Table 1.

Demographic distribution.

	Unweighted		Weighted
	No.	%	%
Sex
Female	639	59.1	62.3
Male	443	40.9	37.7
Total	1,082	100.0	100.0
Grade
9th	355	32.8	34.8
10th	260	24.0	25.7
11th	148	13.7	14.2
12th	319	29.5	25.3
Total	1,082	100.0	100.0
Age
13	51	4.7	5.0
14	251	23.2	23.9
15	259	23.9	25.2
16	276	25.5	24.5
17	204	18.9	17.5
18	41	3.8	3.9
Total	1,082	100.0	100.0
Nationality
Jordanian	1,017	94.0	93.3
Palestinian	18	1.7	1.7
Syrian	44	4.1	4.7
Iraqi	1	0.1	0.1
Non-Arab	2	0.2	0.2
Total	1,082	100.0	100.0
Father's job
Deceased	24	2.2	2.3
Blue collar	554	51.2	51.8
White collar	504	46.6	45.9
Total	1,082	100.0	100.0
Father currently working
No	246	22.7	22.8
Yes	836	77.3	77.2
Total	1,082	100.0	100.0
Mother's job
Deceased	2	0.2	0.1
Blue collar	32	3.0	3.5
White collar	199	18.4	18.9
Housewife	849	78.5	77.5
Total	1,082	100.0	100.0
Mother currently working
No	928	85.8	85.7
Yes	154	14.2	14.3
Total	1,082	100.0	100.0
GPA of last year
Less than 60%	21	1.9	2.3
60–69%	130	12.0	11.3
70–79%	227	21.0	20.2
80–89%	357	33.0	31.2
90% and above	347	32.1	35.0
Total	1,082	100.0	100.0
Current waterpipe smoking
No	742	68.6	70.5
Yes	340	31.4	29.5
Total	1,082	100.0	100.0
Current cigarettes smoking
No	919	84.9	85.8
Yes	163	15.1	14.2
Total	1,082	100.0	100.0
Smoking behaviour
Nonsmoker	702	64.9	66.6
Cigarettes smoker only	40	3.7	3.9
Waterpipe smoker only	217	20.1	19.2
Current dual user	123	11.4	10.2
Total	1,082	100.0	100.0
Mother or step mother smoking
No	834	77.1	77.4
Cigarettes	160	14.8	14.3
Waterpipe	49	4.5	4.5
Dual user	39	3.6	3.8
Total	1,082	100.0	100.0
Father or step father smoking
No	538	49.7	49.9
Cigarettes	401	37.1	36.4
Waterpipe	69	6.4	6.8
Dual user	74	6.8	6.9
Total	1,082	100.0	100.0
Siblings smoking
No	611	56.5	57.3
Cigarettes	227	21.0	20.0
Waterpipe	101	9.3	9.5
Dual user	143	13.2	13.2
Total	1,082	100.0	100.0
Friends smoking
No	566	52.3	56.1
Cigarettes	209	19.3	16.7
Waterpipe	131	12.1	11.4
Dual user	176	16.3	15.8
Total	1,082	100.0	100.0