Table 4.

Results of standardization robustness analysis

Path	CRSE				Bootstrap
	Coefficients	CRSE	95%CI	P	Coefficients	SE	Bootstrap(95%CI)	P
Male
Factor 1b → Factor 2b	0.081	0.06	[-0.035 to 0.198]	0.172	0.110	0.05	[0.010 to 0.206]	0.029
Factor 2b → poor vision	-0.191	0.10	[-0.382 to -0.001]	0.049	-0.245	0.06	[-0.362 to -0.126]	< 0.001
Female
Factor 1b → Factor 2b	0.204	0.05	[0.100 to 0.308]	< 0.001	0.219	0.05	[0.122 to 0.313]	< 0.001
Factor 1b → poor vision	0.178	0.07	[0.035 to 0.295]	0.013	0.165	0.07	[0.027 to 0.300]	0.016

Abbreviations: CRSE Cluster robust standard errors