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Table 2 Comparisons of headache intensity, headache days per month, and headache duration at baseline and during the COVID-19 pandemic

From: Overall trend towards headache remission during the COVID-19 pandemic among Chinese patients with pre-existing headache highlights the role of family support

variables

Before COVID-19

(n = 2806)

During COVID-19

(n = 2806)

P value

Headache severity

4.290 ± 1.680

4.110 ± 1.609

< 0.001

Headache duration (h)

4.033 ± 7.325

3.414 ± 6.859

< 0.001

Headache days per month

2.092 ± 3.694

1.788 ± 2.989

< 0.001