List of Interstate War Dyads by Gleditsch, extended until 2004. Described fully in Gleditsch, Kristian. 2004. "A Revised List of Wars Between and Within Independent States, 1816-2002." International Interactions 30 (3): 231-62. http://privatewww.essex.ac.uk/~ksg/expwar.html.

interstate_dyads_yearly

Format

An object of class tbl_df (inherits from tbl, data.frame) with 1176 rows and 28 columns.

Variable descriptions

warid
War ID. Character with 137 distinct values. Most common: EIW2.1-450-IW-106 (162), EIW2.1-535-IW-139 (367), EIW2.1-565-IW-151 (98). NAs = 0.

GWn.x
Gleditsch-Ward numeric country code for side A. See Gleditsch and Ward (1999). Numeric. Max = 920, min = 2, distinct = 75, mean = 401.998, sd = 276.722, NAs = 0.

sdate.x
Date country A entered the war. Date. Max = 2003-03-19, min = 1816-08-26, distinct = 201, NAs = 0.

edate.x
Date country A exited the war. Date. Max = 2003-05-02, min = 1816-08-30, distinct = 158, NAs = 0.

year
Year. Numeric. Max = 2003, min = 1816, distinct = 160, mean = 1924.744, sd = 40.772, NAs = 0.

warname
War name. Character with 137 distinct values. Most common: Korean (98), World War I (162), World War II (367). NAs = 0.

GWc.x
Gleditsch-Ward alphabetic country code for side A. See Gleditsch and Ward (1999). Character with 75 distinct values. Most common: DRV (83), FRN (89), UKG (117). NAs = 0.

newcow
newcow Character with 136 distinct values. Most common: IW-106 (162), IW-139 (367), IW-151 (98). NAs = 1.

cow94
cow94 Character with 102 distinct values. Most common: IW-106 (162), IW-139 (367), IW-151 (98). NAs = 145.

cow00
cow00 Character with 108 distinct values. Most common: IS-106 (162), IS-139 (367), IS-151 (98). NAs = 120.

oldwid
oldwid Numeric. Max = 700, min = 105, distinct = 117, mean = 475.967, sd = 131.496, NAs = 95.

deaths.x
Estimated deaths for side A. Numeric. Max = 7500000, min = 0, distinct = 132, mean = 403770.914, sd = 1283219.988, NAs = 4.

outcome.x
Outcome of the war for side A. 1 = on the winning side, 2 = on the losing side, 3 = compromise/tie, 4 = war transformed into another type, 6 = stalemate, 8 = party changed sides. Numeric. Max = 8, min = 1, distinct = 6, mean = 1.742, sd = 1.659, NAs = 0.

outcome_chr.x
Outcome of the war for side A, in character form. Character with 6 distinct values. Most common: 1 = on winning side (951), 4 = war transformed into another type (61), 6 = stalemate (125). NAs = 0.

country_name.x
Standardized country name for country A. Character with 75 distinct values. Most common: France (89), United Kingdom (117), Vietnam, Democratic Republic of (83). NAs = 0.

type
Type of war. Character with 1 distinct values. Most common: Interstate (1176). NAs = 0.

initiate.x
Did country A initiate the war? 1 = initiated, 2 = did not initiate. Numeric. Max = 2, min = 1, distinct = 2, mean = 1.77, sd = 0.421, NAs = 0.

initiate_chr.x
Character version of initiate.x. Character with 2 distinct values. Most common: Did not initiate war (906), Initiated war (270). NAs = 0.

GWn.y
Gleditsch-Ward numeric country code for side B. See Gleditsch and Ward (1999). Numeric. Max = 900, min = 2, distinct = 80, mean = 458.91, sd = 225.551, NAs = 0.

sdate.y
Date country B entered the war. Date. Max = 2003-03-19, min = 1816-08-26, distinct = 167, NAs = 0.

edate.y
Date country B exited the war. Date. Max = 2003-05-02, min = 1816-08-30, distinct = 162, NAs = 0.

GWc.y
Gleditsch-Ward alphabetic country code for side B. See Gleditsch and Ward (1999). Character with 80 distinct values. Most common: BUL (82), CHN (84), GMY (118). NAs = 0.

deaths.y
Estimated deaths for side B. Numeric. Max = 3500000, min = 23, distinct = 92, mean = 506759.191, sd = 931805.559, NAs = 31.

outcome.y
Outcome of the war for side B. 1 = on the winning side, 2 = on the losing side, 3 = compromise/tie, 4 = war transformed into another type, 6 = stalemate, 8 = party changed sides. Numeric. Max = 6, min = 1, distinct = 5, mean = 2.505, sd = 1.288, NAs = 0.

outcome_chr.y
Outcome of the war for side B, in character form. Character with 5 distinct values. Most common: 2 = on losing side (956), 4 = war transformed into another type (61), 6 = stalemate (123). NAs = 0.

country_name.y
Standardized country name for country B. Character with 80 distinct values. Most common: Bulgaria (82), China (84), Germany (Prussia) (118). NAs = 0.

initiate.y
Did country A initiate the war? 1 = initiated, 2 = did not initiate. Numeric. Max = 2, min = 1, distinct = 2, mean = 1.716, sd = 0.451, NAs = 0.

initiate_chr.y
Character version of initiate.y. Character with 2 distinct values. Most common: Did not initiate war (842), Initiated war (334). NAs = 0.

References

Gleditsch, Kristian S. & Michael D. Ward. 1999. "Interstate System Membership: A Revised List of the Independent States since 1816." International Interactions 25: 393-413. The list can be found at http://privatewww.essex.ac.uk/~ksg/statelist.html

Gleditsch, Kristian. 2004. "A Revised List of Wars Between and Within Independent States, 1816-2002." International Interactions 30 (3): 231-62. http://privatewww.essex.ac.uk/~ksg/expwar.html.