Research Article

The Relationship between Sleep-Disordered Breathing and Hypertension in a Nationally Representative Sample

Table 1

Baseline characteristics of the study population*.

CharacteristicsNo hypertension ()Hypertension () value

Women (%)2313 (51.9)1145 (50.1)0.011
Age (years)40.2 ± 0.453.6 ± 0.6<0.0001
Race/ethnicity (%)<0.0001
 Non-Hispanic whites2123 (71.1)1210 (74.8)
 Non-Hispanic blacks765 (9.0)587 (12.4)
 Mexican Americans973 (9.4)327 (5.2)
 Others571 (10.4)227 (7.4)
Education categories (%)<0.0001
 Below high school1121 (16.0)687 (18.7)
 High school1049 (23.7)590 (25.7)
 Above high school2262 (60.2)1074 (55.6)
Smoking (%)0.522
 Never smoker2479 (54.6)1188 (50.1)
 Former smoker905 (21.0)697 (29.2)
 Current smoker1048 (24.3)466 (20.7)
Alcohol intake (%)<0.0001
 Current drinker3164 (76.7)1441 (68.4)
Moderate physical activity (%)2168 (55.6)1005 (49.6)<0.0001
Body mass index (%)<0.0001
 Normal weight1568 (38.5)483 (21.4)
 Overweight1595 (34.3)781 (32.9)
 Obese1269 (27.2)1087 (45.6)
Depression (%)262 (4.5)172 (6.4)0.023
Diabetes (%)287 (4.6)544 (18.0)<0.0001
Total cholesterol (mg/dL)198.75 ± 0.79204.34 ± 1.250.002
C-reactive protein (mg/dL)0.364 ± 0.0150.452 ± 0.019<0.0001

*Data presented are number (percentages) or mean values ± standard error (SE), as appropriate for the variable.