G&W and COW country code differences

Andreas Beger

2020-12-11

The COW and G&W state system lists generally have high overlap, but there are differences in states start and end dates, and also some differences in which numeric code is used for a particular states. Some notable code differences for post-WW2 states to look out for when trying to merge datasets with/from COW to G&W coding are:

Case G&W COW
Germany after 1990 unification continue 260 255
Yemen after 1990 unification continue 678 679
Serbia after 2006 dissolution of Serbia & Montenegro 340 continue 345
Kiribati 970 946
Nauru 971 970
Tuvalu 973 947
Tonga 972 955