Table IV.
Subscale internal consistency of the IT-QOD. Item-to-total correlation and Cronbach’s alpha for questionnaire items.
| # | Item | Item-to-total correlation | Cronbach’s alpha if item is deleted |
|---|---|---|---|
| Parosmia statements | |||
| P1 | Food tastes different from what used to. | 0.317 | 0.849 |
| P2 | Often I perceive a bad smell, regardless whether a potential odour source is present. | 0.576 | 0.671 |
| P3 | Other people find odours pleasant which are unpleasant to me. | 0.679 | 0.614 |
| P5 | My biggest problem is not that odours are less intense (or absent), but that things smell different from what they used to. | 0.696 | 0.585 |
| Life quality statements | |||
| 1 | Because of the changes in my sense of smell, I go to restaurants less often than I used to. | 0.680 | 0.952 |
| 4 | I am always aware of the changes in my sense of smell. | 0.747 | 0.951 |
| 11 | Because of the changes in my sense of smell, I don’t enjoy drinks or food as much as I used to. | 0.700 | 0.952 |
| 13 | I am worried that I will never get used to the changes in my sense of smell. | 0.724 | 0.951 |
| 15 | Because of the changes in my sense of smell, I feel more anxious than I used to feel. | 0.846 | 0.949 |
| 19 | The changes in my sense of smell cause most of my problems. | 0.742 | 0.951 |
| 22 | The changes in my sense of smell annoy me when I am eating. | 0.722 | 0.951 |
| 26 | Because of the changes in my sense of smell I visit friends, relatives, or neighbours less often. | 0.682 | 0.952 |
| 27 | Because of the changes in my sense of smell, I try harder to relax. | 0.792 | 0.950 |
| 28 | Because of the changes in my sense of smell I have weight problems. | 0.676 | 0.952 |
| 32 | I am wondering if I will ever be able to live with this problem. | 0.634 | 0.952 |
| 33 | The changes in my sense of smell make me feel isolated. | 0.680 | 0.952 |
| 34 | Because of the changes in my sense of smell I avoid groups of people. | 0.623 | 0.953 |
| 35 | This problem is just one of the many problems in life one has to live with. | 0.508 | 0.955 |
| 37 | Because of the changes in my sense of smell I eat less than I used to or more than I used to. | 0.800 | 0.950 |
| 39 | Because of the difficulties with smelling, I am scared of getting exposed to certain dangers (e.g., gas, rotten food). | 0.764 | 0.951 |
| 42 | Because of the changes in my sense of smell I have problems with taking part in activities of daily life. | 0.853 | 0.949 |
| 49 | The changes in my sense of smell make me feel angry. | 0.841 | 0.949 |
| 50 | Because of the changes in my sense of smell, my relationship with my wife / husband / partner is affected. | 0.477 | 0.954 |
| Sincerity statements | |||
| S14 | I always keep my promises, as hard as it is. | 0.051 | 0.182 |
| S17 | Sometimes I have thoughts and ideas I would not want other people to know of. | 0.197 | 0.031 |
| S23 | I always behave well and properly. | 0.04 | 0.189 |
| S31 | Among all people I know, there is someone I can’t stand. | 0.230 | 0.008 |
| S36 | I have never been late to an appointment or work. | -0.166 | 0.374 |
| S48 | Sometimes I talk about things I don’t know. | 0.148 | 0.093 |