Author: Julian Nyarko

This codebook describes the variables in panel_data.csv, used in

   Nyarko, Julian, "Giving the Treaty a Purpose: Comparing the Durability of Treaties and Executive Agreements",
   113 American Journal of International Law (forthcoming, 2019)
   
The data can be downloaded at www.juliannyarko.com

country: The other party to the agreement
divided: Was the government divided when the agreement was concluded
event: Did the event (going out of force) occur during that observation year
expost: Is this an ex post congressional EA
id: Unique agreement identifier
ifyear: Year the agreement went in force
io: Is an international organizaton partner to this agreement
lppc: The lppc score when the agreement went into force
multi: Is this a multilateral agreement
obsyr: Year of observation
president: President when the agreement was signed
president_ifyear: President when the agreement went into force
pshsen: The president parties' share in the Senate when the agreement went into force
signyr: Year in which the agreement was signed
start: Start of the period of observation
stop: End of the period of observation
subject: Subject category of the agreement
tifyr: Year the agreement last appeared in TIF (2014 means right-censored)
tifyr_event: Year the agreement last appeared in TIF if it went out of force
time: Years the agreement was in force
time_event: Years the agreement was in force if it went out of force
treaty: Is this a treaty
treaty_number: What is the treaty number