| Items | Component | |||
| SMEGROTH (F1) | HCAPS (F2) | HOCOST (F3) | POEXP (F4) | |
| Chrombach’s alpha | 0.969 | 0.962 | 0.960 | 0.931 |
| Q1 | 0.888 | |||
| Q2 | 0.859 | |||
| Q3 | 0.816 | |||
| Q4 | 0.907 | |||
| Q5 | 0.944 | |||
| Q6 | 0.908 | |||
| Q7 | 0.911 | |||
| Q8 | 0.931 | |||
| Q9 | 0.952 | |||
| Q10 | 0.934 | |||
| Q11 | 0.914 | |||
| Q12 | 0.931 | |||
| Q13 | 0.924 | |||
| Q14 | 0.942 | |||
| Q15 | 0.943 | |||
| Q16 | 0.902 | |||
| Q17 | 0.884 | |||
| Q18 | 0.977 | |||
| Q19 | 0.969 | |||
| Q20 | 0.944 | |||
| Q21 | 0.902 | |||