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

Table 2

Association between cell-phone use and hypertension.

Cell-phone use	Sample size	Weighted prevalence, %^†	Age-adjusted OR (95% CI)	Multivariable OR (95% CI)*
Hypertension
Cell-phone nonusers	9190	32.71	1 (Referent)	1 (Referent)
Predominantly landline users	3606	43.01	0.99 (0.89–1.09)	1.05 (0.92–1.19)
Dual users of cell phone and landline	5420	29.48	0.85 (0.78–0.94)	0.92 (0.82–1.04)
Predominantly cell-phone users	2919	21.86	0.78 (0.69–0.88)	0.86 (0.75–0.98)
P (trend)			<.0001	.005

*Adjusted for age (years), sex (female or male), ethnicity (non-Hispanic white, non-Hispanic blacks, Mexican Americans, or others), smoking categories (never, former, or current), alcohol intake (never drinker, former drinker, current light drinker, current moderate drinker, current heavy drinker, or unknown drinking status), body mass index (kg/m²), education (<high school, high school, or >high school), landline use (absent or present), and moderate physical activity (times/week).
^†All estimates were weighted to account for the complex survey design and survey nonresponse, using the sample adult record weight, to represent the U.S. civilian noninstitutionalized population aged ≥18 years.