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Table 3 Comparison of pain scores between the groups after correction for confounding variables

From: Efficacy of continuous epidural infusion with epidural electric stimulation compared to that of conventional continuous epidural infusion for acute herpes zoster management: a retrospective study

 

Acute HZ (≤ 30 days)

P value

Contrast group (n = 57)

Stimulation group (n = 57)

Baseline pain score

7.4 ± 1.5

7.2 ± 1.5

P = 0.28

Pain scorea immediately after epidural procedure

3.5 ± 2.0

2.9 ± 1.8

P = 0.25

Pain scorea 14 days after epidural procedure

2.8 ± 1.9

1.7 ± 0.8

P = 0.001

Pain scorea 1 month after epidural procedure

3.0 ± 2.1

1.9 ± 1.1

P = 0.01

Pain scorea 3 months after epidural procedure

2.6 ± 1.8

1.5 ± 1.2

P = 0.001

Pain scorea 6 months after epidural procedure

2.2 ± 1.8

1.3 ± 1.1

P = 0.01

  1. Data are reported as adjusted mean ± standard deviation. Data were analyzed for the difference in pain scores between the groups using covariance analysis. Adjustments were made for age, sex, timing from rash to epidural procedure, location of herpes zoster, hypertension, diabetes mellitus, asthma, hepatic disease, and kidney disease
  2. HZ herpes zoster, aPain score on an 11-point (0–10) numerical rating scale