Table 1 Baseline characteristics of analytic sample, PATH Study (Wave 1, 2013-14)

Time-varying cigarette and cigar use

 Non-established cigarette and cigar use

1334 (60.5)

58.1–62.8

 Former cigarette or cigar use

481 (20.7)

18.6–23.0

 Exclusive cigarette use

926 (16.5)

15.2–17.9

 Exclusive cigar use

56 (1.0)

0.7–1.3

 Dual use

86 (1.3)

1.1–1.7

Sociodemographic risk factors

Age (mean (SD))

44.4 (17.4)

Sex

 Female

1730 (61.7)

59.3–64.1

 Male

1153 (38.3)

35.9–40.7

Race/Ethnicity

 Hispanic

461 (13.5)

11.9–15.3

 NH White

1736 (67.7)

65.3–70.0

 NH Black

441 (12.2)

10.9–13.6

 Another NH race and ethnicity

245 (6.6)

5.4–8.1

Annual household income

 $50,000 or more

922 (40.6)

38.1–43.2

 Less than $50,000

1961 (59.4)

56.8–61.9

Health insurance status

 Covered

2451 (90.0)

88.6–91.2

 Not covered

432 (10.0)

8.8–11.4

History of tobacco use

Time-varying ENDS use

 Non-established ENDS use

2653 (96.1)

95.5–96.7

 Former ENDS use

92 (1.5)

1.2–1.8

 Current ENDS use

138 (2.4)

1.9–2.9

Baseline cigarette pack-years (mean (SD))

6.5 (15.1)

Other risk factors

Time-varying secondhand smoking exposure - mean number of hours in past 7 days (mean (SD))

7.3 (21.6)

Obesity (BMI ≥ 30.0) at baseline

 Yes

1120 (41.7)

39.0–44.4

 No

1763 (58.3)

55.6–61.0

Asthma exacerbation at baseline

 Yes

407 (15.4)

13.5–17.6

 No

2476 (84.6)

82.4–86.5