igo_year_format3: Intergovernmental organizations by year

In igoR: Access the Intergovernmental Organizations Database

Intergovernmental organizations by year

Description

Data on IGOs from 1815 to 2014 at the IGO-year level. Contains one record per IGO-year, with years listed at five-year intervals through 1965 and annually thereafter.

Format

data.frame with 19,335 rows. Relevant fields:

• ioname: Short abbreviation of the IGO name.

• orgname: Full IGO name.

• year: Calendar year.

• afghanistan...zimbabwe: Status of that state in the IGO. See Details.

• sdate: Start year for the IGO.

• deaddate: End year for the IGO.

• longorgname: Longer version of the IGO name, including previous names.

• ionum: IGO ID number in v2.1 and v3.0 of the data.

• version: COW version number.

See Codebook Version 3 IGO Data for full reference.

Details

Possible values for the status of a state in the IGO are:

Category	Numerical Value
No Membership	0
Full Membership	1
Associate Membership	2
Observer	3
Missing data	-9
State Not System Member	-1

See the igo_recode_igoyear() section for an easy way to recode the numerical values into factors.

Note

Raw data used internally by igoR.

Source

Intergovernmental Organizations (v3), The Correlates of War Project (IGO Data Stata Files).

References

Pevehouse, J. C., Nordstrom, T., McManus, R. W., & Jamison, A. S. (2020). Tracking organizations in the world: The Correlates of War IGO Version 3.0 data sets. Journal of Peace Research, 57(3), 492–503. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1177/0022343319881175")}.

See Also

Other datasets: igo_recode_igoyear(), state_year_format3, states2016

Examples

data("state_year_format3")

# Show a glimpse.
library(dplyr)

state_year_format3 %>%
  select(ccode:afgec) %>%
  filter(year > 1990) %>%
  glimpse()

# Recode numerical values to factors with a sample.
sample_state_year <- state_year_format3 %>%
  as_tibble() %>%
  select(ccode:afgec) %>%
  filter(year == 1990)

sample_state_year %>% glimpse()

# Recode.
sample_state_year_recoded <- sample_state_year %>%
  mutate(across(-c(ccode:state), igo_recode_stateyear))

sample_state_year_recoded %>% glimpse()

igoR documentation built on May 23, 2026, 5:08 p.m.