. 2007 May 3;9(2):26.

Table 5.

Relation of Income Ratio to Childhood Overweight in Various NHANES Surveys

	NHANES Survey^a

	I	II	Hispanic	III	Continuous
Years	1971-1975	1976-1980	1982-1984	1988-1994	1999-2004
N
Whites	4779	5237	—-	2815	3144
Blacks	1657	1141	—-	3345	3577
Mexican-Americans	—-^b	—-^b	3212	3285	3688
Overweight (%)
Whites	5%	5%		10%	14%
Blacks	6%	8%		12%	19%
Mexican-Americans			9%	14%	20%
Median Income Ratio
Whites	2.2	2.2		2.5	2.6
Blacks	1.0	1.1		1.1	1.2
Mexican-Americans			1.3	1.1	1.2
OR (1-unit difference)^c
Whites	0.98	0.87		0.81^**	0.90^*
Blacks	1.01	1.42		1.04	1.05^*
Mexican-Americans			1.05	1.11	0.92
Race H income ratio interaction (P value)	.75	.02	—	.002	<.001

Each survey was independently designed, and there was no intended overlap in the samples.

Because of the small number of Mexican-Americans in NHANES I and II, they are excluded from the analyses.

The income ratio was treated as a continuous variable.

P < .05;

^**

P < .01