The BP of the study population will be measured monthly by CHA. If BP is above normal ranges and continues to be elevated at the second monthly measurement, the subject will be followed up more closely by the FHS physician, who will decide the best hypertensive treatment strategy. If BP continues to be elevated at the monthly assessments, even with optimized treatment, the subject will be referred to and followed up by the cardiologist from the public health service connected to FHS. The monthly BP values obtained will be inserted in a data base and software developed by the research team.