Abstract

excess weight is a risk factor for numerous co-morbidities that predominantly occur in later life. This study's purpose was to analyse the association between excess weight and health service use/costs in the older population in Germany. this cross-sectional analysis used data of n = 3,108 individuals aged 58-82 from a population-based prospective cohort study. Body mass index (BMI) and waist-to-height ratio (WHtR) were calculated based on clinical examinations. Health service use was measured by a questionnaire for a 3-month period. Corresponding costs were calculated applying a societal perspective. 21.8% of the sample were normal weight, 43.0% overweight, 25.5% obese class 1 and 9.6% obese class ≥2 according to BMI. In 42.6%, WHtR was ≥0.6. For normal weight, overweight, obese class 1 and obese class ≥2 individuals, mean costs (3-month period) of outpatient care were 384€, 435€, 475€ and 525€ (P < 0.001), mean costs of inpatient care were 284€, 408€, 333€ and 652€ (P = 0.070) and mean total costs 716€, 891€, 852€ and 1,244€ (P = 0.013). For individuals with WHtR <0.6 versus ≥0.6, outpatient costs were 401€ versus 499€ (P < 0.001), inpatient costs 315€ versus 480€ (P = 0.016) and total costs 755€ versus 1,041€ (P < 0.001). Multiple regression analyses controlling for sociodemographic variables showed a significant effect of obesity on costs of outpatient care (class 1: +72€; class ≥2: +153€) and total costs (class ≥2: +361€) while the effect of overweight was not significant. WHtR ≥0.6 significantly increased outpatient costs by +79€ and total costs by +189€. excess weight is associated with increased service use and cost in elderly individuals, in particular in obese class ≥2 individuals.

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