Cattoli 1994.
Methods | Single‐centre parallel RCT | |
Participants | 100 women Inclusion criteria: women who had cryopreservation of embryos following IVF treatment Exclusion criteria: not stated Mean number of transferred embryos per woman: similar, HT group 2.7 ± 0.0 (1‐4 embryos), natural cycle group 2.8 ± 0.8 (1‐5 embryos) |
|
Interventions |
FET HT cycle (56 women (64 cycles)) Natural cycle FET (44 women (50 cycles)) |
|
Outcomes | Clinical pregnancy rate per woman Multiple pregnancy rate per pregnancy |
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Notes | This was an abstract. The review authors contacted the first author requesting more data but as this study was not published and was presented in 1994, the study author could not supply any more data. | |
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | Process involved in random sequence generation not reported |
Allocation concealment (selection bias) | Unclear risk | Methods used in allocation concealment not reported |
Blinding (performance bias and detection bias) All outcomes | Unclear risk | No information provided on the blinding of participants and personnel |
Incomplete outcome data (attrition bias) All outcomes | Unclear risk | No reports on number of missing outcome data and reasons for drop out or exclusion from study |
Selective reporting (reporting bias) | Unclear risk | Insufficient information reported to arrive at a judgement |
Other bias | Unclear risk | Insufficient information reported to arrive at a judgement |