Crawford 2015.

Methods	Parallel group study Number of women randomised: 186 (91 in the intervention group; 95 in the control group) Number of cancellations: none reported Number of women analysed: 186
Participants	Country of authors: United Kingdom and Australia Inclusion criteria: women aged 23 to 39 years, < 2 previous IVF attempts Exclusion criteria: not reported. Mean age: not reported Mean duration of infertility: not reported Women with primary infertility: not reported Setting: assisted reproduction programme in Homerton University Hospital
Interventions	Intervention: intrauterine injection of 0.5 ml seminal plasma immediately after the oocyte pick‐up procedure Control: intrauterine injection of 0.5 ml culture medium immediately after the oocyte pick‐up procedure
Outcomes	Clinical pregnancy rate
Notes	Abstract
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not reported
Allocation concealment (selection bias)	Unclear risk	Not reported
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Both clinicians and participants were blinded
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Objectively measured outcome
Incomplete outcome data (attrition bias) All outcomes	Low risk	Accounted for all randomised women
Selective reporting (reporting bias)	Unclear risk	Unable to assess
Other bias	Unclear risk	Unable to assess