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Table 2 The mean scores of the measures and correlations among them

From: Subjective socioeconomic status and cigarette smoking interact to delay discounting

Measure

M

SD

1

2

3

4

1. Subjective SES

4.59

1.85

–

   

2. Objective SES

2.07

1.31

0.26**

–

  

3. Smoking status

0.80

0.40

0.15*

−0.13+

–

 

4. Discount rate

0.20

0.22

−0.14*

0.06

−0.13+

–

  1. The ratings of objective SES (yearly income) were based on 8 categories. 1 <2,000,000 yen, 2 2,000,000–3,999,999 yen, 3 4,000,000–5,999,999 yen, 4 6,000,000–7,999,999 yen, 5 8,000,000–9,999,999 yen, 6 10,000,000–11,999,999 yen, 7 12,000,000–13,999,999 yen, 8 ≥ 14,000,000 yen. Regarding smoking status, 0 smoker, 1 non-smoker
  2. ** p < .01, * p < .05, + p < .10
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