QoG code: qs20_close_pca
Closedness Index is constructed from Entry at the lowest level only, Entry via examination and Special Laws with the help of Principal Component Analysis (PCA). Entry at the lowest level only, Entry via examination and Special Laws variables are load on the same dimension, which predicted scores are used as Closedness Index.
| Dataset | No. Countries |
|---|---|
| Standard cross-section | 105 |
| OECD cross-section | 31 |
This variable has information from 2020 to 2020.