Table 4 Pearson correlations between instruments

PGQ_TOTAL

1

.994^**

.917^**

<0.05

PGQ_SubAct

.994^**

1

.870^**

<0.05

PGQ_SubSint

.917^**

.875^**

1

<0.05

ODI_TOTAL

.838^**

.814^**

.845^**

<0.05

FAB_TOTAL

.530^**

.511^**

.549^**

<0.05

PCS_TOTAL

.768^**

.748^**

.771^**

<0.05

PCS_Rum

.729^**

.711^**

.722^**

<0.05

PCS_Mag

.601^**

.589^**

.587^**

<0.05

PCS_Help

.777^**

.752^**

.794^**

<0.05

VAS

.762^**

.750^**

.733^**

<0.05

SF8

.805^**

.792^**

.775^**

<0.05