Table 2

Correlation between PGIC and change (Δ) in disease severity measures

ParameterStatisticPGICΔ PainΔ PGAΔ Body MapΔ FIQΔ HAQΔ MPQ
PGICr1.000−0.387−0.327−0.287−0.423−0.343−0.250
p Value<0.001<0.001<0.001<0.001<0.001<0.001
Δ Painr−0.3871.0000.5650.2700.5430.3610.322
p Value<0.001<0.001<0.001<0.001<0.001<0.001
Δ PGAr−0.3270.5651.0000.3330.5310.4260.338
p Value<0.001<0.001<0.001<0.001<0.001<0.001
Δ Body Mapr−0.2870.2700.3331.0000.3160.2550.327
p Value<0.001<0.001<0.001<0.001<0.001<0.001
Δ FIQr−0.4230.5430.5310.3161.0000.3140.413
p Value<0.001<0.001<0.001<0.001<0.001<0.001
Δ HAQr−0.3430.3610.4260.2550.3141.0000.241
p Value<0.001<0.001<0.001<0.001<0.001<0.001
Δ MPQr−0.2500.3220.3380.3270.4130.2411.000
p Value<0.001<0.001<0.001<0.001<0.001<0.001
  • FIQ, Fibromyalgia Impact Questionnaire; HAQ, Health Assessment Questionnaire; MPQ, McGill Pain Questionnaire; PGA, Pain Global Assessment; PGIC, Patient Global Impression of Change.