Social media engagement analysis of U.S. Federal health agencies on Facebook

Table 10 Results of Cox proportional hazards model for interval between a Facebook post and its last activity. The Coefficient (SE), hazard ratio (HR), z and p-values (p < 0.05, p < 0.01, p < 0.001) for various independent variables are shown

	Interval between Facebook Post & Last Activity
	Coefficient (SE)	HR	z	p
Log-transformed page likes	−0.424 (0.008)	0.654	−54.583	***
Link	−0.142 (0.128)	0.868	−1.103
Music	−0.211 (0.172)	0.810	−1.228
Photo	−0.435 (0.129)	0.647	−3.377	***
Question	0.221 (0.173)	1.248	1.28
Status	−0.105 (0.129)	0.900	−0.816
Video	−0.291 (0.131)	0.748	−2.214	*
Positive Sentiment	−0.022 (0.007)	0.979	−2.989	**
Negative Sentiment	0.007 (0.005)	1.007	1.437
Activities & Behaviors	−0.03 (0.01)	0.971	−2.925	**
Anatomy	−0.004 (0.017)	0.996	−0.207
Chemicals & Drugs	−0.011 (0.012)	0.989	−0.935
Concepts & Ideas	−0.023 (0.01)	0.977	−2.376	*
Devices	0.137 (0.053)	1.147	2.593	**
Disorders	0.012 (0.011)	1.012	1.101
Genes & Molecular Sequences	−0.146 (0.051)	0.864	−2.876	**
Geographic Areas	−0.004 (0.014)	0.996	−0.295
Living Beings	0 (0.01)	1.000	0.02
Objects	0.02 (0.012)	1.020	1.66	.
Occupations	0.042 (0.016)	1.043	2.578	**
Organizations	0.054 (0.014)	1.056	3.846	***
Phenomena	−0.068 (0.014)	0.935	−4.988	***
Physiology	−0.005 (0.011)	0.995	−0.434
Procedures	−0.028 (0.012)	0.973	−2.296	*

ISSN: 1472-6947