Competing with Free: The Impact of Movie Broadcasts on DVD Sales and Internet Piracy

The central role of the propensity score in observational studies for causal effects

Paul R. Rosenbaum, Donald B. Rubin · Biometrika · 1983 · 31K citations · Full text

Public Health, Biostatistics, Causal Inference +16

The Effect of Word of Mouth on Sales: Online Book Reviews

Judith A. Chevalier, Dina Mayzlin · Journal of Marketing Research · 2006 · 5.9K citations

Business, Marketing, Marketing Management +15

Propensity Score-Matching Methods for Nonexperimental Causal Studies

Rajeev Dehejia, Sadek Wahba · The Review of Economics and Statistics · 2002 · 4.9K citations

Public Health, Biostatistics, Causal Inference +16

The Central Role of the Propensity Score in Observational Studies for Causal Effects

Paul R. Rosenbaum, Donald B. Rubin · Biometrika · 1983 · 3.5K citations

Public Health, Biostatistics, Causal Inference +16

Frictionless Commerce? A Comparison of Internet and Conventional Retailers

Erik Brynjolfsson, Michael D. Smith · Management Science · 2000 · 2.5K citations

Business, Business Economics, Economics +17