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. 2014 Jun 10;2014(6):CD001918. doi: 10.1002/14651858.CD001918.pub3

O'Neill 2004.

Methods Radnomised double blind, parallel trial.
Participants 145 participants recruited, 11 excluded, 134 completed trial. 69 participants with FH (57% female, mean age 53 years), 65 unaffected (69% female, mean age 46 years).
Interventions 3 treatment groups: STE: 1.6g + 1 placebo cereal bar daily; LSTA: 1.6g + 1 placebo cereal bar daily; HSTA: 1.6 g+ 1 g stanol ester daily. Each treatment lasted 2 months following a 1 month run‐in on placebo margarine and followed by a 1‐month washout on placebo margarine.
Outcomes Changes in serum lipids, total and LDL cholesterol, serum apoB and LDL cholesterol: apo B ratios, changes in non‐cholesterol sterols (lathosterol, sitosterol, campesterol), changes in 7 alpha OH‐cholestenone.
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Stated "randomised" but method not described.
Allocation concealment (selection bias) Unclear risk Unclear.
Blinding (performance bias and detection bias) 
 All outcomes Low risk Described as double‐blind, but not stated who was blinded.
Incomplete outcome data (attrition bias) 
 All outcomes Low risk All patients were included in the analysis.
Selective reporting (reporting bias) Low risk Reporting bias was not present.