The Association of Unreported Sleep Disturbances and Systemic Inflammation: Findings from the 2005-2008 NHANES

Table 5

Frequencies and weighted percentage comparison between analysis sample and missing cases.

	Analysis Sample		Missing Cases
Variable	Unweighted Frequency	Weighted percent	Unweighted Frequency	Weighted percent	Chi square	p value
N	9,901		1,216
Gender
Female	4,894	50.96	629	51.40	0.05	0.856
Male	5,007	49.04	587	48.60
Race/Ethnicity
NH white	4,697	71.22	490	61.09	76.33	<0.001
NH black	2,159	10.85	361	21.75
Mexican	1,901	8.19	212	7.02
Other Hispanic	755	4.24	95	4.11
Other race	389	5.50	58	6.03
Age
18-44	4,526	48.23	628	62.60	58.43	<0.001
45-64	3,084	35.45	266	22.49
65 plus	2,291	16.32	322	14.92
Sleep categories
Sleep apnea	411	4.56	37	2.37	14.55	0.019
Other sleep disorder	293	2.80	47	3.81
Reported sleep disturbance	1,596	18.30	174	15.45
Unreported sleep disturbance	1,167	11.19	133	10.51
No sleep problems	6,434	63.15	825	67.87
Obesity
Not obese	6,454	66.73	467	66.52	0.01	0.916
Obese	3,447	33.27	245	33.48
Average Hours of sleep
Less than 7	3,831	36.72	478	39.04	17.24	0.005
7-8 hours	5,303	56.45	612	50.45
9 or more hours	767	6.83	124	10.51
Comorbidity scale - Mean (SD)	9,901	0.86 (0.02)	1,216	0.69 (0.05)	11.38	0.002
Taking prescription for hypertension					7.15	0.029
No	7,027	77.79	879	82.26
Yes	2,415	22.21	294	17.74
Taking prescription for high cholesterol					9.23	0.005
No	8,349	85.75	1044	89.93
Yes	1,552	14.25	172	10.07

Data source: NHANES 2005-2008.