TC led to a greater decrease in systolic and diastolic BP  than UC .
The differences between TC and UC for systolic BP tend to become larger when no treatment modification is applied .
TC seems a valuable tool for hypertension management
There is an increasing interest for using telecare(TC ) in the management of hypertension .
Accuracy of blood pressure measurements transmitted through a telemedicine system in underserved populations.
In underserved population s , inadequate surveillance and treatment allows hypertension to persist until actual cardiovascular events occur . Thus , we developed an Internet-based telemedicine system to address the suboptimal control of hypertension and other modifiable risk factors . To minimize cost , the subjects used home monitors for blood pressure ( BP ) measurements and entered these values into the telemedicine system . We hypothesized that patients could accurately measure their BP and transmit these values via a telemedicine system . Inner city and rural subjects ( N = 464 ; 42 % African-American or Hispanic ) with 10 % or greater 10-year risk of cardiovascular disease and with treatable risk factors were r and omized into two groups , control group ( CG ) and telemedicine group ( TG ) . Each subject received a home sphygmomanometer with memory . The TG recorded and entered BP at least weekly . During office visits , the BP meters were downloaded and recorded BP compared to BP values transmitted via telemedicine . The telemedicine ( T ) BP values were similar to the meter recorded ( R ) values ( T : systolic/diastolic BP 133.4 + /- 11.1/77.5 + /- 6.8 mm Hg , and R : systolic/diastolic BP 136.4 + /- 11.9.4/79.7 + /- 7.5 mm Hg ) . The percent error was < 1 % for both systolic ( -0.02 + /- 0.04 % ) and diastolic ( -0.03 + /- 0.04 % ) BP . Lastly , the telemedicine BP values were similar to the office ( O ) BP values for systolic and diastolic BP ( T : systolic/diastolic BP 133.4 + /- 11.1/77.5 + /- 6.8 mm Hg , and O : systolic/diastolic BP 136.3 + /- 20.5/78.1 + /- 10.5 mm Hg ) . In underserved population s , this inexpensive approach of patients using a home monitor and entering these values into a telemedicine system provided accurate BP data
TC led to a greater decrease in systolic and diastolic BP  than UC .
The differences between TC and UC for systolic BP tend to become larger when no treatment modification is applied .
TC seems a valuable tool for hypertension management
There is an increasing interest for using telecare(TC ) in the management of hypertension .