Table 2.

Results of descriptive statistics for the variables.

Category and variables			Values, mean (SD; range)		VIFa
Content-related variables
	Content readability	71.09 (27.69; −640 to 121)		2.48
	Title sentiment	0.03 (0.25; −1 to 1)		1.09
	Content sentiment	0.06 (0.26; −1 to 1)		1.14
Contributor-related variables
	Participation intensity	30.2 (61.8; 0 to 345)		1.28
	Sociability breadth	2437.4 (4753.05; 0 to 18,240)		1.04
Context-related variables
	Topic diversity	4.16 (2.20; 1 to 32)		2.74
	Topic intensity	1658 (3709.6; 0 to 57,866)		1.21
Control variables
	Title length	40.6 (18.8; 1 to 242)		3.82
	Content length	1325.6 (1091.8; 30 to 16,440)		2.64
	Work time	0.48 (0.50; 0 to 1)		1.80
Dependent variables
	Comment count	14.9 (10.9; 0 to 137)		3.10
	Favorite count	5.6 (11.8; 0 to 435)		1.41

^aVIF: variance inflation factor.