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Table 11 Backward stepwise removal of items violating IIO

From: Mokken scale analysis of mental health and well-being questionnaire item responses: a non-parametric IRT method in empirical research for applied health researchers

Label

Step 1

Step 2

Step 3

Step 4

Step 5

Optimistic

2

2

1

0

0

Useful

3

2

1

1

0

Relaxed

2

2

1

0

0

Interested in others

8

NA

NA

NA

NA

Spare energy

0

0

0

0

0

Deal with problems

2

1

1

1

0

Think clearly

1

0

0

0

0

Feel good

3

2

2

NA

NA

Feel close

1

0

0

0

0

Confident

4

3

NA

NA

NA

Can decide

0

0

0

0

0

Feel loved

0

0

0

0

0

Interested

1

0

0

0

0

Cheerful

3

2

2

2

NA

  1. H T = 0.31.