RESUMO
OBJECTIVE: to explore health-care utilization (primary and specialized health-care, hospitalizations, day hospital and emergency services) and overuse in elderly in Spain, considering the influence of health status, sex, social class and its temporal trend. DESIGN: cross sectional study in two phases. SETTING: Spain. PARTICIPANTS: people surveyed in the National Health Surveys 2006 and 2011-12. MAIN MEASUREMENTS: Health status was measured using self-rated and diagnosed health (number and diagnoses). Social class was obtained from the last occupation of the main supporter (manual and non-manual workers). Logistic regression analyses were conducted adjusting by sex, age, health status, social class and year, obtaining its predictive capacity. RESULTS: the percentage of elderly population with health-care utilization decreased during the period analyzed. Women who belonged to the manual workers category presented the highest prevalence of low health (low self-rated health in 2006: 70.6%). Low health status was associated with a higher utilization of health-care services. Self-rated health was a better predictor of health-care utilization and overuse than diagnosed health, getting the highest predictive capacity for specialized health-care (C = 0.676). Old people from low social class used with higher frequency primary health-care and emergency services. On the other hand, specialized health-care and day hospital were more used by high social classes. CONCLUSIONS: inequalities in health and health-care utilization have been observed in elderly according social class. It is necessary to consider self-rated health as a health-care utilization predictor and to review our health-care services accessibility and equity.