Table 1.

Demographic characteristics by waterpipe smoking.

	All (N = 535)		Waterpipe smokers (N = 198)		Non-waterpipe smokers (N = 337)		Pa-value
	N	%	N	%	N	%
Colleges
Dental	224	41.9	90	45.4	134	39.8	.401
Medical	212	39.6	72	36.4	140	41.5
Pharmacy	99	18.5	36	18.2	63	18.7
Year of study
First year	126	23.5	58	29.3	68	20.2	.039
Second year	124	23.2	48	24.2	76	22.5
Third year	137	25.6	40	20.2	97	28.8
Fourth year	148	27.7	52	26.3	96	28.5
Age
16–19	96	17.9	33	16.7	63	18.7	.012
20–21	207	38.7	62	31.3	145	43.1
22–24	192	35.9	83	41.9	109	32.3
25+	40	7.5	20	10.1	20	5.9
Marital status
Single	489	91.4	183	92.4	306	90.8	.517
Married	46	8.6	15	7.6	31	9.2
Housing status
With family	430	80.4	111	56.1	319	94.6	<0.00001
Alone	48	8.9	39	19.7	9	2.7
With friends	57	10.7	48	24.2	9	2.7
Incomeb
0–1500	71	13.3	25	12.6	46	13.6	.590
1501–2000	163	30.5	61	30.8	102	30.3
2001–3000	233	43.5	82	41.4	151	44.8
3000+	68	12.7	30	15.2	38	11.3

^aChi-squared analyses.

^bIncome figures are in Saudi Riyal.