Table 3.

Results of negative binomial regression model (answerability).

Variables		Model 1			Model 2
		Estimate (SE)	P value	Estimate (SE)		P value
Control variables
	Work time	−0.0045 (0.0080)	.58	−0.0076 (0.0080)		.34
	Content length	1.6977 (0.0000)	<.001	1.8482 (0.0658)		<.001
	Title length	−0.4728 (0.0002)	.05	−0.3813 (0.0513)		<.001
Content variables
	Content readability	—a	—	0.1718 (0.0102)		<.001
	Title sentiment	—	—	−0.0837 (0.0169)		<.001
	|Title sentiment|	—	—	0.1070 (0.0190)		<.001
	Content sentiment	—	—	−0.2093 (0.0213)		<.001
	|Content sentiment|	—	—	0.0984 (0.0263)		<.001
Context variables
	Topic diversity	—	—	−0.2139 (0.0563)		<.001
	Topic intensity	—	—	0.2010 (0.0655)		.002
User variables
	Participation intensity	—	—	−0.0406 (0.0163)		.01
	Sociability breadth	—	—	0.3016 (0.0656)		<.001
Model fit
	AICb	203,114.15	—	202,501.86		—

^aVariable has not been input.

^bAIC: Akaike information criterion.