. 2012 Sep 15;28(1):92–100. doi: 10.1093/her/cys095

Table II.

Individualized and summary knowledge items by hookah tobacco smoking outcomes

	Whole sample^a (N = 852 [%])	Current Hookah tobacco user^b (N = 852 [%])			Susceptibility to hookah tobacco use^c (n = 725^d [%])
Knowledge item		Yes^a (n = 116)	No^a (n = 736)	P-value^e	Yes^a (n = 369)	No^a (n = 356)	P-value^e

Which has more tar?				0.01			0.10
Incorrect	53	53	53		56	48
Correct	21	30	19		19	21
Don’t know	27	17	28		25	31
Which has more nicotine?				0.001			>0.001
Incorrect	64	77	62		69	54
Correct	14	14	14		14	15
Don’t know	22	9	24		18	31
Which has more carcinogens?				0.01			0.004
Incorrect	56	67	55		60	49
Correct	15	16	15		15	16
Don’t know	28	16	30		25	35
Which has more carbon monoxide?				0.01			0.14
Incorrect	35	46	34		37	31
Correct	24	26	24		25	23
Don’t know	40	29	42		38	45
Which has more heavy metals?				0.55			0.02
Incorrect	42	47	41		46	36
Correct	22	21	23		21	25
Don’t know	36	33	36		33	39
Summary score^f				0.65			0.15
0	56	51	57		57	56
1	18	17	18		16	19
2	12	16	11		14	9
3	7	9	7		7	8
4	3	4	3		2	3
5	4	4	5		4	5
Mean (SD)		1.07 (1.38)	0.95 (1.39)	0.80^g	0.93 (1.34)	1.00 (1.45)	0.27^g

^aRepresent column percentages. Percentages are based on the total for each category and may not total 100 due to rounding.

^bHaving smoked tobacco from a hookah in the last 30 days at least once.

^cAll participants who did not state that they were definitely not planning on smoking hookah tobacco in the future.

^dOnly hookah non-smokers were included in these analyses. The total n = 725 instead of 736 because 11 non-smokers had missing data for the susceptibility item.

^eFor chi-square analyses.

^fThe number of items scored correct summed.

^gDetermined using t-test.