The Purpose Of The Contract Is To Carry Out The Necessary Work To Know The Prevalence, Distribution And Characteristics Of The Main Health Risk Factors Related To Behavior According To The Surveillance System For Risk Factors Associated With Non-Communicable Diseases (Sivfrent) Aimed At The Youth, Adult And Elderly Population In The Community Of Madrid. The Objective Of This System Is To Establish Priorities, Plan Prevention And Health Promotion Strategies, And Evaluate The Effects Of Interventions, Within The Framework Of Developing The Strategic Principles Related To Health Promotion And Disease Prevention Of The General Directorate Of Public Health In The Territorial Area Of ​​The Community Of Madrid.