Supplemental Material:

Jepson, W., Tomaz, P., & Texas Water Insecurity Experiences Consortium. 2023. Development and Validation of a Household Water Insecurity Scale for Northeast Brazil. Journal of Latin American Geography 22(1).Appendix

Appendix

Statistical Tests

Statistical Tests on Dataset for Scale Development

Tests	Recall Period
	Four weeks	Four months
Robust mean and variance-adjusted chi square	39.946, gl = 24; p = 0.021	17.153, gl = 16; p = 0.384
RMSEA	0.022 (IC = 0.0007 – 0.0310)	0,007 (IC = 0.0018 – 0.0165)
CFI	0.999 (IC = 0.999 – 1.000)	1.000 (IC = 1.000 – 1.001)
TLI	0.998 (IC = 0.996 – 1.001)	1.000 (IC = 0.999 – 1.002)
RMSR	0.026 (IC = 0.018 – 0.031)	0.011(IC = 0.008 – 0.012)

Note: 95% confidence interval for all tests.

Statistical Confidence Tests Used in the Generated Models

Confidence tests
	Models	Factor 01	Factor 02	Factor 03	Factor 04
Cronbach alpha	Model 1	0.68	0.54	0.75	—
	Model 2	0.71	0.71	0.80	0.65
Composite reliability	Model 1	0.544	0.586	0.772	—
	Model 2	0.634	0.556	0.655	0.633
H-latent	Model 1	0.998	0.850	0.989	—
	Model 2	0.957	0.983	0.973	0.900

Convergent Validity for the HWISE-NEB Scale

	Model 1		Model 2
Coefficient (95% CL)	R2	Coefficient (95% CL)	R2
Food insecurity	0.36 (0.31 – 0.42) *	.324***	0.26 (0.22 – 0.30)*	.325***
Water Borrowing	3.74 (3.21 – 4.28) *	.368***	4.84 (4.23 – 5.45)*	.405***

t-test  – p<0.001; ^***p<0.001