Quality of life in chronic musculoskeletal symptomatic Chilean population: secondary analysis of National Health Survey 2009-2010.

Background: Health-related quality of life (HRQoL) is defined as the patient's perception of their health status. HRQoL can be modified by illnesses, treatments or social and health policies. Chronic musculoskeletal pain is a modifying factor of HRQoL that leads to lower quality of life, elevated suffering and disability.