year of observation
No. of states in system
Capability Concentration Index
Trade Interdependence Index
Alliance Polarization Index
Linguistic Polarization Index
Linguistic NPI lagged
Alliance NPI lagged
No. Dyads in the system
Proportion of dyads at war
Capability Concentration lagged
Trade Polarization Index
Religious Polarization Index
Trade NPI Lagged
(sum) nomids20
(sum) nowars20
Wayman Polarity Index
Mould Polarity Index
ATOP interdependence index
ATOP interdependence lagged
Avg. no. Cliques with dem. Regime
Pct. Dem-Dem clq. Int. Opps.
Avg. Pct. clqs with majority Dem-Dem Int. Opps
Religious NPI lagged