Table 2.
Results of the regression analysis relating post type to comments and karma score. All associations were statistically significant (P<.001).
| Negative binomial regression | Dependent variable | Independent variable | β | Z | SD | P value |
| R for image→comment | Number of comments | Posting image | .152 | 6.41 | 0.024 | <.001 |
| R for image→score | Karma score | Posting image | .618 | 12.35 | 0.050 | <.001 |
| R for face→comment | Number of comments | Posting face image | .451 | 10.21 | 0.044 | <.001 |
| R for face→score | Karma score | Posting face image | .760 | 9.64 | 0.079 | <.001 |