This paper analyzes the relation which exists among various factors which can be considered to cause dependence (education level, physical exercise, consumption of alcohol and tobacco, life satisfaction, and income level) and the level of dependency demonstrated by different subjects during basic and instrumental activities of daily living. In this way, we can observe that as education level, life satisfaction, physical activity and consumption of alcohol increase (with basic activities) level of dependency decreases. Furthermore, we can observe that as negative perception toward health, perception of incapability and tobacco consumption increase (with instrumental activities) level of dependency increases.