|
| | Questionnaire items | Factor loading |
| 1 | 2 | 3 |
|
| SDFI-D | (1) I usually tend to digest well compared to others. | −0.724 | 0.302 | 0.200 |
| (2) I often suffered from digestion problems since I was young. | 0.700 | −0.029 | −0.157 |
| (3) I tend to easily get an upset stomach. | 0.748 | −0.032 | −0.074 |
| (4) After consuming milk, food made of flour, cold food, or greasy food, I tend to feel uncomfortable. I cannot digest well and my stomach gets filled with gas quickly. | 0.737 | 0.036 | −0.022 |
| (5) I cannot digest well when I am in a sensitive mood. | 0.776 | 0.028 | 0.007 |
| (6) I cannot digest well when my body is in bad condition. | 0.785 | −0.009 | −0.034 |
| (7) I have frequently experienced pressure or bloat in upper abdomen. | 0.757 | −0.046 | 0.210 |
| (8) I have frequently experienced discomfort or burn in upper abdomen. | 0.697 | −0.058 | 0.202 |
| (9) I often feel bloated or full without eating much. | 0.664 | −0.112 | 0.271 |
| (10) I tend to get full quickly after eating a little. | 0.561 | −0.215 | −0.132 |
|
| SDFI-A | (1) I wait feeling hungry around the meal time. | 0.033 | 0.781 | 0.087 |
| (2) I enjoy the meal during the meal. | 0.028 | 0.812 | 0.166 |
| (3) I feel pleasant after eating a meal. | −0.285 | 0.652 | 0.188 |
| (4) I like food and enjoy eating. | 0.016 | 0.727 | 0.390 |
| (5) I like to try even new food that I had never tried or seen before. | −0.191 | 0.596 | 0.266 |
| (6) I usually eat regularly at certain time of the day. | −0.094 | 0.553 | −0.207 |
|
| SDFI-E | (1) I eat more than usual when I am under stress or when I’m in a bad mood. | 0.153 | 0.233 | 0.547 |
| (2) I tend to eat more portion than others usually. | −0.151 | 0.199 | 0.799 |
| (3) I eat until I feel full when I’m having a meal. | 0.082 | 0.326 | 0.751 |
| (4) I tend to overeat or binge more than 3 times a week. | 0.157 | 0.082 | 0.832 |
| (5) I tend to finish a meal in less than 10 minutes. | −0.281 | −0.116 | 0.534 |
|
