Table 2.
Prevalence estimates and gender differences in painful body regions in patients with axial spondyloarthritis (n = 170)
| Body region | Location numbers | Total group | Males (n = 108) | Females (n = 62) | Chi-square value | p Value | ORa | p Value |
|---|---|---|---|---|---|---|---|---|
| Leg right | 41, 43, 45, 47 | 11.2 (10.8–11.6) | 10.2 (9.9–10.5) | 12.9 (12.5–13.3) | 0.293 | .588 | 1.35 (0.43–4.30) | .588 |
| Leg left | 42, 44, 46, 48 | 10 (9.7–10.3) | 9.3 (9–9.6) | 11.3 (10.9–11.7) | 0.181 | .671 | 0.77 (0.21–2.77) | .687 |
| SIJ | 49, 50 | 32.9 (32.4–33.4) | 26.9 (26.4–27.4) | 43.5 (42.9–44.1) | 4.971 | .026 | 1.76 (0.82–3.81) | .149 |
| LX | 47–56 | 74.7 (74.2–75.2) | 69.4 (68.9–69.9) | 83.9 (83.5–84.3) | 4.338 | .037 | 1.74 (0.73–4.14) | .210 |
| TX | 57–60 | 32.4 (31.9–32.9) | 25 (24.5–25.5) | 45.2 (44.6–45.8) | 7.315 | .007 | 2.92 (1.30–6.55) | .009 |
| CTJ | 61–64 | 47.6 (47–48.2) | 48.1 (47.5–48.7) | 66.1 (65.6–66.6) | 5.139 | .023 | 2.48 (1.17–5.26) | .018 |
| CX | 65, 66 | 47.6 (47–48.2) | 45.4 (44.8–46.0) | 51.6 (51–52.2) | 0.615 | .433 | 1.55 (0.75–3.23) | .240 |
| CX and head | 19–24, 65–68 | 54.7 (54.1–55.3) | 50.9 (50.3–51.5) | 61.3 (60.7–61.9) | 1.708 | .191 | 1.71 (0.81–3.60) | .159 |
| Sternum | 17, 18 | 20.6 (20.1–21.1) | 18.5 (18.1–18.9) | 24.2 (23.7–24.7) | 0.776 | .378 | 0.98 (0.39–2.48) | .972 |
| LX only | 47–56 | 21.2 (20.7–21.7) | 20.4 (19.9–20.9) | 22.6 (22.1–23.1) | 0.115 | .734 | 0.97 (0.41–2.30) | .944 |
| TX only | 57–60 | 0.6 (1.5–0.7) | 0.0 (0.0–0.0) | 1.6 (1.5–1.7) | 0.102b | .186 | 0.00 (0.00–0.00) | .999 |
| CX only | 61–68 | 10.6 (10.2–11.0) | 12.0 (11.5–12.4) | 8.1 (7.8–8.4) | 0.657 | .418 | 1.02 (0.31–3.34) | .999 |
| Widespread axial pain | 47–66c | 26.5 (26.0–27.0) | 19.4 (18.9–19.9) | 38.7 (38.1–39.3) | 7.511 | .006 | 3.33 (1.38–8.02) | .007 |
| Widespread peripheral articular pain | 1–4, 7, 8, 25, 26, 29, 30, 33–36, 37–40, 43, 44, 73, 74, 77–80 | 46.5 (45.9–47.1) | 40.7 (40.1–41.3) | 56.5 (55.9–57.1) | 3.908 | .048 | 2.34 (1.12–4.88) | .023 |
| Widespread peripheral non-articular pain | 5, 6, 9–14, 25–28, 31, 32, 41, 42, 45, 46, 69–72, 75, 76 | 44.7 (44.1–45.3) | 39.8 (39.2–40.4) | 53.2 (52.6–53.8) | 2.866 | .090 | 1.97 (0.93–4.15) | .079 |
Abbreviations: SIJ Sacroiliac joint, LX Lumbar spine, CX Cervical spine, TX Thoracic spine, CTJ Cervicothoracic junction
aMultivariate OR ± 95% CI based on logistic regression analysis correcting for age, disease duration, spinal mobility (Bath Ankylosing Spondylitis Metrology Index), disease activity (Bath Ankylosing Spondylitis Disease Activity Index and physician global assessment of disease activity (n = 146)
bPhi value is given because of low cell frequency (fewer than cases); significant results in bold; p < .05
c Positive if pain is present in regions 47–56 and 57–60 and in regions 61–64 and 65–66