| Table 1. Characteristics and ICSI outcomes according to air quality environment, ISO 7 versus ISO 5 | |||
| Characteristics and outcomes | ISO 7 |
ISO 5 |
p value |
|---|---|---|---|
| Number of patients | 97 | 131 | |
| Age ‡ (years; mean ± SD) | 35.23 ± 4.02 | 35.87 ± 4.39 | 0.20 |
| Retrieved MII oocytes ‡ |
6.83 ± 4.18 | 7.1 ± 4.27 | 0.62 |
| Fertilization rate | 0.76 | 0.74 | 0.87 |
| Cleavage rate | 0.95 | 0.97 | 0.72 |
| Good quality embryos ‡ |
1.95 ± 1.1 | 1.92 ± 0.87 | 0.81 |
| Embryos transferred ‡ |
2.63 ± 0.8 | 2.37 ± 0.6 | 0.0031 |
| Biochemical pregnancy rate | 0.34 | 0.51 | 0.0107 |
| Clinical pregnancy rate | 0.29 | 0.45 | 0.0136 |
| Implantation rate | 0.17 | 0.28 | 0.0110 |
Note: ‡ = Mann-Whitney test