He 2008

Methods	Randomised controlled trial Study location: Department of Neonatology, Zangzhou Municipal Hospital, Fujian, China Study period: not stated
Participants	Population: 44 preterm infants, 7 days old
Interventions	Intervention: EPO group received 250 IU/kg/d 3 times weekly IV for 4 weeks (750 IU/kg/week, high dose). Use of iron is not stated, nor is it stated what the control group received.
Outcomes	Neonatal Behavioral Neurological Assessment at 40 weeks' PMA Gesell Developmental Schedule at 6 and 12 months after birth
Notes	This study has been published as a full report in Chinese. Only the abstract was written in English. We requested the full paper and if possible an English translation from the first author (2009‐08‐08). The only data provided with means and SDs were scores for the Neonatal Behavioral Neurological Assessment at 40 weeks' PMA.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	No information provided
Allocation concealment (selection bias)	Unclear risk	44 preterm infants randomly divided into 2 groups
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	As we have not been able to obtain an English translation of the full article, this item cannot be assessed.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	As we have not been able to obtain an English translation of the full article, this item cannot be assessed.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Complete follow‐up: unclear
Selective reporting (reporting bias)	Unclear risk	As we have not been able to obtain an English translation of the full article, this item cannot be assessed.
Other bias	Unclear risk	As we have not been able to obtain an English translation of the full article, this item cannot be assessed.