This variable describes the person’s living habits and lifestyle as healthy or unhealthy, thus it is assigned two levels: “yes” or “no”, respectively. A patient attributed to “healthy lifestyle” is a non-smoker, with moderate alcohol consumption, healthy-eating habits, who is sufficiently exercising. As a patient with an “unhealthy lifestyle” was considered anyone who did not conformed to one or more of these characteristics . Each health behaviour (alcohol consumption, healthy nutrition, etc.) was defined according to the WHO guidelines for healthy lifestyles .