Prevalence of metabolic syndrome components among the elderly using three different definitions: a cohort study in Finland

Objective

Limited data are available on the metabolic syndrome (MetS) and its components in elderly people (aged 70 years and over) at population level in Northern Europe. A study was undertaken to investigate the prevalence of MetS and its components in an aging population by using different definitions.

Design, setting, and subjects

A cross-sectional study of 539 inhabitants from Northern Finland (mean age 71.9 years) was conducted to investigate the prevalence of MetS, by using the definitions of MetS by the National Cholesterol Education Panel (NCEP), the modified NCEP (NCEPm), and the International Diabetes Federation (IDF).

Main outcome measures

Prevalence of MetS by the NCEP, NCEP modified, and IDF criteria.

Results

Overall, the prevalence of MetS was 24.7%, 35.2%, and 37.2% in men, by NCEP, modified NCEP, and IDF-definitions, respectively. In women the corresponding figures were 20.9%, 33.1%, and 47.8%. Hypertension was the most common component in both men (91.8%) and women (89.0%) by the IDF criteria. Glucose abnormalities were particularly prevalent in men (53.2% by NCEP and 78.4% by IDF criteria).

Conclusions

The most common component was hypertension in both genders. Lower waist-circumference cut-off points of the IDF criteria led to a higher prevalence of MetS particularly in women. Prevalence of MetS varied significantly when measured by different definitions. Nearly half of older women met the IDF definition of MetS, which was more than twofold when compared with NCEP. Clinical practitioners should be aware of the limitations when using set criteria of MetS, in contrast to identifying the individual cardiovascular risk factors and the accumulation of these.Key Words: Elderly population, definitions, IDF, metabolic syndrome, prevalenceData on the prevalence of components of the metabolic syndrome (MetS) among elderly Northern Europeans, particularly as compared by the three currently used different definitions, are limited. The authors observed significant variation in the prevalence of MetS and associated components among an ageing Finnish population, when measured with the different criteria. Furthermore, different definitions identified different individuals as having MetS. Clinical practitioners should therefore be aware of the limitations using set criteria of MetS, in contrast to identifying the individual cardiovascular risk factors and the accumulation of these.     

Are qualitative and quantitative sleep problems associated with delinquency when controlling for psychopathic features and parental supervision?

The aim of this study was to explore the relationship between sleep, including both qualitative and quantitative aspects, and delinquent behaviour while controlling for psychopathic features of adolescents and parental supervision at bedtime. We analysed data from a nationally representative sample of 4855 Finnish adolescents (mean age 15.3 years, 51% females). Sleep problems, hours of sleep and delinquency were evaluated via self‐report. Psychopathic features were measured with the Antisocial Process Screening Device – Self‐Report. In negative binomial regressions, gender and sleep‐related variables acted as predictors for both property and violent crime after controlling for psychopathic features and parental supervision at bedtime. The results suggest that both sleep problems (at least three times per week, at least for a year) and an insufficient amount of sleep (less than 7 h) are associated with property crime and violent behaviour, and the relationship is not explained by gender, degree of parental supervision at bedtime or co‐occurring psychopathic features. These results suggest that sleep difficulties and insufficient amount of sleep are associated with delinquent behaviour in adolescents. The significance of addressing sleep‐related problems, both qualitative and quantitative, among adolescents is thus highlighted. Implications for a prevention technique of delinquent behaviour are discussed.