Table 6.
Assessment of intra and inter-interviewer reproducibility of AOFAS-MTP-IP scale with Pearson correlation coefficient
| AOFAS-MTP-IP Questions/Items | Pearson Correlation Coefficient | |
| Intra-Interviewer | Inter-Interviewer | |
| Pain | 0.8715 | 0.8799 |
| Activity limitation | 0.6269 | 0.6052 |
| Footwear requirements | 0.7844 | 0.6630 |
| MTP joint motion (dorsiflexion plus plantarflexion) | 0.6425 | 0.6070 |
| IP joint motion (plantarflexion) | n.d. | n.d. |
| MTP-IP stability (all directions) | n.d. | n.d. |
| Callus related to hallux MTP-IP | n.d. | n.d. |
| Alignment | 0.6309 | 0.6021 |
n.d. = not detectable, owing the occurrence of constant values report