“The UCDP Dyadic dataset builds on the UCDP/PRIO Armed Conflict dataset, but goes beyond the conflict level and focuses on dyads within each conflict. As such, it constitutes a disaggregated version of the UCDP/PRIO Armed Conflict dataset. It is compatible with a range of other datasets, both provided by UCDP and by PRIO (International Peace Research Institute, Oslo).” (codebook, p. 3)
I/ Conflict variable
I/1/ Unit of conflict
| Event (< 0 or 1 death) | Conflict (< 25 deaths) | War (< 100 deaths) | Episode (< 500 deaths) |
|---|---|---|---|
| ∅ | X | ∅ | ∅ |
I/2/ Conflict domain
| State-based conflict | Non-state conflict | One-sided violence | TO BE DETERMINED |
|---|---|---|---|
| X | ∅ | X | ∅ |
One of the following four types of conflict that the dyad is active in:
1 = extrasystemic (between a state and a non-state group outside its own territory, where the government side is fighting to retain control of a territory outside the state system).
2 = interstate (both sides are states in the Gleditsch and Ward membership system).
3 = intrastate (side A is always a government; side B is always a rebel group; there is no involvement of foreign governments with troops, i.e. there is no side_a_2nd or side_b_2nd coded).
4 = internationalized intrastate (side A is always a government; side B is always a rebel group; there is involvement of foreign governments with troops, i.e. there is at least ONE side_a_2nd or side_b_2nd coded).” (codebook, p. 9)
II/ Time variable
II/1/ Unit of time
| Day | Year |
|---|---|
| X | ∅ |
The date, as precise as possible, of the first battle-related death in the dyad.
The date is set after the dyad fulfils all criteria required in the definition of an armed conflict, except for the number of deaths.[…]
Date (YYYY-MM-DD)” (codebook, p. 9)
II/2/ Time domain
| Time domain |
|---|
| 31/03/1939 – 2021 |
The year of observation (1946-2021).” (codebook, p. 8)
(ucdp-dyadic-221.xlsx, 18/05/2022)
III/ Space variable
III/1/ Unit of space
| Coordinates | Country | Region | TO BE DETERMINED |
|---|---|---|---|
| ∅ | X | ∅ | ∅ |
The name of the country/countries whose government(s) has a primary claim to the incompatibility. Note that this is not necessarily the geographical location of the conflict.” (codebook, p. 7)
III/2/ Space domain
| Global | Mediterranean Sea and Sahel | TO BE DETERMINED |
|---|---|---|
| X | ∅ | ∅ |
The region of the incompatibility:
1 = Europe (GWNo: 200-399)
2= Middle East (GWNo: 630-699)
3= Asia (GWNo: 700-999)
4= Africa (GWNo: 400-626)
5= Americas (GWNo: 2-199).” (codebook, p. 10)
IV/ Data structure
IV/1/ Unit of observation
| Unit of conflict (UC) | UC-year | UC-actor | Country-year |
|---|---|---|---|
| ∅ | X | ∅ | ∅ |
| Actor-year | Dyad-year | OTHER | TO BE DETERMINED |
|---|---|---|---|
| ∅ | ∅ | ∅ | ∅ |
(ucdp-dyadic-221.xlsx, 18/05/2022)
IV/2/ Number of observations
| Number of observation |
|---|
| 3 217 |
(ucdp-dyadic-221.xlsx, 18/05/2022)
V/ All variables
| Conflict name | Conflict type | Intensity |
|---|---|---|
| X | X | X |
| Outcome | Time | Space |
|---|---|---|
| ∅ | X | X |
| Actor | Type of actor | Dyad |
|---|---|---|
| X | ∅ | X |
| Coalition | Deaths | Non-conflit variables |
|---|---|---|
| X | ∅ | ∅ |
The unique identifier of the conflict to which the dyad corresponds, as given in the UCDP/PRIO Armed Conflict Dataset version 22.1″ (codebook, p. 7)
“type_of_conflict
One of the following four types of conflict that the dyad is active in:
1 = extrasystemic (between a state and a non-state group outside its own territory, where the government side is fighting to retain control of a territory outside the state system).
2 = interstate (both sides are states in the Gleditsch and Ward membership system).
3 = intrastate (side A is always a government; side B is always a rebel group; there is no involvement of foreign governments with troops, i.e. there is no side_a_2nd or side_b_2nd coded).
4 = internationalized intrastate (side A is always a government; side B is always a rebel group; there is involvement of foreign governments with troops, i.e. there is at least ONE side_a_2nd or side_b_2nd coded).” (codebook, p. 9)
“intensity_level
The intensity level in the dyad per calendar year. The intensity variable is coded in two categories:5
1= Minor: between 25 and 999 battle-related deaths in a given year.
2= War: at least 1,000 battle-related deaths in a given year.” (codebook, p. 8)
“start_date
The date, as precise as possible, of the first battle-related death in the dyad.
The date is set after the dyad fulfils all criteria required in the definition of an armed conflict, except for the number of deaths.” (codebook, p. 9)
“location
The name of the country/countries whose government(s) has a primary claim to the incompatibility. Note that this is not necessarily the geographical location of the conflict.” (codebook, p. 7)
“side_a
The name of the country/countries of Side A in a conflict. Always the government side in intrastate conflicts. Note that this is a primary party to the conflict.” (codebook, p. 7)
“dyad_id
The unique identifier of the dyad.” (codebook, p. 7)
“side_a_2nd
side_a_2nd lists all states that enter a conflict dyad with troops to actively support side A. By definition, only independent states can be a secondary party in conflict.” (codebook, p. 7)
VI/ Transparency
VI/1/ Sources
| Intergovernmental organizations | Governmental organizations | Non-governmental organizations |
|---|---|---|
| ∅ | ∅ | ∅ |
| Research organizations | Press media | Social media |
|---|---|---|
| ∅ | ∅ | ∅ |
| Other databases | OTHER | TO BE DETERMINED |
|---|---|---|
| ∅ | ∅ | X |
VI/2/ Codebook
| Date | Version |
|---|---|
| 2022 | 22.1 |
VII/ Update
VII/1/ Current version
| Date | Version |
|---|---|
| 2022 | 22.1 |
The version number is a combination of a year and a number. The year refers to when the dataset is updated with new observations. If there are changes in the data between yearly updates, or if there are substantial changes in the structure of the dataset, the number behind the year is incremented.” (codebook, p. 13)
VII/2/ Regularly updated ?
| Real-time | Month | Quarter | Annually |
|---|---|---|---|
| ∅ | ∅ | ∅ | X |
| YES, PERIOD TO BE DETERMINED | TO BE DETERMINED |
|---|---|
| ∅ | ∅ |
VIII/ Access
VIII/1/ Registration ?
| YES | NO |
|---|---|
| ∅ | X |
VIII/2/ Formats
| .XLS/.XLSX | .CSV | .DTA (STATA) | .RDTA |
|---|---|---|---|
| X | X | X | X |
VIII/3/ API ?
| YES | NO | TO BE DETERMINED |
|---|---|---|
| ∅ | ∅ | X |