Table 1.

Frequencies and Weighted Percents for Covariates and Latent Class Indicators

Variable	Unweighted frequency	Weighted percent
Gender
Male	1408	50.3
Female	1521	49.7
Grade
9th	693	33.1
10th	720	26.5
11th	733	21.7
12th	780	18.7
Ever tried cigarettes (1 or 2 puffs)
No	1347	49.7
Yes	1449	50.3
Age at initiation
Never smoked a whole cigarette	1903	69.2
8 or 10 years old	169	6.7
11 or 12 years old	157	5.8
13 or 14 years old	274	9.9
15, 16, or 17 or years older	288	8.4
How many days did you smoke cigarettes,  during the past 30 days?
0 days	2438	88.4
1 or 2 days	105	3.5
3 to 19 days	119	4.2
20 to all 30 days	109	3.9
During the days that you smoked,  how many cigarettes did you  smoke per day (during the past 30 days)?
Did not smoke cigarettes during the past 30 days	2392	88.4
Less than 1–1 per day	147	4.9
2–5 cigarettes/day	132	4.9
6 to more than 20 cigarettes/day	45	1.8
Ever smoked daily? (Consecutively for at least 30 days)
No	2584	93.8
Yes	180	6.2
Ever felt sad/hopeless
No	1995	70.8
Yes	875	29.2
Thought about ending own life
No	2500	86.8
Yes	380	13.2
Made plans to end own life
No	2582	90.5
Yes	286	9.5
Attempts to end own life
0 times	2228	92.3
1 times	99	4.1
2 or more times	91	3.6