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Table 3 Spearman’s correlation coefficients patient level variables and joint level variables

From: Plantar plate pathology is associated with erosive disease in the painful forefoot of patients with rheumatoid arthritis

 

PPP

(N affected/4)

Larsen score

(Max)

Subluxation

(N affected/4)

Callus

(N affected /4)

Peak pressure

(Max)

Rh factor

0.19, p = 0.250

0.06, p = 0.697

0.15, p = 0.363

0.03, p = 0.859

0.26, p = 0.099

RA duration (months)

0.14, p = 0.389

0.42, p = 0.007

0.34, p = 0.030

0.37, p = 0.018

0.30, p = 0.058

PPP

(N affected/4)

-

0.60, p < 0.001

0.25, p = 0.117

0.21, p = 0.178

0.05, p = 0.774

Larsen score

(Max)

-

-

-

-

0.19, p = 0.243

Subluxation

(N affected/4)

-

-

-

-

0.34, p = 0.032

 

Platto

FIS IF

FIS AP

VAS pain

Gait velocity

Rh factor

0.25, p = 0.118

0.24, p = 0.134

−0.10, p = 0.534

0.27, p = 0.089

0.01, p = 0.937

RA duration (months)

0.56, p < 0.001

−0.04, p = 0.824

0.19, p = 0.245

0.21, p = 0.183

−0.10, p = 0.548

Age

0.01, p = 0.503

0.03, p = 0.862

0.07, p = 0.646

0.08, p = 0.602

−0.21, p = 0.197

Sex

-

0.00, p = 0.988

0.00, p = 0.988

0.03, p = 0.829

0.02, p = 0.902

DAS44 (CRP)

-

0.30, p = 0.062

0.47, p = 0.002

0.02, p = 0.908

−0.47, p = 0.002

PPP

(N affected/4)

0.40, p = 0.010

0.23, p = 0.152

0.22, p = 0.170

0.12, p = 0.439

−0.23, p = 0.157

Larsen score (Max)

0.50, p = 0.001

0.11, p = 0.508

0.18, p = 0.253

0.12, p = 0.458

−0.21, p = 0.194

Subluxation (N affected/4)

-

0.50, p = 0.010

0.26, p = 0.100

0.18, p = 0.250

−0.33, p = 0.034

Callus (N affected/4)

-

0.10, p = 0.533

0.02, p = 0.920

0.11, p = 0.483

0.11, p = 0.509

Peak pressure (Max)

0.34, p = 0.029

0.08, p = 0.634

−0.14, p = 0.389

0.18, p = 0.253

0.20, p = 0.220

Platto score

-

0.32, p = 0.044

0.21, p = 0.182

0.31, p = 0.051

−0.22, p = 0.160

  1. Rh rheumatoid, PPP plantar plate pathology; absolute rho ≥0.3 was considered preliminary evidence of substantive association