Table 2.
Univariate Differences between training sample and validation sample
| Training | Validation | P value | |
|---|---|---|---|
| (n = 1584) | (n = 792) | ||
| Demographics | |||
| Male | 657 (27.7%) | 337 (14.2%) | 0.617 |
| Age (±SD) | 42.94 ± 12.39 | 43.03 ± 12.5 | 0.880 |
| Race | 0.997 | ||
| African American | 530 (22.3%) | 264 (11.1%) | |
| Latino | 524 (22.1%) | 262 (11.0%) | |
| White | 530 (22.3%) | 266 (11.2%) | |
| Education, % college graduate or higher | 550 (23.1%) | 288 (12.1%) | 0.430 |
| Income, % < $1800/month | 614 (25.8%) | 329 (13.8%) | 0.192 |
| Tobacco Characteristics | |||
| Smoking status (%) | 0.263 | ||
| Nondaily | 799 (33.6%) | 402 (16.9%) | |
| Daily light (1–10 cpd) | 373 (15.7%) | 205 (8.6%) | |
| Daily heavy (11+ cpd) | 412 (17.3 ) | 185 (7.8%) | |
| Menthol smoker | 899 (37.8%) | 461 (19.4%) | 0.500 |
| Cigarettes per day, mean (±SD) | 10.03 ± 9.03 | 9.06 ± 7.69 | 0.009 |
| Time to first cigarette, % within 30 minutes of waking | 900 (37.9%) | 449 (18.9%) | 0.953 |
| 24 hour quit attempts in last 12 months, mean (±SD) | 5.54 ± 9.87 | 6.00 ± 11.93 | 0.454 |
| Cost | |||
| Price of cigs influenced them to smoke less, % yes | 920 (38.7%) | 450 (18.9%) | 0.557 |
| Price of cigs influenced where they buy cigs, % yes | 1100 (46.3%) | 566 (23.8%) | 0.311 |
| Price of cigs influenced the brand they buy, % yes | 685 (28.8%) | 360 (15.2%) | 0.306 |
| Buy versus borrow cigs, % buy all cigs they smoke | 1004 (42.3%) | 503 (21.2%) | 0.952 |
| Harm Reduction | |||
| Trying to cut down on cigs smoke, % yes | 1119 (47.1%) | 561 (23.6%) | 0.924 |
| Limit cpd to decrease health risk, % yes | 730 (30.7%) | 371 (15.6%) | 0.727 |
| Limit smoking in last year to decrease health risks, % always or often | 476 (20.0%) | 240 (10.1%) | 0.899 |
| Psychosocial | |||
| Depression score, mean (±SD)a | 1.99 ± 1.86 | 1.96 ± 1.82 | 0.683 |
| Alcohol score, mean (±SD)b | 4.02 ± 3.16 | 3.93 ± 3.03 | 0.494 |
| Discrimination score, mean (±SD)c | 7.03 ± 6.30 | 7.23 ± 6.44 | 0.460 |
aScores range from 0–6 with scores of 3 or higher indicating possible depressive symptoms.
bScores range from 0–12 with scores of ≥4 for men and ≥3 for women indicating possible alcohol misuse.
cScores range from 0–25 with higher scores indicating greater frequency of discrimination in daily life.