TABLE 2.

Effect of non-medical plus medical variables on low phosphorus levels.

	Variable	Significance p	RR	95% CI
Model 1	Education level	0.000
	Elementary	0.006	2.26	1.26	4.05
	High School	0.865	0.95	0.508	1.76
	Economic income
	Low	0.053	0.60	0.360	1.07
	Medium, high (reference)
Model 2	Education level	0.130
	Elementary	0.128	1.64	0.87	3.11
	High School	0.960	1.02	0.53	1.95
	Economic income
	Low	0.147	0.62	0.364	1.04
	Medium, high (reference)
	Diabetes	0.125	1.51	0.89	2.55
	Albumin (g/dL)	0.001	0.49	0.32	0.76
	Age	0.011	1.03	1.00	1.04

Model 1 Logistic regression analysis with education level and economic income. Model 2; Model 1 plus diabetes, albumin and age.