Table 1.
Comparison of calcium and vitamin D intake assessed using the FR or FFQ in all subjects (n=75), anorexia nervosa (AN) subjects (n=36) and healthy controls (n=39)
| Food Frequency Questionnaire | Food Record | P (Wilcoxon rank sum test) | |
|---|---|---|---|
| Daily intake | |||
| Calcium (mg/d) | |||
| All subjects | 1255±68 | 1185±72 | 0.35 |
| AN | 1429±101 | 1485±114 | 0.58 |
| Controls | 1095±84 | 908±63 | 0.07 |
| p (AN vs. controls) | 0.01 | 0.0001 | |
| Vitamin D (IU/d) | |||
| All subjects | 197±17 | 252±21 | 0.07 |
| AN | 246±26 | 327±33 | 0.08 |
| Controls | 151±19 | 182±19 | 0.19 |
| p (AN vs. controls) | 0.007 | 0.001 | |
| Intake per 1000 calories | |||
| Calcium (mg/d) | |||
| All subjects | 718±64 | 601±26 | 0.14 |
| AN | 819±119 | 725±38 | 0.84 |
| Controls | 623±52 | 501±24 | 0.04 |
| p (AN vs. controls) | 0.09 | <0.0001 | |
| Vitamin D (IU/d) | |||
| All subjects | 101±8 | 124±9 | 0.047 |
| AN | 117±13 | 153±14 | 0.04 |
| Controls | 86±10 | 100±10 | 0.21 |
| p (AN vs. controls) | 0.06 | 0.001 | |