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Table 4 Interactions of treatment status with income levels

From: Influence of social status, physical activity, and socio-demographics on willingness to pay for a basket of organic foods

Variable

Estimate

Health treatment high status Day 2

 − 1.295**

 

(0.501)

Health treatment low status Day 2

 − 1.427***

 

(0.526)

Income treatment high status Day 2

 − 0.229

 

(0.486)

Income treatment low status Day 2

 − 0.263

 

(0.506)

Combined treatment high status Day 2

 − 0.960*

 

(0.497)

Combined treatment low status Day 2

 − 0.891*

 

(0.840)

Health treatment high status Day 3

 − 1.267**

 

(0.503)

Health treatment low status Day 3

 − 1.130**

 

(0.482)

Income treatment high status Day 3

 − 0.030

 

(0.531)

Income treatment low status Day 3

0.362

 

(0.492)

Combined treatment high status Day 3

 − 0.703

 

(0.523)

Combined treatment low status Day 3

0.109

 

(0.519)

Health treatment Day 2 * Income greater than $60,000

0.874

 

(0.575)

Income treatment Day 2 * Income greater than $60,000

 − 0.984*

 

(0.575)

Combined treatment Day 2 * Income greater than $60,000

1.048*

 

(0.556)

Health treatment Day 3 * Income greater than $60,000

0.116

 

(0.521)

Income treatment Day 3 * Income greater than $60,000

0.017

 

(0.590)

Combined treatment Day 3 * Income greater than $60,000

 − 0.667

 

(0.963)

Intercept

5.887

 

(0.453)

Session random effects parameter

0.103

 

(0.129)

Estimated variance parameter

6.593

 

(0.402)

Log likelihood

 − 1335.717

N

564

  1. Each coefficient is the willingness to pay estimate for that attribute
  2. Numbers in parentheses are standard errors
  3. ***, **, *Statistical significance at the 1%, 5%, and 10% levels, respectively