Table 4 Mental-Emotional Domain (5 items) - Overview of final SF-HDQ item level and domain model fit statistics

24

Feel anxious

0.128

0.044

0.385

11.297

0.256

25

Feel sad, down, or depressed

0.092

0.044

− 1.798

20.480

0.015

26

Afraid for my future

− 0.232

0.041

0.088

5.906

0.749

27

Lack confidence around others

0.216

0.042

0.610

9.372

0.404

32

Feel lonely

− 0.203

0.04

1.256

6.858

0.652

Final model: mental-emotional domain—5 items (raw score range: 0–20)

 Mean

-0.694

 Standard deviation

1.335

 Sample size

903

 Chi-square statistic (df) p value

53.9124 (df: 45) p = 0.170297^a

 Cronbach’s alpha

0.84935

 Person Separation Index

0.79154

 Unidimensionality t-test (% significant)

1.14%

 Differential Item Functioning (DIF)

None