Smith 2006.

Methods	Randomised controlled trial in fertility clinic in Australia
Participants	228 randomised, 36 excluded: 110 in treatment group and 118 in control group. The average age of the control group (± SD) was 35.9 years (± 4.7) versus 36.1 years (± 4.8) in the study group; there were no differences in the number of previous treatment cycles, BMI, duration of subfertility.
Interventions	All women had 3 sessions: day 9 of stimulation, immediately before ET, and immediately after ET. For the sham acupuncture group a sham needle was used close to but not on the treatment point
Outcomes	Clinical pregnancy rates
Assisted conception protocols	Protocol breakdown not provided
Notes	After 3rd session, 24 in treatment group and 10 in control group guessed their allocation group correctly
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	‘randomization was in balanced, variable blocks of random size prepared by a researcher not involved in the trial’.
Allocation concealment (selection bias)	Unclear risk	Not stated specifically
Blinding (performance bias and detection bias) All outcomes	Unclear risk	Control groups had placebo needles (Streitberger) although after the 3rd session, 24 in the treatment group and 10 in the control group guessed their allocation group correctly.
Incomplete outcome data (attrition bias) All outcomes	High risk	228 subjects were randomized. 36 women had to be withdrawn (15%).
Selective reporting (reporting bias)	Unclear risk	LBR data not reported.
Other bias	Low risk	None known