Table 1.
Top 10 most frequent words for each topic.
| Rank | Topic 1: product (details about e-cigarettes) | Topic 2: method (methods of e-cigarette consumption) | Topic 3: others (related discussions) | |||
| Words | Frequency (x 10–2) | Words | Frequency (x 10–2) | Words | Frequency | |
| 1 | new | 1.76 | vape | 1.80 | tobacco | .77 |
| 2 | now | 1.26 | get | 1.69 | Smoking | .73 |
| 3 | flavor | .88 | vapor | 1.22 | know | .06 |
| 4 | stock | .84 | free | 1.17 | smoke | .53 |
| 5 | mod | .83 | hookah | .89 | thank | .52 |
| 6 | available | .77 | juice | .85 | like | .52 |
| 7 | flavors | .66 | like | .79 | want | .50 |
| 8 | 2 (oz.) | .61 | vaping | .79 | time | .50 |
| 9 | 1 (oz.) | .58 | everyone | .78 | help | .40 |
| 10 | battery | .48 | happy | .75 | vaping | .40 |