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Table 3 Mean scores and standard deviations of the scales of the Multidimensional Pain Inventory clusters at 4 weeks before and at entry to a pain program

From: Reliability of the Multidimensional Pain Inventory and stability of the MPI classification system in chronic back pain

MPI scales MPI clusters at T0 (m,s) MPI clusters at T1 (m,s)
  ID n = 49 AC n = 51 DYS n = 104 ID n = 55 AC n = 66 DYS n = 83
Pain severity (100 = most) 75.9 (15.1) 63.0 (17.0) 82.6 (12.7) 76.4 (12.1) 59.5 (15.2) 83.6 (9.4)
Interference (100 = worst) 77.2 (13.0) 58.9 (16.4) 81.3 (10.9) 76.6 (11.7) 57.5 (15.2) 81.7 (9.7)
Life control (100 = best) 42.2 (17.6) 65.2 18.2) 45.1 (22.2) 42.7 (19.2) 63.7 (17.0) 44.4 (20.9)
Negative mood (100 = worst) 66.3 (13.6) 39.8 (17.3) 68.9 (15.0) 67.3 (14.9) 38.0 (17.3) 68.8 (18.0)
Support (100 = most) 44.0 (23.5) 61.9 (19.7) 85.0 (13.7) 41.6 (24.0) 66.9 (18.5) 88.7 (12.0)
Negative, punishing responses (100 = most) 34.4 (29.1) 11.0 (13.8) 28.6 (26.5) 33.0 (29.2) 13.9 (15.3) 26.9 (24.1)
Solicitous responses (100 = best) 33.3 (17.1) 47.5 (20.0) 75.5 (15.2) 34.5 (16.7) 53.0 (19.0) 79.0 (15.5)
Distracting responses (100 = best) 30.5 (18.7) 43.0 (21.2) 69.7 (17.6) 33.7 (20.5) 50.5 (19.4) 73.5 (16.9)
General activity (100 = most) 34.1 (12.0) 38.1 (12.1) 33.0 (14.9) 37.5 (11.6) 38.2 (12.5) 30.9 (14.3)
  1. MPI: Multidimensional Pain Inventory, ID: MPI cluster interpersonally distressed, AC: MPI cluster adaptive copers, DYS: MPI cluster dysfunctional, T0: 4 weeks before entry to pain management program, T1: at entry to pain management program, m: mean, s: standard deviation.