Table 1.

Average daily intake of nutrients (24-h recall) in relation to the dietary requirement intake (DRI) for foreign students who stayed for different periods of time at King Saud University using the t test

Period of stay (months)
		<6			>6
Items intake	DRI	Mean	Difference	t test	Mean	Difference	t test
Energy content (kcal)†	2000·00	1970·30	−29·7	1·81	2359·00	359·00	15·13**
Protein (g)	65·00	98·12	33·12	20·15**	126·50	61·50	21·96**
Carbohydrates (g)	130·00	257·81	127·81	33·62**	287·80	157·80	32·27**
Dietary fibre (g)	38·00	22·93	−15·07	21·56**	27·89	−10·11	11·31*
Total fat (g)	71·50	64·78	−6·72	5·07**	81·61	10·11	5·44**
Saturated fat (g)	24·00	23·32	−0·68	1·08	26·93	2·93	3·38**
Unsaturated fat (g)	60·50	34·85	−25·65	30·89**	45·49	−15·01	12·86**
Cholesterol (mg)	300·00	530·32	230·32	9·92**	540·87	240·87	8·57**
Vitamin A (µg) (RE)	900·00	1454·84	554·84	3·57**	1423·81	523·81	3·05**
Vitamin B1 (mg)	1·20	1·09	−0·11	3·77**	1·35	0·15	4·32**
Vitamin B2 (mg)	1·30	2·45	1·15	10·78**	2·51	1·21	10·64**
Niacin (mg)	16·00	23·57	7·57	10·10**	33·00	16·99	15·22**
Vitamin B6 (mg)	1·30	1·74	0·44	4·51**	2·12	0·82	17·77**
Vitamin B12 (mg)	2·40	16·71	14·31	8·52**	17·30	14·90	8·10**
Vitamin D (μg)	15·00	8·39	−6·61	19·18**	7·58	−7·42	19·4**
Vitamin E (mg)	15·00	5·37	−9·63	44·59**	8·66	−6·34	3·7**
Folate (μg)	400·00	312·24	−87·76	5·26**	376·99	−23·02	1·62
Ca (mg)	1000·00	965·27	−34·73	1·05	917·30	−82·70	2·57*
Cu (mg)	900·00	2·51	−897·49	4641·41**	2·88	−897·12	−4474·1**
Fe (mg)	8·00	12·06	4·06	12·62**	16·10	8·1	20·34**
P (mg)	1000·00	1581·24	581·24	21·31**	1785·46	785·46	23·23**
Se (μg)	55·00	130·01	75·01	19·23**	156·15	101·15	18·69**
Zn (mg)	11	11·15	0·15	0·77	13·63	2·63	9·99**

**P ≤ 0.01; *P ≤ 0.05; Difference = mean – DRI.

^†To covert kcal to kJ multiply it by 4.184.