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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Tob Control. 2016 Jan 25;26(1):34–39. doi: 10.1136/tobaccocontrol-2015-052705

Table 2.

Results (cell n and row %) for cross-tabulation of e-cigarette (e-cig) and cigarette (cig) usage categories at two time points

Time 2 status
Time 1
status		 Non-user
(%)		 E-cig
only (%)		 Cig
only
(%)		 Dual-user
(%)		 Marginal
n/(%)
Non-user 784
(85)		 92
(10)		 15
(2)		 35
(4)		 926 (71)
E-cig only 22
(10)		 151
(70)		 1
(<1)		 41
(19)		 215 (17)
Cig only 5
(17)		 1
(3)		 14
(48)		 9
(31)		 29 (2)
Dual-user 9
(7)		 6
(5)		 7
(5)		 110
(83)		 132 (10)
Marginal n
(Marginal
%)		 820
(63)		 250
(19)		 37
(3)		 195
(15)		 1302

Status categories based on ever use of e-cigarettes and/or tobacco cigarettes.