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Table 1 Coefficients. Non-linear and linear effects

From: More is not always better—non-linear effects in crowdfunding

Term

b-spline (cubic)

tp-spline (low rank isotropic)

Linear regression

Intercept

1.28***

1.57***

1.42***

Goallog (control)

− .12***

− .12***

− .12***

Backers (control)

.00***

.00***

.00***

Year (control)

Yes

Yes

Yes

Month (control)

Yes

Yes

Yes

Category (control)

Yes

Yes

Yes

Duration (control)

− .00***

− .00***

− .00***

Updates1

.26***

664.34***

.05***

Comments1

.20***

632.29***

.01***

Rewards1

.07***

80.84***

.01***

Facebook friends1

.02***

30.59***

.00***

Facebook shares1

.11***

155.77***

.00***

Twitter tweets1

.09***

35.79***

.00***

  1. 1 Coefficients are cubic estimates for b-spline model, approximate F-values for tp-spline model and (unstandardized) regression weights for linear model. *** p  < .001
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