Table 1.
Demographics and characteristics of initial contacts (PS) and subsequent subgroups of those eligible after the PS for participation in the SV, actually participated in SV, and ultimately recruited (randomized).
| Variable | Phone screen (N = 3,093) | Eligible after phone screen (N = 1,588) | Screening visit (N = 534) | Randomized (N = 330) | p-value |
|---|---|---|---|---|---|
| Age mean (std) | 29.5 (6.9) | 28.4 (4.6) | 29.46 (4.32) | 29.70 (4.18) | 0.623a |
| Gender N (%) | |||||
| Male | 1212 (47.34) | 776 (49.40) | 277 (51.87) | 169 (51.21) | 0.132a |
| Female | 1348 (52.66) | 795 (50.60) | 257 (48.13) | 161 (48.79) | |
| Ethnicity N (%) | |||||
| Hispanic or Latino | 64 (2.51) | 45 (2.87) | 15 (2.84) | 11 (3.33) | 0.308a |
| Not Hispanic or Latino | 2482 (97.49) | 1525 (97.13) | 514 (97.16) | 319 (96.67) | |
| Race (grouped) N (%) | |||||
| Black or African American (only selection) | 1525 (59.80) | 868 (55.39) | 229 (42.88) | 123 (37.27) | <0.001a |
| White (only selection) | 946 (37.10) | 642 (40.97) | 275 (51.5) | 189 (57.27) | |
| Other (incl. multiple) | 79 (3.10) | 57 (3.64) | 30 (5.62) | 18 (5.45) | |
| Education N (%) | |||||
| At most high school graduate of GED | 172 (36.83) | 108 (32.73) | 0.004b | ||
| At least some vocational of training school after high school | 295 (63.17) | 222 (67.27) | |||
| Personal income (annual) | |||||
| < $16,000 | 217 (46.47) | 144 (43.64) | 0.001b | ||
| $16,000 – $49,999 | 185 (39.61) | 142 (43.03) | |||
| >= $50,000 | 37 (7.92) | 31 (9.39) | |||
| Don't know | 28 (6.00) | 13 (3.94) | |||
| Marital Status N (%) | |||||
| Single or casually dating | 194 (41.45) | 124 (37.69) | 0.021b | ||
| Married or other committed relationship | 248 (52.99) | 188 (57.14) | |||
| Separated, divorced, or widowed | 26 (5.56) | 17 (5.17) | |||
| Smoking data mean (std) | |||||
| Cigarettes smoked per day | 18.4 (12.0) | 19.0 (8.5) | 18.93 (8.15) | 18.23 (6.79) | 0.808a |
| BMI N (%) | |||||
| Underweight (<18.5) | 25 (0.96) | 6 (0.38)c | 2 (0.37) | 0 (0.00) | <0.001a,e |
| Normal (18.5–24.9) | 817 (31.27) | 487 (30.67) | 131 (24.53) | 76 (23.03) | |
| Overweight (25.0–29.9) | 814 (31.15) | 532 (33.50) | 188 (35.21) | 124 (37.58) | |
| Obese (>30) | 957 (36.62)d | 563 (35.45) | 213 (39.89) | 130 (39.39) | |
Note: Education, income, and marital status was not collected at PS but first during SV. Because screening was terminated as soon as the first ineligibility reason was encountered, most variables have missing data (n missing not shown in table).
Comparing randomized group vs. all others in PS group.
Comparing randomized group vs. all others attending SV.
Self-reported underweight did not automatically preclude individuals from attending the onsite SV: of these 6 individuals 4 never scheduled a SV and the remaining 2 attended the SV but were not enrolled/randomized.
Of these n = 174 (18%) were Obese > 40.
When restricting comparison to those with eligible BMI (20–40) in PS group the p-value is <0.001.