Primary outcome
The FFQ output generates individual nutrition scores in mg or µg per day
for each micronutrient, including calcium. We defined the EAR of 750
mg/day as the lower limit for an adequate calcium intake, since this
intake value is most relevant to detect individuals at risk for
deficiencies, while leaving a sizeable margin between the limit intake
and dangerously low intakes. (1, 7, 19) The primary outcome was set as a
dichotomous variable, with calcium intakes being either above (adequate)
or below (inadequate) the limit of 750 mg/day.