Table 9 Results of hurdle negative binomial model for Facebook data. The estimate/coefficient (SE), exponent of coefficient (OR and IRR), z and p-values (*p < 0.05, **p < 0.01, ***p < 0.001) are shown
From: Social media engagement analysis of U.S. Federal health agencies on Facebook
| Â | Zero Portion | Count Portion | ||||||
|---|---|---|---|---|---|---|---|---|
Estimate (SE) | OR | z value | p | Estimate (SE) | IRR | z value | p | |
(Intercept) | −2.71 (0.47) | 0.067 | −5.763 | *** | −5.631 (0.169) | 0.004 | −33.356 | *** |
Log-transformed page likes | 1.102 (0.025) | 3.010 | 43.931 | *** | 1.797 (0.01) | 6.033 | 174.673 | *** |
link | −0.817 (0.462) | 0.442 | −1.77 |  | 0.554 (0.162) | 1.741 | 3.421 | *** |
music | −0.48 (0.57) | 0.619 | −0.843 |  | 0.06 (0.223) | 1.062 | 0.271 |  |
photo | −0.22 (0.464) | 0.802 | −0.475 |  | 1.833 (0.163) | 6.253 | 11.267 | *** |
question | −5.62 (0.659) | 0.004 | −8.528 | *** | −0.456 (0.54) | 0.634 | −0.844 |  |
status | −2.499 (0.462) | 0.082 | −5.408 | *** | 0.861 (0.163) | 2.365 | 5.28 | *** |
video | −0.388 (0.473) | 0.679 | −0.82 |  | 1.041 (0.165) | 2.833 | 6.302 | *** |
Positive Sentiment | 0.16 (0.023) | 1.174 | 7.051 | *** | 0.118 (0.009) | 1.126 | 12.986 | *** |
Negative Sentiment | −0.121 (0.015) | 0.886 | −7.857 | *** | −0.068 (0.006) | 0.934 | −10.692 | *** |
Activities & Behaviors | 0.644 (0.031) | 1.903 | 20.605 | *** | 0.06 (0.013) | 1.061 | 4.741 | *** |
Anatomy | 0.088 (0.051) | 1.092 | 1.743 | Â | 0.048 (0.022) | 1.049 | 2.191 | * |
Chemicals & Drugs | 0.112 (0.035) | 1.118 | 3.237 | ** | 0.07 (0.015) | 1.073 | 4.771 | *** |
Concepts & Ideas | 0.366 (0.027) | 1.441 | 13.361 | *** | −0.013 (0.012) | 0.987 | −1.041 |  |
Devices | 0.321 (0.161) | 1.378 | 1.998 | * | −0.021 (0.066) | 0.980 | −0.312 |  |
Disorders | 0.329 (0.032) | 1.390 | 10.369 | *** | −0.035 (0.014) | 0.965 | −2.514 | * |
Genes & Molecular Sequences | 0.567 (0.199) | 1.763 | 2.85 | ** | −0.084 (0.06) | 0.920 | −1.402 |  |
Geographic Areas | 0.091 (0.041) | 1.095 | 2.232 | * | −0.187 (0.017) | 0.830 | −10.776 | *** |
Living Beings | 0.242 (0.028) | 1.274 | 8.675 | *** | 0.01 (0.012) | 1.010 | 0.787 | Â |
Objects | 0.212 (0.036) | 1.236 | 5.9 | *** | −0.117 (0.015) | 0.889 | −7.769 | *** |
Occupations | 0.055 (0.05) | 1.057 | 1.108 |  | −0.232 (0.02) | 0.793 | −11.472 | *** |
Organizations | −0.35 (0.041) | 0.705 | −8.468 | *** | −0.078 (0.018) | 0.925 | −4.425 | *** |
Phenomena | 0.257 (0.041) | 1.293 | 6.25 | *** | 0.144 (0.017) | 1.155 | 8.44 | *** |
Physiology | 0.284 (0.031) | 1.328 | 9.13 | *** | 0.034 (0.013) | 1.035 | 2.614 | ** |
Procedures | 0.2 (0.036) | 1.222 | 5.597 | *** | −0.034 (0.015) | 0.966 | −2.277 | * |
Log(theta) |  |  |  |  | −0.172 (0.011) | 0.842 | −15.005 | *** |