Table 2.
Factor loadings for factor analysis with oblique rotation
| Factor | ||||||
|---|---|---|---|---|---|---|
| Item | Question text | 1 | 2 | 3 | 4 | 5 |
| I-1 | Do your toes begin to hurt when the ambient temperature or your body temperature rises? | 0.799 | − 0.125 | − 0.004 | − 0.047 | 0.052 |
| I-6 | Are you unable to perform your daily activities due to pain? | 0.766 | 0.036 | 0.073 | − 0.128 | 0.030 |
| I-4 | Do you feel pain in your knees when the ambient temperature or your body temperature rises? | 0.729 | − 0.059 | − 0.135 | − 0.190 | 0.290 |
| I-7 | Do your hands begin to hurt on cold days? | 0.664 | − 0.027 | 0.027 | 0.344 | − 0.160 |
| I-13 | Do you experience any pain when your body temperature rises in the bath? | 0.658 | − 0.026 | 0.054 | − 0.029 | 0.096 |
| I-12 | Are you immobile on hot days? | 0.646 | 0.191 | − 0.031 | 0.101 | 0.014 |
| I-22 | Do you have diarrhea? | 0.585 | 0.192 | 0.010 | 0.028 | − 0.194 |
| I-9 | Do your hands begin to hurt while using tap water? | 0.448 | − 0.018 | 0.052 | 0.376 | − 0.056 |
| I-24 | Do you experience abdominal pain? | 0.405 | 0.059 | 0.149 | 0.359 | − 0.179 |
| I-25 | Do you feel nauseous? | 0.396 | 0.006 | 0.197 | 0.270 | 0.029 |
| V-8 | Do you feel bitter because of prejudice toward Fabry disease at your workplace or school? | − 0.129 | 0.807 | 0.199 | 0.032 | − 0.099 |
| V-9 | Do people at your workplace or school ever make snide remarks about your Fabry disease symptoms? | − 0.134 | 0.780 | 0.194 | 0.054 | − 0.062 |
| V-2 | Does your Fabry disease treatment impact your work or schooling? | 0.013 | 0.753 | − 0.063 | 0.015 | 0.050 |
| V-4 | Do you feel that your hearing difficulty affects work or schooling? | 0.079 | 0.729 | − 0.126 | 0.195 | − 0.057 |
| V-3 | Do you feel that working outside is difficult? | 0.354 | 0.698 | − 0.033 | − 0.180 | 0.034 |
| V-7 | Do you get scolded by those around you because you become irritable due to pain from Fabry disease? | 0.119 | 0.574 | 0.133 | − 0.097 | − 0.053 |
| IV-5 | Do you feel hurt because the people around you do n’t understand you? | − 0.092 | − 0.011 | 0.741 | 0.143 | 0.065 |
| IV-6 | Do you feel that you can’t properly explain Fabry disease symptoms to the people around you? | − 0.007 | 0.082 | 0.635 | 0.102 | − 0.040 |
| III-1 | Do you worry about your Fabry disease? | 0.218 | 0.086 | 0.603 | − 0.314 | − 0.043 |
| IV-2 | Do you feel that playing or doing activities with friends is difficult because of the Fabry disease? | 0.281 | − 0.046 | 0.517 | 0.096 | 0.049 |
| III-4 | Do you feel anxious about your future because of the Fabry disease? | 0.445 | − 0.031 | 0.462 | − 0.329 | 0.002 |
| VI-6 | Do you have trouble socializing with relatives due to the Fabry disease? | − 0.212 | 0.348 | 0.462 | − 0.045 | 0.045 |
| I-33 | Do you consider yourself mentally weak? | 0.200 | − 0.014 | 0.458 | 0.188 | − 0.072 |
| I-31 | Do you get dizzy? | 0.009 | − 0.137 | 0.407 | 0.403 | 0.134 |
| I-32 | Do you feel you tire easily? | 0.296 | 0.013 | 0.393 | 0.213 | − 0.001 |
| I-21 | Do you have trouble socializing due to Fabry disease symptoms? | 0.334 | 0.074 | 0.379 | 0.077 | 0.131 |
| II-6 | Are you concerned about side effects from your current treatment? | − 0.251 | 0.245 | 0.313 | 0.197 | 0.267 |
| I-26 | Do you feel that lights are too bright? | − 0.076 | − 0.106 | 0.093 | 0.820 | − 0.022 |
| I-27 | Do you have difficulty seeing at night? | − 0.132 | − 0.022 | 0.185 | 0.766 | − 0.066 |
| I-29 | Do you feel that it is difficult to have conversations because of the ringing in your ears? | 0.099 | 0.416 | − 0.261 | 0.518 | 0.123 |
| I-28 | Do you hear ringing in your ears? | 0.141 | 0.192 | − 0.198 | 0.480 | 0.100 |
| I-30 | Do you experience sudden, intense ringing in your ears? | 0.189 | 0.280 | − 0.238 | 0.408 | 0.139 |
| I-15 | Do you feel pain in your chest or difficulty breathing while walking? | 0.034 | − 0.142 | 0.023 | 0.103 | 0.861 |
| I-14 | Do you experience palpitations? | − 0.087 | − 0.060 | − 0.065 | 0.288 | 0.778 |
| I-17 | Do you feel anxious that your heart symptoms will get worse? | 0.143 | − 0.008 | − 0.067 | − 0.256 | 0.724 |
| I-16 | Do you feel pain in your chest or difficulty breathing while climbing stairs? | 0.155 | − 0.170 | 0.029 | 0.160 | 0.561 |
| II-5 | Are you anxious about the effectiveness of your current treatment? | − 0.249 | 0.319 | 0.185 | − 0.053 | 0.512 |
| I-20 | Do you feel anxious that your kidney symptoms will get worse? | 0.059 | 0.234 | 0.163 | − 0.328 | 0.504 |
| I-18 | Do your hands swell? | 0.225 | − 0.115 | 0.126 | 0.180 | 0.364 |
Factor extraction method: principal axis factoring; Rotation method: Promax with Kaiser normalization; The bold values are the factor loadings for the items included in each factor