Table 4 Comparison of anthropometric, clinical and densitometric variables between patients with AS with and without sarcopenia according to EWGSOP definition
AS patients with sarcopenia N = 23 | AS patients without sarcopenia N = 44 | P | |
|---|---|---|---|
Age (yrs): m (SD) | 42.3 (11.6) | 40.1 (10.7) | NS |
Height (m): m (SD) | 1.71 (0.06) | 1.73 (0.06) | NS |
Weight (kg): m (SD) | 64.6 (11.0) | 77.9 (11.9) | <0.0001 |
BMI (kg/m2): m (SD) | 21.6 (3.6) | 25.7 (3.7) | <0.0001 |
Disease duration (yrs): m (SD) | 11.6 (9.1) | 8.6 (6.6) | NS |
Lumbar spine BMD (g/cm2): m (SD) | 1.092 (0.23) | 1.134 (0.14) | NS |
Lumbar spine T-score: m (SD) | −0.97 (3.4) | −0.47 (1.2) | 0.032 |
Total hip BMD (g/cm2): m (SD) | 0.914 (0.13) | 1.006 (0.23) | 0.017 |
Total hipT-score: m (SD) | −0.96 (1.4) | −0.35 (1.1) | 0.017 |
Osteoporosis: n (%) | 7 (30.4) | 4 (9.1) | 0.038 |
BASDAI (0–10): m (SD) | 4.4 (2.4) | 3.4 (2.5) | 0.002 |
BASMI (0–10): m (SD) | 2.9 (2.2) | 2.7 (2.7) | NS |
BASFI (0–100): m (SD) | 44.5 (26.5) | 38.0 (25.5) | NS |
BAS-G (0–100): m (SD) | 19.7 (16.8) | 16.1 (22.6) | NS |
Hand grip strength (kg): m (SD) | 19.5 (7.0) | 25.3 (9.8) | NS |
Timed get-up-and-go test (sec) < 10 sec: n (%) | 14 (66.7) | 33 (75.0) | NS |
Arm circumference (cm): m (SD) | 26.8 (1.9) | 30.5 (3.9) | 0.002 |
Waist circumference (cm): m (SD) | 85.7 (10.8) | 94.1 (11.4) | <0.0001 |
MNA test (0–17): m (SD) | 0.34 (0.4) | 0.19 (0.3) | NS |
SASSS (0–72): m (SD) | 14.3 (18.7) | 9.5 (14.6) | NS |
CRP (mg/l): m (SD) | 21.8 (10.1) | 11.6 (10.1) | NS |
ESR (mm/H): m (SD) | 31.0 (22.3) | 24.2 (18.4) | NS |
Patients taking TNFi: n (%) | 11 (33.3) | 11 (32.4) | NS |