Table 3 Measurement of urate deposition using the semi-quantitative DECT scoring system and the stratification by disease duration
Value | No. of patients (n, %) | Total urate scores (x ± s) | Z of duration ≤ 3 yrs versus duration>3 yrs | P value of duration ≤ 3 yrs versus duration>3 yrs | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Score of 0 | Score of 1 | Score of 2 | Score of 3 | Score of 4 | Score of 5 | Score of 6 | Overall disease duration | Disease ≤3 yrs. duration | Disease>3 yrs. duration | |||
MTP 1st joint | 65 (44.5) | 16 (11.0) | 13 (8.9) | 15 (10.3) | 11 (7.5) | 8 (5.5) | 18 (12.3) | 1.43 ± 2.06 | 1.13 ± 1.81 | 2.30 ± 2.26 | − 3.085 | 0.002 |
Other joints of the toes | 116 (79.5) | 4 (2.7) | 8 (5.5) | 6 (4.1) | 1 (0.7) | 3 (2.1) | 8 (5.5) | 0.54 ± 1.46 | 0.10 ± 0.37 | 1.02 ± 1.93 | −2.798 | 0.005 |
Ankles/ Midfeet | 83 (56.8) | 3 (2.1) | 13 (8.9) | 4 (2.7) | 6 (4.1) | 6 (4.1) | 31 (21.2) | 1.44 ± 2.32 | 1.06 ± 2.10 | 2.35 ± 2.59 | −3.306 | 0.001 |
Tendons | 111 (76.0) | 1 (0.7) | 8 (5.5) | 8 (5.5) | 3 (2.1) | 4 (2.7) | 11 (7.5) | 0.71 ± 1.68 | 0.48 ± 1.26 | 1.18 ± 2.10 | − 1.996 | 0.046 |
All joints and tendons | _ | 4.12 ± 6.27 | 2.77 ± 4.16 | 6.85 ± 7.32 | −3.723 | <0.001 | ||||||