van Kaam 1998.

Methods	Blinding of randomisation: yes Blinding of intervention: can't tell but probably impossible Complete follow‐up: no Blinding of outcome measurement: can't tell
Participants	Premature infants, <2000g. Haemolysis excluded. Qualifying SBR determined by age and birthweight from graphs. Fibreoptic n=56, conventional n=68.
Interventions	Fibreoptic: BiliBlanket at 35 microwatts/cm2/nm (measured). Convnetional: White light (4 Phillips TLK 40 W/03) at 16 microwatts/cm2/nm (measured).
Outcomes	Duration of phototherapy. Use of exchange transfusion. Use of additional phototherapy.
Notes	Further data requested
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Low risk	A ‐ Adequate