Table 6.

Parameter estimates for the main model

 Before correctionWeighted PS Correction without controlsWeighted PS Correction
ParameterCoef.Std. err.Coef.Std. err.Coef.Std. err.
Constant−5.4150.100**−4.9990.025**−5.2580.100**
Online to online2.3650.025**2.3490.019**2.3250.019**
Offline to online−0.3410.023**−0.4120.016**−0.4210.016**
Online to offline−0.5660.023**−0.6430.016**−0.6510.016**
PL share0.1450.010**0.1120.013**0.1150.013**
Online to online × PL share0.1220.019**0.0610.017**0.0580.017**
Offline to online × PL share0.1340.021**0.1430.014**0.1360.014**
Online to offline × PL share0.0950.021**0.0910.014**0.0830.014**
Control variables      
Retailer FEYes No Yes 
Nearby store countYes No Yes 
Annual spending in initial periodYes No Yes 
GenderYes No Yes 
AgeYes No Yes 
Family sizeYes No Yes 
IncomeYes No Yes 
Year-quarter FEYes No Yes 
Note(s):

**p  < 0.01, *p  < 0.05; PS denotes propensity score

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