Table 1.
Demographics and substance use characteristics.
| NTP Naïve (n = 79) M/% (SD) Range |
E-Cig (n = 43) M/% (SD) Range |
Combustibles+ (n = 79) M/% (SD) Range |
p-Value | |
|---|---|---|---|---|
| Age (Yrs) | 18.96 (1.66) 16–22 |
19.42 (1.68) 17–22 |
19.94 (1.30) 18–22 |
<0.001 |
| Education (Yrs) | 12.68 (1.64) 9–16 |
13.07 (1.42) 10–16 |
13.24 (1.20) 10–15 |
0.048 |
| Mother’s Education (% Bachelor’s or above) | 47% | 53% | 49% | 0.80 |
| % Female | 57% | 58% | 30% | <0.001 |
| % Hispanic | 43% | 33% | 38% | 0.52 |
| % Caucasian | 39% | 49% | 62% | 0.06 |
| Past 6-month e-cig use (total use episodes) | - | 330.93 (716.96) 1–3585 |
1046.62 (2047.57) 1–10,244 |
<0.001 |
| Past 6-month cigarette use (total use episodes) | - | - | 79.16 (421.46) 0–3620 |
0.12 |
| Past 6 month any combustible use (total use episodes) | - | - | 90.04 (427.96) 1–362 |
0.07 |
| Age of first NTP use | 16.85 (1.86) 13–20 n = 13 |
16.65 (1.88) 9–20 |
16.66 (1.93) 12–21 |
0.94 |
| Age of first regular NTP use | 15 n = 1 |
18.60 (1.68) 15–22 n = 25 |
17.86 (1.82) 14–21 n = 56 |
0.03 |
| % No Alcohol | 32% | 0% | 0% | <0.001 |
| Past 6-month alcohol use (total use episodes) | 8.84 (14.64) 0–75 n = 54 |
19.79 (19.72) 0.5–75 n = 43 |
35.62 (30.66) 2–145 n = 79 |
<0.001 |
| % No Cannabis | 49% | 12% | 4% | <0.001 |
| Past 6-month cannabis use (total use episodes) | 43.15 (91.36) 0–474 n = 40 |
198.68 (254.47) 0–1035 n = 38 |
214.68 (439.04) 0–3557 n = 76 |
0.001 |
Notes: sample size (n) indicated for number of participants who endorsed a response when it was not endorsed by all participants with one or both groups (e.g., not all participants had used NTP regularly). Bolded p-values indicate p < 0.05.