| All | High risk for axSpA | Moderate risk for axSpA | Low risk for axSpA | |||
---|---|---|---|---|---|---|---|
No. [%] (95% CI) n = 600 | AS No. (95% CI) n = 100 | HLA-B27+ No. (95% CI) n = 100 | Non-AS SpA subtype No. (95% CI) n = 100 | Sacroiliitis No. (95% CI) n = 100 | SpA mimics No. (95% CI) n = 100 | Chronic back pain No. (95% CI) n = 100 | |
Yes AxSpA | 162 [27.0] (23.5–30.7) | 87 (78.8–92.9) | 38 (28.5–48.3) | 27 (18.6–36.8) | 7 (2.9–13.9) | 2 (0.2–7.0) | 1 (0.0–5.5) |
No AxSpA | 409 [68.2] (64.3–71.9) | 4 (1.1–9.9) | 57 (46.7–66.9) | 63 (52.8–72.4) | 89 (81.2–94.4) | 97 (91.5–99.4) | 99 (94.6–100.0) |
Uncertain AxSpA | 29 [4.8] (3.3–6.9) | 9 (4.2–16.4) | 5 (1.6–11.3) | 10 (4.9–17.6) | 4 (1.1–9.9) | 1 (0.0–5.5) | 0 (0.0–3.6) |