ASPI results at baseline (T0) and retest visit (T1).
| T0-Observer-1, n = 68 | T0-Observer-2, n = 6 | T1b, n = 39 | |
|---|---|---|---|
| All tests performed, n (%) | 56 (82) | 55 (89) | 32 (82) |
| Duration total ASPI test, min | 9 ± 3 | 7 ± 2 | 7 ± 2 |
| Patients tested by the observersa, n (%) | |||
| Observer A | 31 (46) | 34 (55) | 22 (56) |
| Observer B | 9 (13) | 9 (15) | 4 (10) |
| Observer C | 9 (13) | 4 (6) | 1 (3) |
| Observer D | 19 (28) | 15 (24) | 12 (31) |
| ASPI test scores | |||
| (1) Bending (pick up 6 pencils), n (%) | 66 (97) | 61 (98) | 38 (97) |
| ASPI time, s | 20.9 (15.7–37.1) | 19.0 (13.7–33.2) | 18.6 (15.7–31.4) |
| Pain, NRS 0–10 | 3 (0–6) | 2 (0–5) | 1 (0–5) |
| Exertion, Borg scale 0–10 | 4 ± 2 | 3 ± 2 | 3.3 ± 2.4 |
| (2) Putting on socks, n (%) | 67 (99) | 60 (98) | 39 (100) |
| ASPI time, s | 14.7 (10.2–21.6) | 11.7 (8.9–18.1) | 13.3 (9.4–19.5) |
| Pain, NRS 0–10 | 1 (0–4) | 1 (0–4) | 1 (0–5) |
| Exertion, Borg scale 0–10 | 3 ± 2 | 3 ± 2 | 3 ± 2 |
| (3) Getting up from the floor, n (%) | 62 (91) | 56 (90) | 33 (85) |
| ASPI time, s | 4.6 (3.7–8.2) | 4.6 (3.6–7.1) | 4.8 (3.5–6.3) |
| Pain, NRS 0–10 | 2 (0–4) | 2 (0–5) | 2 (0–5) |
| Exertion, Borg scale 0–10 | 3 ± 2 | 3 ± 2 | 3 ± 2 |
Values are mean ± SD or median (IQR) unless otherwise indicated.
↵a Observers A, B, C, D were, respectively, RvB, SIV, MPF, FVA.
↵b T1 was performed median 7 (IQR 7–14) days after T0, by the same observer as T0-Observer-1. ASPI: Ankylosing Spondylitis Performance Index; IQR: interquartile range; NRS: numerical rating scale.