Table 3 Pregnancy outcomes and OHSS
Drilling group | Control group | p | |
|---|---|---|---|
Pregnancy rate: confirmed by HCG then US | |||
Yes | 52 (51%) | 35 (36%) | 0.044 |
No | 49 (49%) | 64 (64%) | |
EER (experimental event rate) | 0.51 | ||
CER (control event rate) | 0.36 | ||
ARR (absolute risk reduction) | − 0.15 (− 0.28 to − 0.02) | ||
NNT (number needed to treat) | − 6.61 (− 3.65 to − 65.46) | ||
NNH (number needed to harm) | 6.61 (3.65 to 65.46) | ||
Pregnancy outcome | |||
Single | 46 (45.5%) | 32 (32.3%) | 0.3 |
Twins | 5 (5.0%) | 2 (2.0%) | |
Triplets | 1 (1.0%) | 1 (1.0%) | |
Implantation rate | 17.8% | 14.5% | 0.3 |
Abortion rate till 20 weeks | 5 (9.6%) | 4 (10.8%) | 0.6 |
Live birth rate | 42 (41%) | 29 (29%) | 0.075 |
OHSS | |||
No | 90 (89%) | 76 (77%) | 0.046 |
Mild | 8 (8%) | 3 (3%) | |
Moderate | 3 (3%) | 13 (13%) | |
Severe | 0 (0%) | 7 (7%) | |
Coasting: to stop stimulation for fear of OHSS | |||
No coasting | 99 (98%) | 81 (82%) | < 0.001 |
Coasting | 2 (2%) | 18 (18%) | |