Table 1.

Results from the principal component analysis (PCA)

Factor	Eigenvalue	Variance proportion	Cumulative variance proportion
Factor 1	2.20	0.20	0.20
Factor 2	1.07	0.10	0.30
Factor 3	1.06	0.10	0.40
Factor 4	1.01	0.09	0.49
Factor 5	0.97	0.09	0.57
Factor 6	0.94	0.09	0.66
Factor 7	0.85	0.08	0.74
Factor 8	0.82	0.07	0.81
Factor 9	0.76	0.07	0.88
Factor 10	0.71	0.06	0.94
Factor 11	0.62	0.06	1.00
Observed variable	Weight for factor 1 (economic status score)
Freezing as conservation	0.65
Education mother	0.58
Toilet supply	0.56
Electricity	0.53
House type	0.47
Education father	0.43
Income manage	0.43
Relative abroad	0.33
Water supply	0.27
Cooking	0.22
NHIS	0.15