Polity 2 Index from Polity IV. 2013. Taken from D. Pemstein, S. A. Meserve, and J. Melton. Replication Data for: Democratic Compromise: A Latent Variable Analysis of Ten Measures of Regime Type. 2013. DOI: 10.7910/DVN/WWYOHU. Higher values are more democratic. Use polityIV for the latest version of the Polity IV data or download_polity_annual to download the Polity 5 revision.
Source
D. Pemstein, S. A. Meserve, and J. Melton. Replication Data for: Democratic Compromise: A Latent Variable Analysis of Ten Measures of Regime Type. 2013. DOI: 10.7910/DVN/WWYOHU.
M. G. Marshall, T. R. Gurr, and K. Jaggers. Polity IV Project: Political Regime Characteristics and Transitions, 1800-2018. Dataset Users' Manual. Manual. 2019.
Variables
- pmm_country
The original country name in the PMM replication data.
- year
The calendar year.
- polity_pmm
Annual polity2 index, interpolating values for interruption, interregnum, and transition periods. Higher values are more democratic. Taken from D. Pemstein, S. A. Meserve, and J. Melton. Replication Data for: Democratic Compromise: A Latent Variable Analysis of Ten Measures of Regime Type. 2013. DOI: 10.7910/DVN/WWYOHU. In this version the indicator only goes to 1945, and it differs from polity2 in a few cases:
polity_pmm |> dplyr::left_join(polityIV) |> dplyr::filter(pmm_polity != polity2) |> dplyr::select(pmm_country, year, pmm_polity, polity2) |> dplyr::group_by(pmm_country, pmm_polity, polity2) |> dplyr::summarise(min_year = min(year), max_year = max(year), n_years = dplyr::n()) #> Joining with `by = join_by(year, extended_country_name, GWn, cown, #> in_GW_system)` #> # A tibble: 17 x 6 #> # Groups: pmm_country, pmm_polity [17] #> pmm_country pmm_polity polity2 min_year max_year n_years #> <chr> <int> <dbl> <dbl> <dbl> <int> #> 1 Bhutan -6 -5 2005 2007 3 #> 2 Czech Republic 8 9 2006 2008 3 #> 3 Czechoslovakia -1 2 1947 1947 1 #> 4 Equatorial Guinea -5 -6 1996 2008 13 #> 5 Ethiopia 0 1 1993 1993 1 #> 6 Ethiopia 1 -3 2005 2008 4 #> 7 Israel 9 6 1981 1998 18 #> 8 Israel 10 6 1999 2008 10 #> 9 Korea North -9 -10 1994 2008 15 #> 10 Lebanon 7 6 2005 2008 4 #> 11 Moldova 8 9 2005 2008 4 #> 12 Montenegro 8 9 2008 2008 1 #> 13 Mozambique 6 5 1994 2008 15 #> 14 Myanmar (Burma) -8 -6 2008 2008 1 #> 15 Senegal 8 7 2007 2008 2 #> 16 United States 10 8 1967 1973 7 #> 17 Yugoslavia (Serbia) 6 8 2006 2006 1
Standard descriptive variables (generated by this package)
- extended_country_name
The name of the country in the Gleditsch-Ward system of states, or the official name of the entity (for non-sovereign entities and states not in the Gleditsch and Ward system of states) or else a common name for disputed cases that do not have an official name (e.g., Western Sahara, Hyderabad). The Gleditsch and Ward scheme sometimes indicates the common name of the country and (in parentheses) the name of an earlier incarnation of the state: thus, they have Germany (Prussia), Russia (Soviet Union), Madagascar (Malagasy), etc. For details, see 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.
- GWn
Gleditsch and Ward's numeric country code, from the Gleditsch and Ward list of independent states.
- cown
The Correlates of War numeric country code, 2016 version. This differs from Gleditsch and Ward's numeric country code in a few cases. See http://www.correlatesofwar.org/data-sets/state-system-membership for the full list.
- in_GW_system
Whether the state is "in system" (that is, is independent and sovereign), according to Gleditsch and Ward, for this particular date. Matches at the end of the year; so, for example South Vietnam 1975 is
FALSEbecause, according to Gleditsch and Ward, the country ended on April 1975 (being absorbed by North Vietnam). It is alsoTRUEfor dates beyond 2012 for countries that did not end by then, depsite the fact that the Gleditsch and Ward list has not been updated since.
See also
Other democracy:
LIED,
PIPE,
REIGN,
anckar,
anrr,
arat_pmm,
blm,
bmr,
bnr,
bollen_pmm,
bti,
doorenspleet,
download_fh(),
download_fh_electoral(),
download_fh_full(),
download_wgi_voice_and_accountability(),
eiu,
extended_uds,
fh_pmm,
gwf_all,
hadenius_pmm,
kailitz,
magaloni,
mainwaring,
munck_pmm,
pacl,
pacl_update,
peps,
pitf,
polityIV,
polyarchy,
polyarchy_dimensions,
prc_gasiorowski,
svmdi,
svolik_regime,
uds_2014,
ulfelder,
utip,
vanhanen,
vaporeg,
vdem_simple,
wahman_teorell_hadenius
Other PMM replication data:
arat_pmm,
blm,
bollen_pmm,
fh_pmm,
hadenius_pmm,
mainwaring,
munck_pmm,
pacl,
prc_gasiorowski
Other ordinal democracy indexes:
download_fh(),
download_fh_electoral(),
download_fh_full(),
fh_pmm,
polityIV