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Table 2 Outcome from before and after treatment for patients without medication overuse

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

Outcome

Patients (N)

Before treatment

Median (IQR)

After treatment

Median (IQR)

Change

Median (95 % CI)

P value

Headache days

215

26 (20, 30)

17 (11, 28)

−5 (−7, −4)

<0.001

Migraine days

215

14 (10, 20)

8 (4, 12)

−6 (−6, −4)

<0.001

Crystal clear days

215

4 (0, 10)

13 (3, 19)

5 (4, 7)

<0.001

Painkiller days

215

8 (2,10)

4 (0, 8)

−1 (−2, 0)

<0.001

Triptan days

215

2 (0, 5)

0 (0, 4)

0 (0, 0)

<0.001

Days off work

43

3 (3, 5)

1 (0, 3)

−2 (−3, −1)

<0.001