Table 1.
Baseline Characteristics of Eligible (n=5,732) and Enrolled (n=5,290) Study Participants.
| Eligible (not enrolled) Sample | Enrolled Sample | WEB | WEB + SN | WEB + NRT | WEB + SN + NRT | |
|---|---|---|---|---|---|---|
| N=5732 | N=5290 | N=1337 | N=1323 | N=1313 | N=1317 | |
| Sociodemographic Variables | ||||||
| Age (years), Mean (SD) | N/A | 41.8 (13.2) | 42.4 (13.3) | 41.9 (13.1) | 41.6 (13.0) | 42.4 (13.3) |
| Age (years), range | N/A | 18–82 | 18–81 | 18–80 | 18–77 | 18–82 |
| Female, n (%) | 3202 (55.9) | 3217 (60.8) | 822 (61.5) | 809 (61.1) | 788 (60.0) | 798 (60.6) |
| Race, n (%) | ||||||
| American Indian or Alaskan Native | 163 (2.8) | 114 (2.2) | 34 (2.5) | 18 (1.4) | 29 (2.2) | 33 (2.5) |
| Asian | 175 (3.1) | 82 (1.6) | 14 (1.0) | 25 (1.9) | 17 (1.3) | 26 (2.0) |
| Black or African American | 1086 (18.9) | 802 (15.2) | 216 (16.2) | 193 (14.6) | 209 (15.9) | 184 (14.0) |
| Native Hawaiian or Other Pacific Islander | 66 (1.2) | 55 (1.0) | 13 (1.0) | 14 (1.1) | 14 (1.1) | 14 (1.1) |
| White | 4242 (74.0) | 4237 (80.1) | 1060 (79.3) | 1073 (81.1) | 1044 (79.5) | 1060 (80.5) |
| Hispanic, n (%) | 436 (7.6) | 294 (5.6) | 80 (6.0) | 82 (6.2) | 61 (4.6) | 71 (5.4) |
| Education, n (%) | ||||||
| Some high school or Less | 532 (9.3) | 247 (4.7) | 66 (4.9) | 57 (4.3) | 59 (4.5) | 65 (4.9) |
| High school graduate | 1565 (27.3) | 1200 (22.7) | 319 (23.9) | 279 (21.1) | 293 (22.3) | 309 (23.5) |
| Some college or technical school | 2550 (44.5) | 2631 (49.7) | 643 (48.1) | 672 (50.8) | 658 (50.1) | 658 (50.0) |
| College graduate | 1085 (18.9) | 1212 (22.9) | 309 (23.1) | 315 (23.8) | 303 (23.1) | 285 (21.6) |
| Employed full-time, n (%) | -- | 2402 (45.4) | 597 (44.7) | 614 (46.4) | 608 (46.3) | 583 (44.3) |
| Marital Status, Has a Partner, n (%) | -- | 2735 (51.7) | 695 (52.0) | 714 (54.0) | 665 (50.6) | 661 (50.2) |
| Internet Use | ||||||
| Daily Internet use, n (%) | N/A | 4948 (93.5) | 1260 (94.2) | 1228 (92.8) | 1229 (93.6) | 1231 (93.5) |
| Daily use of Internet to communicate with others, n (%) | N/A | 2978 (56.3) | 733 (54.8) | 746 (56.4) | 742 (56.5) | 757 (57.5) |
| Smoking Variables | ||||||
| Cigarettes per day, Mean (SD) | N/A | 16.6 (8.5) | 16.5 (8.4) | 16.5 (8.3) | 16.6 (8.4) | 16.7 (8.7) |
| Smoked at least 100 cigarettes in lifetime, n (%) | N/A | 5205 (98.4) | 1316 (98.4) | 1298 (98.1) | 1294 (98.6) | 1297 (98.5) |
| Daily smoking, n (%) | N/A | 5091 (96.2) | 1294 (96.8) | 1267 (95.8) | 1261 (96.0) | 1269 (96.4) |
| Use other tobacco products (every day/some days), n (%) | N/A | 235 (4.5) | 53 (3.9) | 68 (5.2) | 64 (3.9) | 50 (3.8) |
| Want to quit, Mean (SD) | N/A | 4.6 (0.6) | 4.6 (0.6) | 4.6 (0.6) | 4.6 (0.6) | 4.6 (0.6) |
| Confidence to quit, Mean (SD) | N/A | 3.3 (1.1) | 3.4 (1.0) | 3.3 (1.1) | 3.3 (1.1) | 3.3 (1.1) |
| Readiness to Quit | ||||||
| Next 30 days, n (%) | 4712 (82.2) | 4389 (83.0) | 1110 (83.0) | 1100 (83.1) | 1091 (83.1) | 1088 (82.6) |
| Next 6 months, n (%) | 953 (16.6) | 879 (16.6) | 222 (16.6) | 218 (16.5) | 216 (16.5) | 223 (16.9) |
| Not thinking of quitting, n (%) | 67 (1.2) | 22 (0.4) | 5 (0.4) | 5 (0.4) | 6 (0.5) | 6 (0.5) |
| Quit attempts in past year, Mean (SD), range | N/A | 3.1 (11.1) | 3.6 (16.8) | 2.8 (5.9) | 3.2 (10.9) | 2.9 (7.8) |
| Number of quit methods used past year*, Mean (SD) | N/A | 1.6 (1.8) | 1.6 (1.9) | 1.6 (1.8) | 1.5 (1.8) | 1.6 (1.8) |
| Fagerström Test for Nicotine Dependence, Mean (SD) | N/A | 5.3 (2.3) | 5.2 (2.3) | 5.2 (2.2) | 5.3 (2.3) | 5.3 (2.3) |
| Health Status | ||||||
| General health (Excellent/Very Good), n (%) | N/A | 1608 (30.4) | 397 (29.7) | 434 (32.8) | 399 (30.4) | 378 (28.7) |
| Illness from smoking (yes), n (%) | N/A | 3351 (63.3) | 854 (63.9) | 836 (63.2) | 818 (62.3) | 843 (64.0) |
| Doctor advice to quit (yes), n (%) | N/A | 3283 (62.1) | 835 (62.5) | 822 (62.1) | 806 (61.4) | 820 (62.3) |
N/A: data not available;
*
Among those who reported 1 or more quit attempts in the past year, n=3810