Table 4.
Standardised factor loadings for the EORTC QLQ-NMIBC24 for 541 NMIBC patients participating in UroLife (confirmatory factor analysis)
| Scales and items | Item # | Item topic | Standardized factor loadingsb |
|---|---|---|---|
| Urinary symptom | Item 31 | Have you had to urinate frequently during the day? | 0.682 |
| Item 32 | Have you had to urinate frequently at night? | 0.622 | |
| Item 33 | When you felt the urge to pass urine, did you have to hurry to get to the toilet? | 0.768 | |
| Item 34 | Was it difficult for you to get enough sleep, because you needed to get up frequently at night to urinate? | 0.593 | |
| Item 35 | Have you had difficulty going out of the house, because you needed to be close to a toilet? | 0.586 | |
| Item 36 | Have you had any unintentional release (leakage) of urine? | 0.334 | |
| Item 37 | Have you had pain or a burning feeling when urinating? | 0.497 | |
| Malaise | Item 38 | Did you have a fever? | 0.159 |
| Item 39 | Did you feel ill or unwell? | 0.591 | |
| Future worries | Item 41 | Did you worry about having repeated bladder treatments (cystoscopies or instillations)? | 0.618 |
| Item 42 | Were you worried about your health in the future? | 0.692 | |
| Item 43 | Did you worry about the results of examinations and tests? | 0.700 | |
| Item 44 | Did you worry about possible future treatments? | 0.736 | |
| Bloating and flatulence | Item 45 | Did you have a bloated feeling in your abdomen? | 0.696 |
| Item 46 | Have you had flatulence or gas? | 0.339 | |
| Sexual functioning | Item 47 | To what extent were you interested in sex? | 0.700 |
| Item 48 | To what extent were you sexually active (with or without sexual intercourse)? | 0.542 | |
| Male sexual problems | Item 49 | For men only: Dit you have difficulty gaining or maintaining an erection? | 0.870 |
| Item 50 | For men only: Did you have ejaculation problems (e.g. dry ejaculation)? | 0.827 | |
| Intravesical treatment issues | Item 40 | Did you have trouble arranging your life around the repeated bladder treatment appointments (cystoscopies or instillations)? | 0.564 |
| Sexual intimacy | Item 51 | Have you felt uncomfortable about being sexually intimate? | 0.690 |
| Risk of contaminating partner | Item 52 | Have you worried that you may contaminate your partner during sexual contact with the bladder treatment you have been receiving? | 0.821 |
| Sexual enjoyment | Item 53 | To what extent was sex enjoyable for you? | 0.941 |
| Female sexual problemsa | Item 54 | For women only: did you have a dry vagina or other problems during intercourse? |
aThis scale was excluded from the confirmatory factor analysis
bAll p values were < 0.0001