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Table 4 The results of measurement variable selection with the methods of CTT and IRT

From: Construction and validation of a revised satisfaction index model for the Chinese urban and rural resident-based basic medical insurance scheme

Variables

CTT

IRT

Selected

Floor effect

Ceiling effect

t-test

Item-dimension Correlation

Item-total Correlation

Cronbach’s α coefficient

Stepwise regression

Factor analysis

a

b

\(\overline{I}\)

PE1

           

0

PE2

 

 × 

         

1

PE3

           

0

PQ1

 

 × 

        

 × 

2

PQ2

          

 × 

1

PQ3

           

0

PQ4

           

0

PQ5

           

0

PQ6

           

0

PQ7

           

0

PQ8

           

0

PQ9

         

 × 

 

1

PQ10

         

 × 

 

1

PQ11

         

 × 

 

1

PQ12

         

 × 

 

1

PQ13

           

0

PQ14

 

 × 

         

1

PQ15

           

0

PQ16

         

 × 

 

1

PQ17

           

0

PV1

         

 × 

 

1

PV2

         

 × 

 

1

PS1

         

 × 

 

1

PS2

         

 × 

 

1

PS3

     

 × 

     

1

PC1

–

–

      

 × 

 

 × 

2

PC2

–

–

        

 × 

1

PT1

 

 × 

         

1

PT2

 

 × 

         

1

  1.  × Suggested deletion, CTT classic test theory, IRT item response theory, PE public expectations, PQ perceived quality, PV perceived value, PS public satisfaction, PC public complaints, PT public trust
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BMC Medical Informatics and Decision Making

ISSN: 1472-6947

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