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Table 4 Descriptive statistics and reliability indices ( n= 310)

From: Psychometric properties of the stagnation scale in medication overuse headache patients

  M (SD) Men n = 189 Women n = 121 t-test (DF = 309) P Cronbach alpha Inter-item mean correlation
Stagnation total score 51.64 (29.70) 50.81 (28.66) 52.94 (31.34) -0.61 0.54 0.93 0.44
Overattachment 24.78 (14.61) 24.15 (13.92) 25.79 (15.64) -0.96 0.34 0.87 0.49
Body-Mind obstruction 16.61 (10.57) 16.66 (10.29) 16.54 (11.04) 0.09 0.93 0.85 0.53
Affect-Posture inhibition 10.36 (8.18) 10.21 (7.94) 10.61 (8.56) -0.42 0.68 0.83 0.56
BDI-II 11.15 (9.43) 11.74 (9.65) 10.56 (9.98) 1.04 0.30 0.92 0.36
BDI-II ≥ 20 16.4% 16.6% 16.1% - 0.52 - -
IPDS 26.09 (16.63) 27.48 (16.76) 23.95 (16.27) 1.82 0.07 0.92 0.36
  1. BDI-II = Beck Depression Inventory – II; IPDS = Italian Perceived Disability Scale.