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. 2019 Jul 26;21(7):e14685. doi: 10.2196/14685

Table 3.

Estimation results of the impact of monetary incentives on physicians’ online prosocial behavior (N=777,110).^a

Variable	Prosocial behavior
	Ordinary least squares	Fixed effects	Self-recognition	Recognition from others	Combined model
Monetary incentive	1.498^b (0.019)	1.057^b (0.019)	0.959^b (0.022)	0.876^b (0.026)	0.842^b (0.026)
Monetary incentive × high price	—^c	—	0.275^b (0.037)	—	0.188^b (0.040)
Monetary incentive × high rated	—	—	—	0.325^b (0.034)	0.267^b (0.036)
Control variables
Letters	1.259^b (0.011)	1.167^b (0.011)	1.152^b (0.011)	1.143^b (0.011)	1.137^b (0.011)
Votes	0.345^b (0.008)	—	—	—	—
High price	0.071^b (0.023)	—	—	—	—
Title	−0.129^b (0.009)	—	—	—	—
High rated	−0.167^b (0.021)	—	—	—	—
High hospital level	−0.190^b (0.019)	—	—	—	—
Physician fixed effects	No	Yes	Yes	Yes	Yes
Month trends	Yes	Yes	Yes	Yes	Yes
Month fixed effects	Yes	Yes	Yes	Yes	Yes
R²	.413	.230	.231	.232	.232

^aRobust standard errors are in parentheses.

^bP<.01.

^cNot applicable.