Odds ratio for coronary heart disease in relation to blood fatty acids concentration according to study covariates. Results are expressed as odds ratio (and 95% CI) per SD unit increase in blood fatty acids concentration. Model was adjusted for recruitment place, demographic and lifestyle variables (age, sex, non‐European ancestry, smoking, alcohol drinking, and body mass index). UKCTOCS was excluded from the analysis stratified by body mass index, as this was not a matching variable. Only the SABRE South Asian participants contributed to the non‐European stratum. P value for interaction threshold after Bonferroni correction=0.05/48=0.001. BMI indicates body mass index; CHD, coronary heart disease; DHA, docosahexaenoic acid; LA, linoleic acid; MUFA, monounsaturated fatty acids; OR, odds ratio; SFA, saturated fatty acids.