Table. 2.

Differences between and within groups

Group Baseline 3rd week 3rd month Baseline vs. 3rd week
P valueb
Baseline vs. 3rd month
P valueb
NRS-CESI 7.85 ± 1.15 4.14 ± 2.36 5.85 ± 2.01 < 0.001 (2.718 to 4.676) < 0.001 (1.173 to 2.817)
NRS-GIB 8.47 ± 0.96 2.97 ± 2.13 5.17 ± 2.49 < 0.001 (4.506 to 6.478) < 0.001 (2.137 to 4.439)
P valuea 0.213 (0.104 to 1.131) 0.034 (–2.262 to –0.076) 0.222 (–1.771 to 0.423)
SF-12 physical score-CESI 39.30 ± 13.56 47.93 ± 11.25 43.34 ± 9.82 < 0.001 (–13.513 to –3.744) 0.204 (–9.404 to 1.376)
SF-12 physical score-GIB 40.44 ± 13.34 48.39 ± 12.42 42.96 ± 9.06 0.001 (–12.802 to –3.093) 0.323 (–6.340 to 1.313)
P valuea 0.718 (–5.371 to 7.663) 0.871 (–5.267 to 6.197) 0.868 (–4.950 to 4.194)
SF-12 mental score-CESI 41.19 ± 6.07 41.87 ± 4.61 42.60 ± 3.56 > 0.999 (–3.850 to 2.484) 0.758 (–4.481 to 1.663)
SF-12 mental score-GIB 42.34 ± 5.45 48.80 ± 4.36 42.81 ± 3.73 > 0.999 (–3.213 to 2.287) > 0.999 (–2.403 to 1.471)
P valuea 0.413 (–1.643 to 3.947) 0.391 (–1.239 to 3.104) 0.808 (–1.552 to 1.974)

Values are presented as mean ± standard deviation.

NRS: numeric rating scale, CESI: caudal epidural steroid injection, GIB: ganglion impar block, SF-12: Short Form-12 Health Survey.

aIntergroup difference. bIntragroup difference, P values were given with 95% confidence interval (CI) of intergroup or intragroup difference.

Korean J Pain 2022;35:106~113 https://doi.org/10.3344/kjp.2022.35.1.106
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