Table 4 —

The Intertemporal Relationship Between E-cigarette MLSA Law and Youth Smoking

National and State YRBSS: 2005–2015

DV: Youth is a current smoker	1	2	3	4	5	6
Exposed to E-cigarette MLSA Law While Underage	0.002	0.005	0.010	0.001	0.006	0.009
	(0.013)	(0.015)	(0.014)	(0.014)	(0.016)	(0.015)
Full Controls	✓	✓	✓	✓	✓	✓
State FEs	✓	✓	✓	✓	✓	✓
Year FEs	✓	✓	✓	✓	✓	✓
State-specific linear pre-trends		✓			✓
State-specific linear trends			✓			✓
Mean of dep. var. in the control states	0.24	0.24	0.24	0.24	0.24	0.24
Observations	93,716	93,716	93,716	93,716	93,716	93,716

Notes: Standard errors, clustered at the state level, are shown in parentheses.

All models include dummy variables for gender, race, age, and grade levels. State-level covariates listed in Table 1 are included.

The analysis sample is restricted to youth aged 18 or above.

In columns 1–3, we include Alabama, Alaska, New Jersey, and Utah, where the age limits of purchasing e-cigarettes are set at 19.

In columns 4–6, we exclude Alabama, Alaska, New Jersey, and Utah.

The definition of the key regressor, “Exposed to E-cigarette MLSA Law While Underage,” is in the text.