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