Nordøy 2001.

Methods	12‐Week to 16‐week wash‐out dietary stabilisation period 10‐Week before‐and‐after study
Participants	42 men and women aged 28 to 61 years; TC ≥ 5.3 mmol/L (205 mg/dL), TG 2.0 to 15.0 mmol/L (177‐1329 mg/dL) Baseline TC: 7.99 mmol/L (309mg/dL) Baseline LDL‐C: 5.09 mmol/L (197 mg/dL) Baseline HDL‐C: 1.01 mmol/L (39 mg/dL) Baseline TG: 4.02 mmol/L (356 mg/dL)
Interventions	All participants were given atorvastatin 10 mg/d for 5 weeks After 5 weeks, all participants were randomly assigned to 2 groups: Atorvastatin 10 mg/d + omega‐3 fatty acids 2 g/d or another 5 weeks Atorvastatin 10 mg/d + placebo (corn oil) for another 5 weeks
Outcomes	Per cent change from baseline at 10 weeks of serum TC, LDL‐C, HDL‐C and TG
Notes	Both groups were analysed SDs were imputed
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Atorvastatin 10 mg/d; intervention was analysed, and as no placebo group was included for comparison, assessment of random sequence generation is not applicable
Allocation concealment (selection bias)	Unclear risk	Atorvastatin 10 mg/d; intervention was analysed, and as no placebo group was included for comparison, assessment of allocation concealment is not applicable
Blinding (performance bias and detection bias) All outcomes	Unclear risk	Atorvastatin 10 mg/d; intervention was analysed, and as no placebo group was included for comparison, blinding status is not applicable
Incomplete outcome data (attrition bias) All outcomes	Low risk	Data on all participants were reported
Selective reporting (reporting bias)	Low risk	All lipid parameters were measured
Other bias	Unclear risk	No source of funding was provided