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The outcome parameters in both groups
| Outcome measures | SP group | noSP group | P value |
|---|---|---|---|
| Pregnancy n (%) | clinical | 91 (55.5 %) | 80 (44 %) |
| negative | 65 (39.6 %) | 93 (51.1 %) | |
| biochemical | 8 (4.9 %) | 9 (4.9 %) | |
| Clinical pregnancy (n) | Single | 61 | 45 |
| Twins | 28 | 33 | |
| triplets | 2 | 2 | |
| Pregnancy rate (%) | 55.5 % (91/164) | 44 % (80/182) | 0.09 |
| Implantation rate % (*) | 34.7 (123/372) | 27.5 (117/425) | 0.026** |
*number of embryos with heart beat on ultrasound/number of embryos transferred
**one-tailed t-test
