Questionnaire summary scores.
| Questionnaire | Sample Size | ICC (95% CI) | Difference Between WB and PB Scores |
|---|---|---|---|
| SF-36 PCS (0–100)* | 56 | 0.96 (0.93, 0.98) | –0.48 (–2.6, 1.4) |
| SF-36 MCS (0–100)* | 56 | 0.89 (0.82, 0.93) | 0 (–1.4, 1.3) |
| HAQ (0–3)** | 62 | 0.97 (0.95, 0.98) | 0 (0, 0) |
| FSS (0–10)** | 62 | 0.95 (0.92, 0.97) | 0 (–0.5, 0.3) |
| FACIT (0–52)* | 61 | 0.96 (0.93, 0.98) | 0 (–2, 1) |
| EQ-5D (–0.59 to +1.0)* | 62 | 0.93 (0.89, 0.96) | 0 (0, 0) |
| BAS-G (0–10)** | 63 | 0.95 (0.92, 0.97) | 0 (–0.5, 0) |
| BASDAI (0–10)** | 63 | 0.97 (0.95, 0.98) | 0 (–0.3, 0.3) |
| BASFI (0–10)** | 61 | 0.95 (0.912, 0.97) | 0 (–0.2, 0.2) |
| ASQoL (0–18)** | 61 | 0.97 (0.95, 0.98) | 0 (0, 1) |
| DLQI (0–30)** | 60 | 0.96 (0.93, 0.97) | 1 (0, 1) |
↵* Higher scores indicate a better state (or fewer symptoms).
↵** Higher scores indicate a worse state (or more symptoms). ICC: intraclass correlation coefficient; WB: Web-based; PB: paper-based; SF-36: Short Form-36 Health Survey; PCS: physical component summary scale; MCS: mental component summary scale; HAQ: Health Assessment Questionnaire; FSS: Fatigue Severity Scale; FACIT: Functional Assessment of Chronic Illness therapy Fatigue Scale; BSA-G: Bath Ankylosing Spondylitis Global Score; BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; BASFI: Bath Ankylosing Spondylitis Functional Index; ASQoL: Ankylosing Spondylitis Quality of Life Instrument; DLQOI: Dermatology Life Quality Index.