| Table 3. Comparison of ICSI outcomes between the seasons |
| ICSI outcomes |
Winter |
Autumn |
Spring |
Summer |
p |
| n:369 |
n:258 |
n:462 |
n:176 |
| Fertilization rate (%) |
85.0±1.3a |
84.7±1.6a |
76.6±1.2b |
75.8±1.9b |
< 0.01 |
| Blastocyst formation rate |
58.0±1.6 |
56.2±2.0 |
53.7±1.5 |
55.8±2.4 |
0.287 |
| Pregnancy rate (%) |
31.1±4.8 |
44.0±7.0 |
31.3±5.1 |
50.0±7.7 |
0.092 |
| Implantation rate |
21.9±4.9a |
31.0±7.8b |
24.0±5.4c |
39.3±9.6d |
< 0.01 |
| |
|
|
|
|
|
| Note: Values are means±standard errors, unless otherwise noted. Different subscripts within the same line indicate statistically significant difference. n: Number of patients. |