[Study of blood calcium in a population of 3148 women. Variations with age. Correlation with other biological values]

The authors studied calcaemia and its correlations with other biochemical values in a population of 3,148 women. Calcaemia was 95.53 mg/litre +/- 3.54, a level equal to that found in 6,048 men. In 82 women (2.6 percent) the level of calcaemia was less than 90 mg/litre, and in 21 (0.66 percent) the level of calcaemia was less than 88 mg/litre. In 13 women (0.41 percent) the level of calcaemia was more than 105 mg/litre. Calcaemia in women decreased with age up to 50 years, increased again from 50 to 60 years and then fell again. There was a strong positive correlation between calcaemia and protidaemia (r = + 0.53) and a weak positive correlation between calcaemia and cholesterolaemia (r = + 0.19).