Table 4 Robustness checks by alternative...

Table 4

Robustness checks by alternative estimators

Estimators: Logistic and probit	Inverted U-shaped relationship		Moderating effect
Dv: Success	Logistic model	Probit model	Logistic model	Probit model
LogTextlen	0.284*** (0.039)	0.165*** (0.023)	0.281*** (0.040)	0.163*** (0.023)
LogVideos	0.428*** (0.073)	0.261*** (0.044)	0.432*** (0.073)	0.263*** (0.044)
LogPricerange	0.077*** (0.017)	0.048*** (0.010)	0.091*** (0.021)	0.056*** (0.013)
LogTarget	−0.362*** (0.020)	−0.214*** (0.012)	−0.365*** (0.021)	−0.216*** (0.012)
LogDuration	−0.528*** (0.045)	−0.317*** (0.026)	−0.527*** (0.045)	−0.316*** (0.026)
Experience	0.001*** (0.000)	0.001*** (0.000)	0.001*** (0.000)	0.001*** (0.000)
SocialNetwork	0.396*** (0.071)	0.240*** (0.043)	0.401*** (0.071)	0.242*** (0.043)
Locations	√	√	√	√
IDs	√	√	√	√
ProjectType	√	√	√	√
BeginMonth	√	√	√	√
EndMonth	√	√	√	√
Options	0.339** (0.063)*	0.194** (0.037)*	0.775** (0.209)*	0.432** (0.121)*
Options2	−0.018** (0.005)*	−0.010** (0.003)*	−0.044* (0.015)*	−0.024* (0.009)*
PriceDifferentiation	–	–	1.194 (0.496)*	0.662 (0.286)*
Options PriceDifferentiation*	–	–	−0.341 (0.144)*	−0.188 (0.084)*
Options2 PriceDifferentiation*	–	–	0.021 (0.010)*	0.011⁺ (0.006)
Constant	−0.410 (0.455)	−0.206 (0.271)	−1.965* (0.797)	−1.065* (0.464)
R-squared	0.1137	0.1127	0.1144	0.1133
Observations	9,179	9,179	9,179	9,179

Estimators: Logistic and probit	Inverted U-shaped relationship		Moderating effect
Dv: Success	Logistic model	Probit model	Logistic model	Probit model
LogTextlen	0.284*** (0.039)	0.165*** (0.023)	0.281*** (0.040)	0.163*** (0.023)
LogVideos	0.428*** (0.073)	0.261*** (0.044)	0.432*** (0.073)	0.263*** (0.044)
LogPricerange	0.077*** (0.017)	0.048*** (0.010)	0.091*** (0.021)	0.056*** (0.013)
LogTarget	−0.362*** (0.020)	−0.214*** (0.012)	−0.365*** (0.021)	−0.216*** (0.012)
LogDuration	−0.528*** (0.045)	−0.317*** (0.026)	−0.527*** (0.045)	−0.316*** (0.026)
Experience	0.001*** (0.000)	0.001*** (0.000)	0.001*** (0.000)	0.001*** (0.000)
SocialNetwork	0.396*** (0.071)	0.240*** (0.043)	0.401*** (0.071)	0.242*** (0.043)
Locations	√	√	√	√
IDs	√	√	√	√
ProjectType	√	√	√	√
BeginMonth	√	√	√	√
EndMonth	√	√	√	√
Options	0.339*** (0.063)	0.194*** (0.037)	0.775*** (0.209)	0.432*** (0.121)
Options2	−0.018*** (0.005)	−0.010*** (0.003)	−0.044** (0.015)	−0.024** (0.009)
PriceDifferentiation	–	–	1.194* (0.496)	0.662* (0.286)
Options* PriceDifferentiation	–	–	−0.341* (0.144)	−0.188* (0.084)
Options2* PriceDifferentiation	–	–	0.021* (0.010)	0.011⁺ (0.006)
Constant	−0.410 (0.455)	−0.206 (0.271)	−1.965* (0.797)	−1.065* (0.464)
R-squared	0.1137	0.1127	0.1144	0.1133
Observations	9,179	9,179	9,179	9,179

Note(s): + p < 0.1, *p < 0.05, **p < 0.01, ***p < 0.001

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