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Table 1 Estimated effects of chocolate scent on bookstore sales

From: Chocolate scents and product sales: a randomized controlled trial in a Canadian bookstore and café

Outcome Unadjusted estimates Adjusted for time trends
Total sales
Control mean 575.4 (SE = 34.7) 593.5 (SE = 30.4)
Treatment effect 36.6 (SE = 51.6) 2.7 (SE = 41.7)
Bulk sales
Control mean 72.0 (SE = 13.4) 71.2 (SE = 16.4)
Treatment effect 21.8 (SE = 17.5) 23.2 (SE = 21.2)
Café sales
Control mean 334.7 (SE = 15.2) 336.5 (SE = 12.6)
Treatment effect −5.5 (SE = 21.1) −8.9 (SE = 16.2)
Book sales
Control mean 168.7 (SE = 22.5) 185.7 (SE = 22.9)
Treatment effect 20.4 (SE = 32.0) −11.6 (SE = 32.5)
  1. Estimates of control means and average treatment effects of chocolate scent on total sales, bulk coffee bean/loose tea/spice sales, café sales, and book sales in Canadian dollars. All estimates computed using ordinary least squares regression with robust standard errors. Unadjusted estimates computed without covariates. Adjusted estimates computed using a linear control for the day of experiment and fixed effects for the day of week, all mean-centered