2PN |
8.2 ± 3.1 |
7.9 ± 3.3 |
0.359 |
No. of viable embryos |
7.5 ± 2.8 |
7.3 ± 3.1 |
0.486 |
Total blastocysts per patient |
4.9 ± 2.0 |
4.4 ± 2.3 |
0.011 |
Good-quality, n (%) |
159 (66.3) |
48 (25.4) |
<0.001 |
No. of supernumerary blastocysts for vitrification |
3.9 ± 2.0 |
2.4 ±
2.3 |
<0.001 |