Moller 1993.

Methods	Single center randomized controlled trial. Masking of allocation unclear; masking of intervention to nursing and housestaff but not to attending physicians. Completeness of follow up: yes. Masking of outcome assessment: no.
Participants	41 preterm infants less than 1500 g
Interventions	Vancomycin i.v. at 10 mg/kgday in two doses.
Outcomes	CoNS sepsis
Notes	A 3 phase "study", the middle phase of the study is a report of a randomized controlled trial n=41
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear