Table 3.
Correlations between change in photographic hand score and change in (i) radiographic score and (ii) number of clinical features between baseline and 7 years by joint and joint group
| Change in photographic hand OA with change in radiographic OA | Change in photographic hand OA with change in the number of clinical features | ||||
|---|---|---|---|---|---|
| n* | Rho (p value) | n* | Rho (p value) | ||
| Left | DIP2 | 231 | 0.138 (p = 0.036) | 228 | 0.032 (p = 0.627) |
| DIP3 | 234 | 0.202 (p = 0.002) | 243 | 0.161 (p = 0.012) | |
| PIP2 | 244 | 0.198 (p = 0.002) | 250 | 0.116 (p = 0.066) | |
| PIP3 | 236 | −0.089 (p = 0.171) | 243 | 0.076 (p = 0.239) | |
| 1CMC | 191 | 0.130 (p = 0.072) | 189 | 0.094 (p = 0.197) † | |
| Right | DIP2 | 216 | −0.066 (p = 0.337) | 214 | 0.097 (p = 0.155) |
| DIP3 | 228 | 0.070 (p = 0.294) | 231 | 0.092 (p = 0.164) | |
| PIP2 | 236 | 0.134 (p = 0.039) | 242 | 0.023 (p = 0.717) | |
| PIP3 | 231 | −0.019 (p = 0.773) | 235 | 0.138 (p = 0.035) | |
| 1CMC | 182 | 0.102 (p = 0.170) | 177 | 0.063 (p = 0.405) † | |
| Joint group | DIPs | 205 | 0.109 (p = 0.119) | 201 | 0.109 (p = 0.124) |
| PIPs | 226 | 0.143 (p = 0.032) | 228 | 0.241 (p < 0.001) | |
| 1CMCs | 162 | 0.107 (p = 0.176) | 161 | 0.042 (p = 0.596) † | |
* Study population n = 253 but individuals were excluded from analyses if at baseline they had the maximum score in a joint for either construct. † Change in the number of clinical features were − 2 to 2 as only two clinical features for the thumb were assessed at baseline (deformity, joint enlargement). Correlations presented are Spearman Rank correlation coefficients. DIP, Distal Interphalangeal joint; PIP, Proximal Interphalangeal joint; 1CMC, 1st Carpometacarpal joint