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Table 3 Functional environment and aesthetic scale fit to the Rasch model

From: Constructing indices representing supportiveness of the physical environment for walking using the Rasch measurement model

  

Variable-trait interaction Zstd

Variable-trait interaction χ2statistic

Construct

N items

Mean

SD

df

χ2

p- value

Functional environment

      

   Initial model

18

-3.10

13.47

72

417.23

< .001

   Revised model

12

0.27

2.52

48

65.22

0.049

   Cross-validation model

12

0.36

2.65

48

53.29

0.278

Aesthetic environment

      

   Initial model

7

2.87

6.86

21

114.02

< .001

   Revised model

4

0.60

2.55

12

15.06

0.238

   Cross-validation model

4

0.74

3.42

12

18.66

0.097

  1. Zstd = standardized residual; Statistical significance considered at p < 0.01