Research Article
Interpretability of Composite Indicators Based on Principal Components
Table 4
Correlations of input indicators in Cronbach’s alpha analysis.
| Pillar | Input ID | Inter-item correlations | Item-total correlations |
| Panel A: Uganda data set | ABS | 1 | 1.00 | | | | | –0.16 | 2 | –0.11 | 1.00 | | | | 0.18 | 5 | 0.01 | 0.05 | 1.00 | | | 0.38 | 6 | –0.10 | 0.08 | 0.00 | 1.00 | | 0.02 | 7 | 0.02 | 0.12 | 0.24 | 0.02 | 1.00 | 0.50 | AST | 1 | 1.00 | | | | | 0.57 | 2 | 0.37 | 1.00 | | | | 0.46 | 3 | 0.27 | 0.19 | 1.00 | | | 0.47 | 4 | 0.30 | 0.23 | 0.33 | 1.00 | | 0.51 | SSN | 1 | 1.00 | | | | | 0.65 | 2 | 0.20 | 1.00 | | | | 0.43 | 3 | –0.09 | –0.13 | 1.00 | | | –0.77 | 4 | 0.03 | –0.01 | –0.03 | 1.00 | | –0.02 | AC | 1 | 1.00 | | | | | 0.55 | 2 | 0.19 | 1.00 | | | | 0.36 | 4 | 0.11 | –0.01 | 1.00 | | | 0.16 | 5 | 0.17 | 0.05 | 0.15 | 1.00 | | 0.29 | 6 | –0.13 | 0.00 | –0.18 | –0.24 | 1.00 | –0.61 |
| Panel B: Chad data set | ABS | 1 | 1.00 | 0.11 | 0.10 | 0.04 | 0.13 | 0.41 | 2 | 0.11 | 1.00 | 0.04 | 0.03 | –0.10 | 0.10 | 3 | 0.10 | 0.04 | 1.00 | 0.05 | 0.01 | 0.20 | 4 | 0.04 | 0.03 | 0.05 | 1.00 | 0.05 | 0.17 | 8 | 0.13 | –0.10 | 0.01 | 0.05 | 1.00 | 0.12 | AST | 1 | 1.00 | 0.41 | 0.27 | 0.02 | | 0.66 | 2 | 0.41 | 1.00 | 0.01 | 0.10 | | 0.49 | 3 | 0.27 | 0.01 | 1.00 | –0.03 | | 0.24 | 4 | 0.02 | 0.10 | –0.03 | 1.00 | | 0.08 | SSN | 2 | 1.00 | 0.03 | 0.12 | | | 0.62 | 3 | 0.03 | 1.00 | 0.07 | | | 0.59 | 5 | 0.12 | 0.07 | 1.00 | | | 0.64 | AC | 2 | 1.00 | –0.02 | 0.02 | | | 0.06 | 3 | –0.02 | 1.00 | –0.01 | | | –0.18 | 4 | 0.02 | –0.01 | 1.00 | | | 0.23 |
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