Table 2.
IVF cycle characteristics in OCP and non-OCP cycles according to age groups
| Young (≤35 years) | Older (≥36 years) | |||||
|---|---|---|---|---|---|---|
| OCP (281 cycles) | Non-OCP (646 cycles) | P | OCP (323 cycles) | Non-OCP (549 cycles) | P | |
| COH | ||||||
| Stimulation length (days) | 11.30 ± 0.15 | 9.08 ± 0.10 | <0.0001 | 11.37 ± 0.14 | 8.74 ± 0.11 | <0.0001 |
| Total dose of FSH (IU) | 3210 ± 1898 | 2565 ± 1500 | <0.0001 | 4973 ± 2010 | 3983 ± 1815 | <0.0001 |
| hCG day | ||||||
| Endometrium (mm) | 9.26 ± 0.14 | 9.78 ± 0.09 | 0.087 | 8.64 ± 0.13 | 9.27 ± 0.10 | <0.0001 |
| E2 (pmol/l) | 4828 ± 181 | 5116 ± 121 | <0.01 | 4519 ± 169 | 3990 ± 131 | <0.01 |
| Follicles (=14 mm) | 8.81 ± 0.22 | 8.38 ± 0.15 | 0.59 | 5.70 ± 0.21 | 5.49 ± 0.16 | 0.29 |
| IVF laboratory data | ||||||
| Oocytes retrieved | 10.41 ± 0.35 | 10.16 ± 0.23 | 0.91 | 6.66 ± 0.32 | 6.19 ± 0.25 | 0.49 |
| Fertilization rate (%) | ||||||
| Insemination | 57.6 | 62.0 | 0.87 | 60.3 | 59.0 | 0.69 |
| ICSI | 59.5 | 59.9 | 0.70 | 54.2 | 58.0 | 0.20 |
| Embryos transferred | 2.1 ± 1.0 | 2.06 ± 0.94 | 0.42 | 2.1 ± 1.4 | 2.1 ± 1.4 | 0.98 |
| Embryos frozen | 1.5 ± 2.6 | 1.6 ± 2.9 | 0.70 | 0.5 ± 1.5 | 0.4 ± 1.7 | 0.85 |
Stim. Length (Days) All OCP (11.34 ± −0.10) > all Non-OCP (8.92 ± −0.07) (P < 0.001)
Endom. (mm) All OCP (8.96 ± −0.09) < All Non-OCP (9.53 ± 0.07) (P < 0.001)
All Young (9.60 ± −0.08) > All Old (9.05 ± −0.08) (P < 0.01)
Follicles (>14 mm) All Young (8.53 ± −0.13) > All Old (5.56 ± 0.13 (P < 0.001)
Ooctyes Retrieved All Young (10.25 ± −0.19) > All Old (6.34 ± −0.20) (P < 0.001)
For each of the nominated variables, the estimated mean values and standard errors are presented for each of the four sub-classes.