TABLE 2.
Cross-classification of the sample into quartiles by the mean daily calcium intake assessed by the first FFQ and the 6-day DRa
| Quartiles of calcium intake | 6-days DRc | |||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | Total | ||
| FFQb | 1 | 12 | 7 | 2 | 2 | 23 |
| 2 | 8 | 5 | 8 | 3 | 24 | |
| 3 | 2 | 7 | 7 | 7 | 23 | |
| 4 | 1 | 5 | 6 | 11 | 23 | |
| Total | 23 | 24 | 23 | 23 | 93 | |
a
Data is shown in number of subject classified into the respective quartiles;
b
FTQ quartiles were Q1: <511.66 mg/d; Q2: 511.67–776.18 mg/d; Q3: 776.19–1163.50 mg/d and Q4: >1,163.50 mg/d;
c
DR quartiles were Q1: <564.54 mg/d; Q2: 564.55– 779.92 mg/d; Q3: 779.93– 1,053.20 and Q4: >1,053.21 mg/d.