Eggert 1988.

Study characteristics
Methods	Randomised controlled trial
Participants	Inclusion criteria: Newborns with uncomplicated hyperbilirubinaemia Exclusion criteria: Newborns under 40 hours of age with an ABO or Rh incompatibility Those treated with antibiotics Mean age in days at recruitment: Intervention = 3.15 Control = 2.56 Mean body weight in kg of participants: Intervention = 3.18 Control = 3.16 SDs for these means not reported
Interventions	Intervention: Drager 76 phototherapy unit equipped with 6 special blue fluorescent lights (Philips TL 20 W/52BAM blue emission range 410 to 520 nm, maximum 460 nm). Four outer walls of the incubator draped with white cloth additionally N = 36 Control: Drager 76 phototherapy unit equipped with 6 standard fluorescent lights (Philips TL 20 W/52BAM blue emission range 410 to 520 nm, maximum at 460 nm) used without drapes N = 34
Outcomes	Mean decrease in serum bilirubin after 24 hours of phototherapy Mean duration of phototherapy Adverse effects not reported
Notes	A third group included in the study used a different phototherapy unit. This group was not included in this review. Study was conducted in Germany
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not described in the manuscript
Allocation concealment (selection bias)	Unclear risk	Not described in the manuscript
Blinding of participants and personnel (performance bias) All outcomes	High risk	Participants: neonates by definition blinded, but parents not blinded. Clinicians/Nurses not blinded. The type of intervention may have influenced handling of the baby by parents and healthcare providers
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Not reported. We judged bilirubin measurement to be an objective measurement not affected by lack of blinding
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	No dropouts reported in the manuscript
Selective reporting (reporting bias)	Low risk	No protocol available. All expected outcomes and all outcome in the methods reported
Other bias	Low risk	No other sources of bias identified