Table 3.

Distributions of the Study Population by Demographic Characteristics and BACK PAIN, Univariate Odds Ratios

	Demographic Characteristics	% in study pop	% with BACK PAIN	Odds Ratio	95% Conf.	P
BACK PAIN			25.9
Age
	18 – 25	10.6	28.2
	26 – 40	36.1	26.7	0.93	(0.77,1.12)
	41 – 55	35.2	25.7	0.88	(0.73,1.06)
	56 – 64	12.7	24.0	0.81	(0.64,1.01)	**
	65+	5.4	21.6	0.70	(0.53,0.95)	*
Sex
	Male	49.5	25.3	1.00
	Female	50.5	26.4	1.06	(0.95,1.18)
Ethnicity and race
	Non-Hispanic White	68.1	26.7	1.00
	Non-Hispanic Black	14.3	20.9	0.72	(0.61,0.86)
	Hispanic	13.7	27.7	1.05	(0.89,1.25)
	Non-Hispanic Others	4.1	24.6	0.90	(0.68,1.19)
Education
	Less than high school	10.3	36.0	2.43	(1.95,3.04)	**
	High school	25.5	28.2	1.70	(1.40,2.05)	**
	Some college	29.9	27.8	1.66	(1.38,2.00)	**
	College	18.9	20.1	1.09	(0.88,1.34)
	Master and above	15.5	18.8
Earning
	<  $15,000	23.7	31.3	2.11	(1.62,2.75)	**
	$15,000 - $24,999	19.3	26.6	1.68	(1.28,2.21)	**
	$25,000 - $34,999	15.7	25.7	1.61	(1.21,2.13)	*
	$35,000 - $49,999	19.2	26.0	1.63	(1.24,2.15)	**
	$50,000 - $74,999	13.3	23.6	1.43	(1.07,1.92)	*
	> =$75,000	8.9	17.7	1.00

^*<=0.05

^**<=0.001