[CSP] Major Episodes of Political Violence (MEPV) and Conflict Regions (v. 2018) (not Full Set)

By /

“Center for Systemic Peace, Major Episodes of Political Violence, 1946-2018 (War List),
[A/] Annual Set lists annual, cross-national, time-series data on interstate, societal, and communal warfare magnitude scores (independence, interstate, ethnic, and civil; violence and warfare) for all countries;
[B/] Full Set (1946-2012) includes both country data and scores for neighboring countries and regional context for all independent countries (does not include independence wars).” (https://www.systemicpeace.org/inscrdata.html, 23/09/2023)

MEPVcodebook2018

I/ Conflict variable
I/1/ Unit of conflict

Event (< 0 or 1 death)Conflict (< 25 deaths)War (< 100 deaths)Episode (< 500 deaths)
∅∅∅X
“Major episodes of political violence are defined by the systematic and sustained use of lethal violence by organized groups that result in at least 500 directly-related deaths over the course of the episode.” (codebook, p. 2)

I/2/ Conflict domain

State-based conflictNon-state conflictOne-sided violenceTO BE DETERMINED
∅∅∅X
“Episodes are coded for time span and magnitude and assigned to one of seven categories of armed conflict: international violence (IV), international war (IW), international independence war (IN), civil violence (CV), civil war (CW), ethnic violence (EV), and ethnic war (EW).” (codebook, p. 2)

II/ Time variable
II/1/ Unit of time

DayYear
∅X
“YEAR (4-numeric)
Year” (codebook, p. 1)

II/2/ Time domain

Time domain
1946 – 2018
“MAJOR EPISODES OF POLITICAL VIOLENCE (MEPV) AND CONFLICT REGIONS, 1946-2018” (codebook, p. 1)

III/ Space variable
III/1/ Unit of space

CoordinatesCountryRegionTO BE DETERMINED
∅X∅∅
“COUNTRY (x-alpha)
INSCR standard country name” (codebook, p. 1)

III/2/ Space domain

GlobalMediterranean Sea and SahelTO BE DETERMINED
X∅∅
“REGION (2-numeric)
Code designation for affective geopolitical region, as follows (see addendum):
0….European (East/West) 5….Middle East
1….West Africa 6….South-central Asia
2….North Africa 7….East Asia
3….East Africa 8….South America
4….South Africa 9….Central America” (codebook, p. 6)

IV/ Data structure
IV/1/ Unit of observation

Unit of conflict (UC)UC-yearUC-actorCountry-year
∅∅∅X
Actor-yearDyad-yearOTHERTO BE DETERMINED
∅∅∅∅
“The episode’s ‘magnitude of impact’ score is entered for each year of the designated time span and for each country considered to have been directly affected by the warfare experience. […]
The global system comprises a basically unchanging configuration of territorial units, termed countries or states (i.e., the state system).” (codebook, pp. 2-3)

(MEPVv2018.xls, 23/08/2022)

IV/2/ Number of observations

Number of observation
10 059

(MEPVv2018.xls, 23/08/2022)

V/ All variables

Conflict nameConflict typeIntensity
∅XX
OutcomeTimeSpace
∅XX
ActorType of actorDyad
∅∅∅
CoalitionDeathsNon-conflit variables
∅∅∅
“INTVIOL (2-numeric)
Magnitude score of episode(s) of international violence involving that state in that year
involving that state in that year
Scale: 1 (lowest) to 10 (highest) for each MEPV; Magnitude scores for multiple MEPV are summed;
0 denotes no episodes
INTWAR (2-numeric)
Magnitude score of episode(s) of international warfare involving that state in that year […]
CIVVIOL (2-numeric)
Magnitude score of episode(s) of civil violence involving that state in that year […]
CIVWAR (2-numeric)
Magnitude score of episode(s) of civil warfare involving that state in that year […]
ETHVIOL (2-numeric)
Magnitude score of episode(s) of ethnic violence involving that state in that year […]
ETHWAR (2-numeric)
Magnitude score of episode(s) of ethnic warfare involving that state in that year […]
INTTOT (2-numeric)
Total summed magnitudes of all interstate MEPV
INTTOT = INTVIOL + INTWAR
CIVTOT (2-numeric)
Total summed magnitudes of all societal MEPV
CIVTOT = CIVVIOL + CIVWAR + ETHVIOL + ETHWAR
ACTOTAL (2-numeric)
Total summed magnitudes of all (societal and interstate) MEPV
ACTOTAL = INTTOT + CIVTOT” (codebook, pp. 3-4)
“YEAR (4-numeric)
Year” (codebook, p. 1)
“COUNTRY (x-alpha)
INSCR standard country name” (codebook, p. 1)

VI/ Transparency
VI/1/ Sources

Intergovernmental organizationsGovernmental organizationsNon-governmental organizations
∅∅∅
Research organizationsPress mediaSocial media
∅∅∅
Other databasesOTHERTO BE DETERMINED
∅∅X

VI/2/ Codebook

DateVersion
25/07/2019TO BE DETERMINED
“July 25, 2019” (codebook, p. 1)

MEPVcodebook2018-1

VII/ Update
VII/1/ Current version

DateVersion
2018[2018]

(MEPVv2018.xls, 23/08/2022)

VII/2/ Regularly updated ?

Real-timeMonthQuarterAnnually
∅∅∅∅
YES, PERIOD TO BE DETERMINEDTO BE DETERMINED
X∅
“Variables in this section were taken from the list of Center for Systemic Peace (CSP) Major Episodes of Political Violence, 1946-2018, URL: www.systemicpeace.org/warlist.htm. That comprehensive list of all types of major armed conflict episodes is a regularly updated version of Appendix C in Monty G. Marshall, Third World War, (Lanham, MD: Rowman & Littlefield, 1999) and further detailed in Monty G. Marshall, ‘Measuring the Societal Impact of War,’ in F. O. Hampson and D. M. Malone, eds., From Reaction to Prevention (Boulder: Lynne Rienner, 2002).” (codebook, p. 1)

VIII/ Access
VIII/1/ Registration ?

YESNO
∅X

VIII/2/ Formats

.XLS/.XLSX.CSV.DTA (STATA).RDTA
X∅∅∅

(https://www.systemicpeace.org/inscrdata.html, 23/09/2023)

VIII/3/ API ?

YESNOTO BE DETERMINED
∅∅X