Table 1

Characteristics of the study groups

Overall (n=293)Female (n=173)Male (n=120)
Patients with foot pain and RAPatients with foot pain but no RA (control group)P valuePatients with foot pain and RAPatients with foot pain but no RA (control group)P valuePatients with foot pain and
RA
Patients with foot pain but no RA (control group)P value
MedianIQRMedianIQRMedianIQRMedianIQRMedianIQRMedianIQR
Age (years)591653210.003*59165321<0.001*581653.5240.845
Height (cm)16210162100.40116010160.590.23617010171150.578
Weight (kg)701965150.168651562.5110.334781876.5130.35
General VAS (0–100)631.54<0.001*6325<0.001*5401<0.001*
Hand VAS6303<0.001*6413<0.001*5401<0.001*
Feet VAS6525<0.001*6425<0.001*4501<0.001*
MFPDI2118410<0.001*22174.511<0.001*19180.56<0.001*
FFI total43.91456.5218<0.001*48.3399.123<0.001*30.45105<0.001*
FFI pain4838829<0.001*50341433<0.001*41.54704<0.001*
FFI disability4958014<0.001*5150218<0.001*245600<0.001*
FFI physical activity61902<0.001872002<0.001*31500<0.001*
W/b r/foot24222244180.33923715240.5170.03726118261220.777
W/b first MTPJ r/foot18016180.5150.84317811177140.849195.514189.5190.9
W/b r/MF height53.89.756.26510.31<0.001*51.48.254.49.40.007*58.86.365.8160.004*
W/b r/MF width778.6374.9658.930.035*75.56.773.96.90.03*83.57.281.58.70.559
W/b r/forefoot91.389.3491.697.080.50889.7788.56.80.58997.37.896.47.40.941
W/b r/hindfoot66.527.2966.1056.160.08965.76.265.26.60.15771.87.668.54.20.39
FPI total (r/foot)57540.33856550.80728530.205
  • *Mann-Whitney U test. Significance p<0.05

  • FFI, Foot Function Index; FPI, Foot Posture Index; MF, midfoot; MFPDI, Manchester Foot Pain Disability Index; MTPJ, metatarsophalangeal joints; r/, right; RA, rheumatoid arthritis; VAS, Visual Analogue Scale; W/b, weight-bearing.