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Table 4 Comparison of the treatment outcome measures in CM patients with or without medication overuse

From: Does analgesic overuse matter? Response to OnabotulinumtoxinA in patients with chronic migraine with or without medication overuse

Outcome

WMO

MO

P value

Patients (N)

Median (95 % CI)

Patients (N)

Median (95 % CI)

Headache days

215

−5 (−7, −4)

219

−7 (−8, −5)

0.15

Migraine days

215

−6 (−6, −4)

219

−6 (−7, −5)

0.58

Crystal clear days

215

5 (4, 7)

219

7 (5, 8)

0.15

Painkiller days

215

−1 (−2, 0)

219

−8 (−9, −6)

<0.001

Triptan days

215

0 (0, 0)

219

0 (−1, 0)

<0.001

Days off work

43

−2 (−3, −1)

14

−2 (−5, 0)

0.95