Mean serum total cholesterol by age, in men and women, in England (observed and predicted values).

<p>The points depict the mean total cholesterol and the vertical lines 95% confidence intervals (CI). The curves were derived from weighted local regressions and are used to enhance readability. Due to small sample sizes we aggregated participants aged 89 with those older than 89 years. To improve readability the axes are not numbered from 0.