Recruitment strategy:
The study is carried out in two municipalities in the Region of Southern Denmark (Haderslev and Varde municipality. Total number of inhabitants: 98.925). All general practitioners in the two municipalities (n=68) have been invited, and a total of 47 have agreed to participate in the study. A total of 200 citizens born 1957-1986 are selected from the patient list of each participating GP. Before selection, the citizens are stratified into households, and subsequently households are randomly selected until the total number of citizens per enrolled GP reaches 200. In selection of households the proportion of citizens living alone and the proportion of citizens living with one or more potential participants is taken into account. No disease-related criteria for excluding a citizen are defined prior to the study. The selected citizens are invited to participate and asked to sign a declaration of consent.
Risk stratification and preventive services offered:
Enrolled participants receive a 15-item questionnaire on lifestyle, familiar disposition of lifestyle disease and selected symptoms. From the individual electronic patient records (EPR) at the GP information on diagnoses and treatment of COPD, type-2 diabetes, hyperlipidemia, hypertension and ischemic heart disease are drawn. Based on questionnaire and EPR data the participants are stratified into four groups: 1) Citizens with an already diagnosed lifestyle related disease, 2) Citizens with an increased risk of lifestyle related disease, 3) Citizens with risk behavior and 4) Citizens with a healthy lifestyle.
Citizens in group 1 are already being treated and/or receive behavioral interventions and are therefore not the primary target of this study. Citizens in group 2 has a calculated increased risk of lifestyle related disease(s) based on validated predictive models for risk of COPD, type-2 diabetes and cardiovascular disease. The risk of COPD is calculated using the COPD-PS screener algorithm taking into account information on age, total cigarette consumption and respiratory symptoms. The risk of type-2 diabetes is calculated based on the algorithm used in the Addition study including information on age, gender, BMI, history of hypertension, physical activity and family history of diabetes. The cut-off value for being at risk of type-2 diabetes, and COPD follows the recommendations of the two models. The risk of cardiovascular disease is calculated using the Heart Score BMI score based on information about age, gender, smoking status and BMI. An increased risk of cardiovascular disease is defined in citizens with a ≥5% risk of dying of cardiovascular disease within the next 10 years. Citizens in group 2 are offered a preventive program at the GP including an initial health examination and subsequent behavior counselling. Citizens in group 3 are defined by having a BMI>35, being daily smoker, having a high risk alcohol consumption, having unhealthy eating habits and/or low physical activity. Evaluation of eating habits is based on the recommendations in the Swedish National Guidelines on Disease Prevention, and evaluation of alcohol consumption and physical activity is based on recommendations from the Danish Health Authority. Citizens in group 3 are offered behavior counselling in the municipality and community health services, if necessary. Citizens in group 4 are not offered any further services.
Electronic health information system:
The intervention is supported by a patient-centered health information system that facilitates informed patient action based on the predictive model for identification and stratification of citizens to the appropriate care providers and that supports the initiation and follow up of preventive care through the provision of health information resources, decision aids, risk calculators, personalized motivational messages and integrates primary care and municipality health care providers.
Common training course:
Before the study commences enrolled GPs, practice staff and health professionals from the municipalities are offered a common training course. The aim of the course is to train the specific intervention elements and to improve the inter-sectoral knowledge and collaboration on prevention of lifestyle diseases.
Evaluation:
Evaluation of the study will be carried out using quantitative as well as qualitative research methods. Details on evaluation methods are included in section 9.
Results of the present pilot study will be used for the adjustment of the intervention prior to a large scale study comprising 10 municipalities, up to 360 GPs and 200.000 citizens.
