General participant characteristics
Participant characteristics are displayed in Table 1. The mean age was
32.8 (±4.37) years, the mean BMI was 24.1 (±3.98) and the mean daily
caloric intake 2127 (±531) kCal. Most participants were of Dutch
ethnicity (n=453). 278 (40.1%) participants had calcium intakes at or
above the RDI of 1000 mg/day. Twenty-nine percent of participants
consumed less than the EAR, and 5% of participants consumed less than
500 mg/day. Participants who were excluded due to significant
underreporting of caloric intake reported an average daily caloric
intake of 1256 kCal (±339). The group of excluded participants was on
average 0.8 years younger (p=0.004), had a higher mean BMI by 2.8 points
(p<0.001) than the included participants, and had a smaller
proportion of higher educated participants (56% vs. 63%; p=0.023).