Table 1.
Mean and median usual daily intakes of vitamins and minerals by sex in Moroccan pupils aged 15–19 years, November 2007–January 2008
| Total (n 293) | Boys (n 118) | Girls (n 175) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | sd | Median | Mean | sd | Median | Mean | sd | Median | Z | P | |
| Water-soluble vitamins | |||||||||||
| Thiamin (mg/d) | 0·9 | 0·2 | 0·9 | 0·9 | 0·1 | 0·9 | 0·9 | 0·2 | 0·8 | 3·2** | 0·002 |
| Riboflavin (mg/d) | 1·2 | 0·3 | 1·2 | 1·3 | 0·3 | 1·2 | 1·2 | 0·3 | 1·2 | 1·3NS | 0·178 |
| Niacin (NE/d) | 22·4 | 3·8 | 22·2 | 24·1 | 3·2 | 24·0 | 21·2 | 3·6 | 20·8 | 6·4*** | 0·000 |
| Pantothenic acid (mg/d) | 4·2 | 0·7 | 4·2 | 4·4 | 0·6 | 4·3 | 4·1 | 0·8 | 4·1 | 2·8** | 0·006 |
| Pyridoxine (mg/d) | 1·4 | 0·2 | 1·4 | 1·5 | 0·1 | 1·5 | 1·4 | 0·2 | 1·4 | 3·8*** | 0·000 |
| Biotin (μg/d) | 19·9 | 6·2 | 18·9 | 19·5 | 6·4 | 18·7 | 20·1 | 6·0 | 19·1 | 1·0NS | 0·277 |
| Folate (μg DFE/d) | 248·3 | 48·6 | 245·1 | 269·4 | 49·2 | 261·8 | 234·1 | 42·7 | 229·8 | 5·8*** | 0·000 |
| Vitamin B12 (μg/d) | 5·9 | 1·6 | 6·6 | 6·7 | 0·1 | 6·7 | 5·3 | 1·8 | 5·0 | 8·5*** | 0·000 |
| Ascorbic acid (mg/d) | 100·3 | 36·8 | 94·7 | 88·9 | 34·3 | 84·1 | 108·1 | 36·5 | 99·0 | 4·6*** | 0·000 |
| Fat-soluble vitamins | |||||||||||
| Vitamin A (μg RE/d) | 833·6 | 165·9 | 823·2 | 800·1 | 137·8 | 802·6 | 856·1 | 179·4 | 844·6 | 2·5* | 0·012 |
| Vitamin K (μg/d) | 134·6 | 30·8 | 132·1 | 142·4 | 32·9 | 139·3 | 129·3 | 28·2 | 125·8 | 3·4** | 0·001 |
| Trace elements and minerals | |||||||||||
| Iodine (μg/d) | 59·6 | 13·2 | 57·5 | 60·0 | 12·9 | 57·5 | 59·3 | 13·5 | 57·5 | 0·5NS | 0·613 |
| Fe (mg/d) | 15·0 | 2·9 | 14·7 | 16·5 | 2·7 | 16·5 | 14·0 | 2·5 | 13·6 | 7·4*** | 0·000 |
| Ca (mg/d) | 650·8 | 170·2 | 611·6 | 678·5 | 191·7 | 630·1 | 632·1 | 151·8 | 604·5 | 1·7NS | 0·076 |
| Mg (mg/d) | 266·9 | 47·2 | 262·4 | 284·7 | 38·4 | 283·5 | 255·0 | 48·8 | 251·1 | 5·5*** | 0·000 |
| P (mg/d) | 968·9 | 187·5 | 960·1 | 1036·8 | 164·5 | 1015·4 | 923·2 | 188·7 | 911·2 | 5·2*** | 0·000 |
| K (mg/d) | 2512·0 | 429·8 | 2497·0 | 2595·5 | 314·5 | 2582·7 | 2455·7 | 485·4 | 2354·2 | 3·4** | 0·001 |
| Na (mg/d) | 2580·0 | 586·1 | 2485·3 | 2847·7 | 578·3 | 2784·1 | 2399·4 | 519·8 | 2276·3 | 6·5*** | 0·000 |
Z, value of the Mann–Whitney U test; P, P value for Mann–Whitney U test; NE, niacin equivalents; DFE, dietary folate equivalents; RE, retinol equivalents.
*P < 0·05, **P < 0·01, ***P < 0·001.