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Table 2 Comparison between control group and TPE group regarding QMG and QOL score at initial, after 1 month, and percentage change

From: Determinants of quality of life changes with plasmapheresis in patients with myasthenia gravis

  Control group TPE group Test value P value Sig.
No.= 17 No.= 81
Initial QMG score Mean ± SD
Range
24.12 ± 2.00 25.64 ± 3.95 −1.547a 0.125 NS
QMG score after 1 month Mean ± SD
Range
21-27 18-34 7.818a 0.001 HS
QMG change Median (IQR)
Range
26.35 ± 3.20 18.05 ± 4.12 −6.404b 0.001 HS
Initial QOL score Mean ± SD 43.06 ± 2.66 46.47 ± 4.86 −2.797a 0.006 HS
Range 38-47 36-57
QOL score after 1 month Mean ± SD 46.12 ± 4.31 38.36 ± 6.69 4.579a 0.0001 HS
Range 38-52 25-54
QOL change Median (IQR) 4.76 (0-13.95) −15.38 (−27.08-−9.09) −6.091b 0.0001 HS
Range −5-23.81 −50-8.16
  1. NS non-significant, S significant, HS highly significant, TPE therapeutic plasmapheresis, SD standard deviation, QOL quality of life
  2. aIndependent t test
  3. bMann-Whitney test