| Table 3. Characteristics and ICSI outcomes for women aged > 35 years according to air quality enviornment, ISO 7 versus ISO 5 | |||
| Characteristic | ISO 7 |
ISO 5 |
p value |
|---|---|---|---|
| Number of patients | 46 | 70 | |
| Age ‡ (years; mean ± SD) | 38.63 ± 2.12 | 39.16 ± 2.2 | NS |
| Retrieved MII oocytes ‡ |
5.63 ± 2.85 | 6.16 ± 3.36 | NS |
| Fertilization rate | 0.74 | 0.72 | NS |
| Cleavage rate | 0.94 | 0.96 | NS |
| Good quality embryos ‡ |
1.98 ± 1.3 | 1.91 ± 1.0 | NS |
| Embryos transferred ‡ |
2.78 ± 0.9 | 2.54 ± 0.7 | NS |
| Biochemical pregnancy rate | 0.33 | 0.46 | NS |
| Clinical pregnancy rate | 0.30 | 0.37 | NS |
| Implantation rate | 0.16 | 0.18 | NS |
Note: ‡ = Mann-Whitney test