Skip to main content

Table 1 Baseline characteristics of sample

From: E-cigarettes and smoking cessation: a prospective study of a national sample of pregnant smokers

Characteristics E-Cigarette & Cigarette dual user (n = 36) Cigarette user (n = 392) All (n = 428)
Age, M (SD) 26.86 (4.50) 26.35 (5.91) 26.39 (5.80)
Gestational age, in weeks, M(SD) 18.28 (7.48) 18.05 (7.79) 18.07 (7.75)
Body mass index (BMI), M(SD) 26.84 (5.45) 27.81 (7.95) 27.73 (7.77)
Race/Ethnicitya
 White 30 (83.33) 239 (61.13) 269 (63.00)
 Black/African-American 4 (11.11) 100 (25.58) 104 (24.36)
 Other 2 (5.56) 52 (13.30) 54 (12.65)
Education
  < 12 grade, no high school diploma 6 (16.67) 110 (28.06) 116 (27.10)
 High school graduate, GEDb or equivalent 12 (33.33) 130 (33.16) 142 (33.18)
 Some college 16 (44.44) 115 (29.34) 131 (30.61)
 College degree 2 (5.56) 37 (9.44) 39 (9.11)
Employment status
 Working part/full-time 13 (36.11) 125 (32.13) 138 (32.47)
 Not working 23 (63.89) 264 (67.87) 287 (67.53)
Annual household income
  < $15,000 22 (62.86) 209 (54.43) 231 (55.13)
 $15,001–$30,000 8 (22.86) 121 (31.51) 129 (30.79)
  > $30,000 5 (14.29) 54 (14.06) 59 (14.08)
Marital status
 Single, never married 12 (33.33) 156 (39.90) 168 (39.34)
 Living with significant other 9 (25.00) 128 (32.74) 137 (32.08)
 Married 8 (22.22) 80 (20.46) 88 (20.61)
 Divorced/Separated/Widowed 7 (19.44) 27 (6.91) 34 (7.96)
Health insurance
 Medicaid/Medicare 31 (86.11) 312 (80.00) 343 (80.52)
 Private, veterans or other 3 (8.33) 64 (16.41) 67 (15.73)
 None 2 (5.56) 14 (3.59) 16 (3.76)
Cigarettes smoked per day, M(SD) 8.44 (7.27) 7.41 (6.23) 7.50 (6.32)
Fagerstrom test for cigarette dependence (0–10), M(SD) 3.36 (2.54) 2.80 (2.25) 2.85 (2.28)
Motivation to quit (1–7), M(SD) 5.64 (1.53) 6.08 (1.28) 6.04 (1.31)
Region
 West 1 (2.78) 27 (6.89) 28 (6.54)
 Mid-west 6 (16.67) 94 (23.98) 100 (23.36)
 Northeast 2 (5.56) 60 (15.31) 62 (14.49)
 South 27 (75.00) 211 (53.83) 238 (55.61)
Allocated to intervention arm 20 (55.56) 188 (47.96) 208 (48.60)
  1. aSignificant difference (p ≤ 0.05) was observed between control and intervention group based on fisher exact test
  2. bGED General Educational Development test
  3. Note: Data are presentated as n(%) unless otherwise noted