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Table 2 Mean Improvement in PROs Corresponding to a 2-Point Improvement in Pain for Patients and Preselected Subgroups

From: Relationships between changes in pain severity and other patient-reported outcomes: an analysis in patients with posttraumatic peripheral neuropathic pain

 

MEAN (95% CI) IMPROVEMENT IN PRO THAT CORRESPONDED TO A 2-POINT IMPROVEMENT IN PAIN

GROUP

MOS-SS DISTURBANCE

MOS-SS 9-ITEM SLEEP PROBLEMS INDEX

SLEEP INTERFERENCE (NRS)

HADS ANXIETY

HADS DEPRESSION

PII

All patients

(N = 254)

-11.87

(-14.83, -8.91)

-7.59

(-9.91, -5.27)

-1.64

(-1.86, -1.43)

-1.52

(-1.97, -1.07)

-1.23

(-1.58,-0.88)

-1.48

(-1.72, -1.25)

Subgroups

      

30% responders

(n = 82)*

-11.57

(-19.17, -3.98)

-7.41

(-13.31, -1.50)

-1.54

(-2.05, -1.03)

-1.57

(-2.61, -0.53)

-1.39

(-2.13,-0.65)

-1.68

(-2.22, -1.14)

50% responders

(n = 48)*

-13.12

(-25.04, -1.19)

-8.37

(-18.07,1.32)

-1.70

(-2.70,-0.70)

-2.04

(-3.88, -0.21)

-1.25

(-2.50,0)

-2.21

(-3.13,-1.28)

Pregabalin-

treated patients

(n = 127)

-15.79

(-19.76, -11.83)

-9.85

(-13.14, -6.57)

-1.67

(-1.96, -1.38)

-1.64

(-2.25,-1.03)

-1.56

(-2.00,-1.12)

-1.71

(-2.05,-1.38)

Placebo-treated

patients (n = 127)

-7.09

(-11.51,-2.68)

-4.93

(-8.22, -1.65)

-1.62

(-1.95, -1.29)

-1.41

(-2.09, -0.74)

-0.83

(-1.39,-0.27)

-1.18

(-1.51,-0.85)

Age ≤ 51 y

(n = 127)

-8.12

(-12.35, -3.89)

-5.16

(-8.41, -1.91)

-1.59

(-1.89, -1.30)

-1.17

(-1.83, -0.51)

-0.75

(-1.28, -0.22)

-1.47

(-1.79, -1.15)

Age > 51 y

(n = 124)

-15.64

(-19.74, -11.54)

-10.17

(-13.48, -6.86)

-1.69

(-2.01, -1.38)

-1.87

(-2.48, -1.27)

-1.71

(-2.16, -1.26)

-1.50

(-1.85, -1.15)

  1. Mean Improvement = decrease; CI, confidence interval; HADS, Hospital Anxiety and Depression Scale; MOS-SS, Medical Outcomes Study-Sleep Scale; NRS, numeric rating scale; PII, Pain Interference Index; PROs, patient-reported outcomes.
  2. *30% and 50% responders are those patients who achieved at least a 30% and 50% reduction in pain, respectively, in the clinical trial on which this analysis was based.