Research Article

Cell-Phone Use and Self-Reported Hypertension: National Health Interview Survey 2008

Table 1

Characteristics of the participants by cell-phone use.

CharacteristicCell-phone Nonusers ( )Predominantly landline users ( )Dual users of cell phone and landline ( )Predominantly Cell-phone users ( )P value

Age, years44.52 ± 0.3453.89 ± 0.4245.98 ± 0.2740.80 ± 0.43<.0001
Female, %49.90 ± 0.6854.34 ± 1.0151.44 ± 0.8050.90 ± 1.15.004

Smoking categories,%<.0001
 Never smoker55.86 ± 0.7054.23 ± 1.0560.80 ± 0.8660.51 ± 1.06
 Current smoker25.79 ± 0.6218.47 ± 0.8216.46 ± 0.6419.05 ± 0.91
 Former smoker18.34 ± 0.5127.29 ± 0.8722.74 ± 0.7320.44 ± 0.88

Alcohol intake, %<.0001
 Never drinker23.53 ± 0.6420.68 ± 0.8919.90 ± 0.7015.67 ± 0.84
 Former drinker15.55 ± 0.5317.93 ± 0.6912.56 ± 0.5610.49 ± 0.68
 Current light drinker38.75 ± 0.7041.55 ± 1.0145.58 ± 0.8249.11 ± 1.13
 Current moderate drinker14.62 ± 0.4713.71 ± 0.7015.84 ± 0.6516.53 ± 0.77
 Current heavy drinker6.21 ± 0.335.05 ± 0.454.70 ± 0.366.91 ± 0.65
 Unknown drinking status1.34 ± 0.141.09 ± 0.191.41 ± 0.221.29 ± 0.28

Race/ethnicity, %<.001
 Non-Hispanic whites63.54 ± 0.8276.24 ± 0.8571.61 ± 0.8566.01 ± 1.15
 Non-Hispanic blacks13.86 ± 0.598.72 ± 0.4810.36 ± 0.5611.48 ± 0.77
 Mexican Americans16.45 ± 0.599.92 ± 0.5911.35 ± 0.5915.43 ± 0.82
 Others6.16 ± 0.355.13 ± 0.436.68 ± 0.407.08 ± 0.57

Education categories<.0001
 <high school21.43 ± 0.6414.39 ± 0.7611.16 ± 0.599.74 ± 0.79
 high school29.35 ± 0.6831.23 ± 0.9925.43 ± 0.7422.39 ± 1.02
 >High school49.22 ± 0.8254.38 ± 1.0363.42 ± 0.8767.87 ± 1.18

Physical activity, %53.18 ± 0.7845.08 ± 1.0542.57 ± 1.0938.74 ± 1.30<.0001
Body mass index, kg/m229.65 ± 0.2030.12 ± 0.2929.78 ± 0.2128.92 ± 0.25.2

Data presented are row percentages or mean values ± SE.
* P value represents differences in means (SD) or proportions, using analysis of variance or Chi-square test.