Table 2.
Results of descriptive statistics of items and confirmatory factor analyses of the US and DK samples.
| Development sample (US-based) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Sub-scale | Item | Mean | SD | Inter-item correlation |
Floor | Ceiling | Item-total correlation |
Factor Loading |
| Symptoms |
Pain | 2.1 | 1.3 | (0.55 to 0.65) | 12.1 | 17.9 | 0.70 | 0.81 |
| Itch | 0.9 | 1.2 | (0.35 to 0.55) | 54.3 | 4.7 | 0.49 | 0.55 | |
| Drainage | 1.9 | 1.4 | (0.35 to 0.67) | 19.6 | 18.8 | 0.69 | 0.90 | |
| Odor | 1.7 | 1.4 | (0.36 to 0.67) | 26.8 | 16.7 | 0.64 | 0.81 | |
| CFA: Chi-Square=11.1, df=10, p=0.3464. RMSEA=0.023 (90% CI 0.000 to 0.078), CFI=0.999, TLI=0.998. | ||||||||
| Psychosocial |
Down or depressed | 1.7 | 1.4 | (0.54 to 0.66) | 25.3 | 14.0 | 0.75 | 0.90 |
| Embarrassed | 2.3 | 1.5 | (0.40 to 0.66) | 18.0 | 30.1 | 0.71 | 0.85 | |
| Anxious or nervous | 1.5 | 1.4 | (0.41 to 0.64) | 34.5 | 13.6 | 0.68 | 0.80 | |
| Concentration | 1.0 | 1.1 | (0.39 to 0.58) | 40.7 | 2.7 | 0.58 | 0.65 | |
| Sexual desire | 2.2 | 1.6 | (0.39 to 0.58) | 24.6 | 35.2 | 0.58 | 0.71 | |
| CFA: Chi-Square=26.9, df=15, P=0.0292. RMSEA=0.059 (90% CI 0.019 to 0.095), CFI=0.991, TLI=0.985. | ||||||||
|
Activities-adaptations |
Walking | 1.2 | 1.1 | (0.32 to 0.63) | 35.7 | 3.1 | 0.68 | 0.73 |
| Exercising | 1.8 | 1.5 | (0.39 to 0.63) | 27.1 | 19.0 | 0.72 | 0.79 | |
| Sleeping | 1.3 | 1.3 | (0.28 to 0.62) | 36.0 | 8.9 | 0.68 | 0.80 | |
| Washing yourself | 1.4 | 1.2 | (0.38 to 0.68) | 29.1 | 6.2 | 0.68 | 0.73 | |
| Getting dressed | 1.3 | 1.3 | (0.41 to 0.68) | 31.5 | 5.1 | 0.72 | 0.84 | |
| What you wear | 2.4 | 1.3 | (0.34 to 0.61) | 9.3 | 26.4 | 0.62 | 0.75 | |
| Ability to work/study | 1.3 | 1.4 | (0.26 to 0.54) | 44.2 | 14.3 | 0.60 | 0.68 | |
| Sexual activity difficult | 1.8 | 1.7 | (0.36 to 0.54) | 38.0 | 28.3 | 0.65 | 0.76 | |
| Chi-Square=56.9, df=38, P=0.0286, RMSEA=0.046 (90% CI 0.015 to 0.070), CFI=0.992, TLI=0.989. | ||||||||
| Validation sample (DK-based) | ||||||||
| Sub-scales | Item | Mean | SD | Inter-item correlation |
Floor | Ceiling | Item-total correlation |
Factor Loading |
| Symptoms | Pain | 2.0 | 1.3 | (0.51 to 0.67) | 12.3 | 14.9 | 0.72 | 0.80 |
| Itch | 1.1 | 1.3 | (0.35 to 0.51) | 47.4 | 7.9 | 0.46 | 0.55 | |
| Drainage | 1.8 | 1.3 | (0.35 to 0.68) | 19.9 | 14.9 | 0.71 | 0.91 | |
| Odor | 1.6 | 1.4 | (0.35 to 0.68) | 28.0 | 13.6 | 0.65 | 0.82 | |
| Chi-Square=8.4, df=8, p=0.3973, RMSEA=0.015 (90% CI 0.000 to 0.083), CFI=1.000, TLI=0.999 | ||||||||
|
Psychosocial |
Down or depressed | 1.6 | 1.4 | (0.51 to 0.65) | 28.3 | 12.1 | 0.75 | 0.89 |
| Embarrassed | 1.9 | 1.5 | (0.43 to 0.62) | 25.3 | 22.3 | 0.71 | 0.73 | |
| Anxious or nervous | 1.2 | 1.4 | (0.43 to 0.65) | 43.9 | 9.8 | 0.69 | 0.90 | |
| Concentration | 1.0 | 1.1 | (0.40 to 0.61) | 42.2 | 4.0 | 0.61 | 0.87 | |
| Sexual desire | 2.1 | 1.6 | (0.40 to 0.57) | 25.9 | 32.8 | 0.58 | 0.60 | |
| Chi-Square=27.5, df=15, p=0.0252. RMSEA=0.062 (90% CI 0.022 to 0.099), CFI=0.991, TLI=0.986. | ||||||||
| Activities-adaptations | Walking | 1.1 | 1.2 | (0.41 to 0.60) | 40.3 | 4.3 | 0.65 | 0.77 |
| Exercising | 1.8 | 1.5 | (0.46 to 0.60) | 30.2 | 20.2 | 0.74 | 0.85 | |
| Sleeping | 1.3 | 1.3 | (0.43 to 0.61) | 38.8 | 9.5 | 0.69 | 0.78 | |
| Washing yourself | 1.5 | 1.2 | (0.40 to 0.73) | 24.1 | 7.3 | 0.69 | 0.82 | |
| Getting dressed | 1.4 | 1.2 | (0.40 to 0.73) | 29.9 | 5.6 | 0.74 | 0.85 | |
| What you wear | 2.3 | 1.4 | (0.39 to 0.54) | 11.8 | 24.8 | 0.59 | 0.70 | |
| Ability to work/study | 1.1 | 1.4 | (0.39 to 0.52) | 52.5 | 12.5 | 0.61 | 0.75 | |
| Sexual activity difficult | 1.6 | 1.7 | (0.41 to 0.48) | 43.2 | 24.8 | 0.57 | 0.58 | |
| Chi-Square=52.9, df=40, p=0.0829. RMSEA=0.039 (90% CI 0.000 to 0.065), CFI=0.995, TLI=0.994. | ||||||||
SD: standard deviation