Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 Jul 6;21(1):85. doi: 10.1186/s10194-020-01154-x

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

PMC Copyright notice

Fig. 8 — Frequency of hospitalisations of patients with migraine in the German Company Sickness Fund Database by number of in-label preventive medications from different classes. Data are shown for all patients (overall) and patients grouped according to the number of restricted Group 1 (propranolol, metoprolol, flunarizine, topiramate and amitriptyline, but not onabotulinum toxin A or valproic acid) preventive medications from different classes prescribed during 2008–2016. n overall number of patients each year; patients were not required to be enrolled over the total study period (2008–2016), but were required to be continuously observable. For example, a person could enter the sample later than 2008 and leave it earlier than 2016