Introduction – Patterns of Armed Conflict Since 1945

Book Chapter

Gleditsch, Nils Petter; Erik Melander & Henrik Urdal (2016) Introduction – Patterns of Armed Conflict Since 1945, in Mason, T. David; & Sara McLaughlin Mitchell, eds, What Do We Know About Civil War?. Lanham, MD: Rowman & Littlefield (15–32).

Download replication data
Publisher's Website

​Replication files in Excel for Figures 1–4 and 6–11 can be downloaded above. The figures in the printed book are in black and white, so a document with all the figures in color is included in the replication file archive.

W​​e regret an error in Figure 6 in the published article. The label on the vertical axis reads 'Battle deaths per 1000 inhabitants', but this should have been 'Battle deaths per 10 000 inhabitant​s'. This error has no consequences for the shape of the curve or for the comments in the text. The document with the color graphs contains the correct version of figure 1.6.

The full data on the number of conflicts and battle deaths are found at and at These pages also contain codebooks and detailed information on the collection of the data.

For information on the data used in Figure 5, see:

Hallberg, Johan Dittrich (2012) 'PRIO conflict site 1989–2008: A geo-referenced dataset on armed conflict', Conflict Management and Peace Science 29(2): 219–232.

What Do We Know about Civil Wars?

​​Since World War II, civil wars have replaced interstate wars as the most frequent and deadly form of armed conflict globally. A new book, What Do We Know about Civil Wars? is edited by T. David Mason & Sarah McLaughlin Mitchell, and has several contributions from present and former PRIO researchers, all connected to PRIO's Centre for the Study of Civil War (2002-2012).

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