TABLE 1

Demographic Characteristics of Subjects at Baseline

CHS (CA)H&H Study (CA)YASS (CT)
N = 1553N = 3190N = 1404
Sex
 Male752 (48.4)1467 (46.0)637 (45.4)
 Female801 (51.6)1723 (54.0)767 (54.6)
Race/Ethnicity
 Non-Hispanic white592 (38.1)512 (16.0)1198 (85.3)
 Hispanic white758 (48.8)1505 (47.2)66 (4.7)
 Other203 (13.1)1173 (36.8)140 (10.0)
Baseline grade
 Ninth3190 (100.0)417 (29.7)
 10th21 (1.3)363 (25.9)
 11th866 (55.8)340 (24.2)
 12th666 (42.9)283 (20.2)
Baseline e-cigarette use
 No1197 (77.3)2211 (70.8)1078 (76.9)
 Yes351 (22.7)911 (29.2)323 (23.1)
Baseline cigarette use
 No1293 (83.5)2660 (85.2)1212 (86.3)
 Yes255 (16.5)463 (14.8)192 (13.7)
  • Data are presented as n (%). Totals may vary because of missing data. CA, California; CT, Connecticut; —, no participants.