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Table 2 Migraine frequency of both migraine groups for all measurement points

From: Progressive muscle relaxation reduces migraine frequency and normalizes amplitudes of contingent negative variation (CNV)

   n Number of migraine attacks Number of days with migraine
M SD M SD
1 (pre) PMR 16 3.81 1.8 5.5 2.77
Waiting-list 19 3.47 1.61 5.79 2.3
2 (post) PMR 16 2.88 1.41 3.88 2.28
Waiting-list 19 3.32 1.77 5.53 3.1
3 (follow-up) PMR 16 2.25 1.34 3.13 1.93
Waiting-list 19 3.53 1.98 5.26 2.2
  1. n number of patients, M mean value, SD standard deviation