Skip to main content
. 2010 Aug 20;12(12):935–944. doi: 10.1111/j.1751-7176.2010.00362.x

Table III.

 Baseline Characteristics by Age

variable age <65 (n=61,355) age≥65(n=47,796) P value
mean/% SD mean/% SD
Age 51.83 9.01 73.17 4.57 <.001
Sex
 Female 53.83   60.51   <.001
 Male 46.17   39.49  
Race
 Caucasian 35.39   35.40   <.001
 African American 7.62   4.31  
 Hispanic 1.60   1.49  
 Other (Asian/Indian) 1.16   0.68  
 Unknown 54.23   58.12  
Smoking
 Never smoking 38.59   37.99   <.001
 Former 25.55   34.47  
 Current 17.30   6.80  
 Unknown 18.56   20.75  
Clinical parameters
 Baseline BP
  Systolic BP 136.48 8.83 138.70 20.03 <.001
  Diastolic BP 82.91 11.85 75.38 11.05 <.001
 Follow‐up BP
  Systolic BP 131.12 14.07 133.99 15.23 <.001
  Diastolic BP 79.64 8.92 73.23 8.86 <.001
Body mass index
 <30 36.54   59.72   <.001
 ≥30 63.46   40.28  
Uncomplicated hypertension 43.44   25.69   0.061
 Normal 4.89   2.87    
 Prehypertension 16.34   9.96    
 Stage 1 14.01   8.25    
 Stage 2 8.21   4.60    
 Isolated systolic hypertension 7.34   9.63   <.001
Complicated hypertension 56.56   74.31   .791
 Normal 6.86   9.12    
 Prehypertension 22.26   29.39    
 Stage 1 18.25   23.88    
 Stage 2 9.19   11.92    
 Isolated systolic hypertension 11.83   27.78   <.001
Comorbid conditions
 Dyslipidemia 51.81   47.32   <.001
 Diabetes 12.80   11.66   <.001
 Cerebrovascular disease 1.40   4.58   <.001
 Kidney disease 1.09   2.85   <.001
 Heart disease 5.27   12.44   <.001
 Peripheral vascular disease 0.90   2.42   <.001
 Coronary heart disease 48.22   64.24   <.001
No. of comorbidities
 0 43.44   25.69   <.001
 1 44.11   52.28  
 2 11.84   20.44  
 ≥3 0.61   1.58  

Abbreviations: BP, blood pressure; SD, standard deviation.