Figure 2. Mean ranked coefficients of variation (CV) for citrate (Cit), chloride (Cl), potassium (K), magnesium (Mg) and phosphorus (P) in 4097 females (F) and 4014 males (M) in an approximate ‘menarche-menstrual’ (MM) period (ages 16–45) and in 1715 females and 3479 males in an approximate ‘postmenopausal’ group (PM) (ages 56–80).

Significance of differences in CV by trait and age group (MM vs. PM) indicated as P<0.05*, P<0.01**.