Table 2.

Descriptive statistics for the major independent and dependent variables (n = 4,450)

	MI (10 imputations)		Listwise Deletion		% missing
	%	SE	%	SE
Independent Variables of Interest (Past Year)
Participates in Competitive Sports
Does not participate in sport (ref.)	35.3%	0.009	34.9%	0.010	12.8%
Participates in at least one sport	64.7%	0.009	65.1%	0.010
Number of Different Sports
Participates in one sport	30.8%	0.009	30.6%	0.010	12.8%
Participates in two sports	17.7%	0.007	17.9%	0.008
Participates in three + sports	15.9%	0.007	16.5%	0.008
Different Types of Sports
Baseball/Softball	11.7%	0.006	11.8%	0.007	12.8%
Basketball	17.4%	0.007	17.0%	0.008
Cheerleading	4.8%	0.004	5.0%	0.005
Cross Country	4.7%	0.004	4.6%	0.004
Football	12.9%	0.006	12.5%	0.007
Golf	4.9%	0.004	5.0%	0.005
Lacrosse	2.6%	0.003	2.5%	0.003
Soccer	11.9%	0.006	11.5%	0.006
Swimming and Diving	5.7%	0.004	6.0%	0.005
Tennis	5.5%	0.004	5.5%	0.004
Track and Field	11.4%	0.006	12.1%	0.007
Volleyball	8.0%	0.005	8.6%	0.006
Wrestling	3.8%	0.003	3.3%	0.004
Other Sport	23.1%	0.008	23.6%	0.008
Dependent Variables (Past 30 Days)
Cigarette Smoking	12.1%	0.006	11.2%	0.007	3.6%
E-Cigarette Use	18.0%	0.007	17.8%	0.008	11.1%
Dual Cigarette and E-Cigarette Use	7.2%	0.005	6.8%	0.005	13.0%
Cigarette Smoking Only	4.7%	0.004	4.4%	0.004	13.0%
E-Cigarette Use Only	10.8%	0.006	11.0%	0.007	13.0%
E-Cigarette Use Only (without a history of lifetime cigarette smoking)	4.9%	0.004	4.7%	0.004	13.0%
E-Cigarette Use Only (previous history of lifetime cigarette smoking)	6.2%	0.005	6.2%	0.005	13.0%

% = percent; SE = standard error; MI = multiple imputation; ref. = reference group in logistic regression models.