Table 3.
The factor analysis performed on the Niigata PPPD Questionnaire (NPQ) scores.
| Questions of the NPQ | Factor 1 | Factor 2 | Factor 3 |
|---|---|---|---|
| Visual factor | Active-motion factor | Passive-motion/ | |
| standing factor | |||
| Q8. Watching a scroll screen on PC or smartphone | 0.900** | −0.060 | −0.034 |
| Q4. Watching TV or movies with intense movement | 0.833** | −0.003 | 0.004 |
| Q1. Quick movements such as standing up or turning your head | 0.409** | 0.299 | 0.049 |
| Q10. Reading small letters in a book or newspaper | 0.401** | 0.136 | 0.206 |
| Q2. Looking at large store displays | 0.348* | 0.227 | 0.130 |
| Q3. Walking at your natural pace | 0.030 | 0.928** | −0.201 |
| Q11. Striding at a rapid pace | −0.126 | 0.845** | 0.221 |
| Q9. Performing activities such as housework or light exercise | 0.124 | 0.551** | 0.074 |
| Q12. Riding an elevator or escalator | −0.045 | 0.066 | 0.809** |
| Q5. Riding a car, bus, or train | 0.261 | −0.216 | 0.642** |
| Q7. Standing without touching fixed objects | −0.003 | 0.137 | 0.518** |
Q6 was excluded because it showed a commonality estimate >1 and was judged to be an inappropriate variable for analysis. The single asterisk (*) indicate loadings > 0.2 and the double asterisks (**) indicate loadings > 0.4. The bigger loading is considered priorities for factor interpretation.