LAUSR

AIMS To describe the characteristics of patients with chronic conditions according to their risk levels assigned by the adjusted morbidity groups (AMG). To analyse the factors associated with a high risk level and to study their effect. DESIGN Observational cross-sectional study with an analytical focus. LOCATION Primary care (PC), Madrid Health Service. PARTICIPANTS Population of 18,107 patients stratified by their risk levels with the AMG in the computerised clinical records of Madrid PC. MAIN MEASUREMENTS The variables studied were: socio-demographic, clinical-nursing care and use of services. Univariate, bivariate, and multivariate analysis were performed. RESULTS Of the 18,107 patients, 9,866(54.4%) were identified as chronic patients, with 444 (4.5%) stratified as high risk, 1784 (18,1%) as medium risk, and 7,638 (77.4%) as low risk. The high risk patients, compared with medium and low risk, had an older mean age [77.8 (SD=12.9), 72.1 (SD=12.9), 50.6 (SD=19.4)], lower percentage of women (52.3%, 65%, 61.1%), a higher number of chronic diseases [6.7 (SD=2.4), 4.3 (SD=1.5), 1.9 (SD=1.1)], polymedication (79.1%, 43.3%, 6.2%), and contact with PC [33.9 (28), 21.4 (17.3), 7.9 (9.9)] (P<.01). In the multivariate analysis, the high risk level was independently related to age>65 [1.43 (1.03-1.99), male gender (OR=3.46, 95% CI=2.64-4.52), immobility (OR=6.33, 95% CI=4.40-9.11), number of chronic conditions (OR=2.60, 95% CI=2.41-2.81), and PC contact>7 times (OR=1.95, 95% CI=1.36-2.80)] (P<.01). CONCLUSIONS More than half of the population is classified by the AMG as a chronic, and it is stratified into 3 risk levels that show differences in gender, age, functional impairment, need for care, morbidity, complexity, and use of Primary Care services. Age>65, male gender, immobility, number of chronic conditions, and contact with PC>7 times were the factors associated with high risk.