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Biomedical subjects

K Juva

Publications and source records attributed to K Juva.

At least 19 recordsLinked to original sources

One-year risk of institutionalization in demented outpatients with caretaking relatives.

In order to determine the factors associated with good and poor 1-year prognosis of demented patients, the caretakers of 100 home-based patients attending a specialist memory clinic were interviewed. After the follow-up, 71% continued to live at home. Mild dementia, independence in activities of daily living, fair independence in functions of instrumental activities of daily living, and lack of depression were clear signs for a good prognosis. Some patients with severe dementia and poor functional capacity continued to live at home. Continuing home care was also more likely if memory impairment, as opposed to functional problems, was expressed as the main concern. The proportion of caretakers mentioning memory decline as the main problem decreased during 1 year from 38% to 9% and the proportion mentioning functional problems increased from 48% to 64% among those continuing in home care. Memory disturbances are the first to appear and cause problems, but only functional decline threatens living at home.

Activities of Daily Living

Functional assessment scales in detecting dementia.

AIM: to evaluate the use of different functional scales in detecting dementia in a population study. METHODS: the study is part of the Helsinki Ageing Study. A random sample of 795 subjects aged 75 (n = 274), 80 (n = 266) and 85 years (n = 255) was taken. The prevalences of dementia (DSM-III-R criteria) in these age groups were 4.6, 13.1 and 26.7% respectively. The functional scale scores were known for 71% of the non-demented and 66% of the demented subjects. A structured questionnaire completed by a close informant included four functional scales: the index of activities of daily living (ADL), the modified Blessed dementia scale (DS), the instrumental activities of daily living scale (IADL) and the Functional Assessment Questionnaire (FAQ). RESULTS: all the functional scales discriminated demented from non-demented subjects. Based on receiver operating characteristics analysis, the area under the curve (95% confidence interval) was 0.90 (0.80-0.94) for the ADL, 0.94 (0.87-0.97) for the DS, 0.95 (0.90-0.98) for the IADL and 0.96 (0.92-0.98) for the FAQ. The effects of age, sex and education in detecting dementia were minor or non-existent in the ADL, DS and FAQ scales, but age had an effect on the performance of the IADL scale. All the scales detected even mild dementia adequately. CONCLUSIONS: functional scales can be used in detecting dementia when functional assessment is already used for other purposes, such as among elderly primary care patients.

Activities of Daily Living

Major depression in the elderly: a population study in Helsinki.

The aim of the study was to estimate the prevalence of major depression and to evaluate associated features in random age cohorts of 75, 80, and 85 years (N = 651). A clinical examination was made by experienced health center physicians, and major depression was diagnosed according to DSM-III criteria. The prevalence increased with age and was 1% to 4% in the age groups of 75 and 80 years, but 13% at the age of 85 years. No sex difference was found. The frequency of major depression was fourfold among institutionalized patients (16%) as compared to those living at home (4%). Major depression was strongly associated with objective health, intellectual functioning, and functional capacity. Depression was most common in subjects suffering from poor vision, urinary incontinence, or Parkinson's disease (odd ratios 4.2 to 4.9). Depression was also correlated with musculoskeletal disorders, coronary heart disease, and cerebrovascular diseases (odd ratios 2.5 to 3.4). The survey suggests that major depression is quite rare in healthy elderly people but common in disabled institutionalized patients.

Activities of Daily Living

Usefulness of the Clinical Dementia Rating scale in screening for dementia.

The Clinical Dementia Rating (CDR) scale is a qualitative staging instrument that has traditionally been used for assessing the severity of dementia. We used it for screening dementia in a population study of 75-, 80-, and 85-year-old people. The modified CDR scale was easy to establish and it proved to be useful in screening dementia. A more thorough examination is needed in the second phase to identify the false positives. The sensitivity of the CDR scale was 95% and the specificity 94%.

Activities of Daily Living

Staging the severity of dementia: comparison of clinical (CDR, DSM-III-R), functional (ADL, IADL) and cognitive (MMSE) scales.

The Helsinki Aging Study is based on a random sample of 795 subjects aged 75 years (N = 274), 80 years (N = 266) and 85 years (N = 255). Ninety-three demented patients were found. All were assessed for severity of dementia by Clinical Dementia Rating (CDR) scale by a general practitioner and according to the DSM-III-R criteria by a neurologist. The Mini-Mental State Examination (MMSE) was carried out by a community nurse and the Index of ADL and the IADL-scale by a close informant. The correlation of the severity of dementia between the DSM-III-R criteria and the CDR scale was moderate. The overall agreement was 64.5% and the Kappa index 0.56. The CDR scale tended to put patients in milder categories than the DSM-III-R criteria. The correlation between the clinical scales and categorized MMSE was moderate to fair. The overall agreement between MMSE and DSM-III-R criteria was 64% (Kappa 0.44) and between MMSE and CDR scale 55% (Kappa 0.33%). The dispersion of the functional scales (ADL, IADL) was much greater indicating that there were also other factors influencing the functional capacity than the degree of dementia. Different methods in staging dementia give different results thus influencing for instance the results of epidemiological studies. Functional scales are needed in clinical practice in addition to the assessment of the severity of dementia. The CDR scale is useful in assessing the need for support services.

Activities of Daily Living

Reference intervals developed from data for hospitalized patients: computerized method based on combination of laboratory and diagnostic data.

We utilized the databases of a hospital information system to select for determination of reference values various individual hospitalized patients on the basis of their diagnoses at discharge. The nonparametric 2.5-97.5% "health-related" reference intervals were calculated for hemoglobin concentration, mean corpuscular volume (MCV), and erythrocyte count for both sexes. After excluding patients with diseases possibly affecting erythrocyte variables, we obtained a final group of 1786 women and 1450 men, ages 20-65 years, who were studied in age groups of 20-30, 30-45, 45-55, and 55-65 years. The upper reference limits of the MCV results obtained from hospitalized patients were higher than those produced conventionally from healthy individuals, as would be intuitively suggested by clinical experience. This method, based on selection by diagnosis, could be applicable to various analytes measured in hospital laboratories, provided sufficient data are available as databases.

Adult

Prevalence of dementia in the city of Helsinki.

The Helsinki Aging Study is based on a random sample of 795 subjects aged 75-years (N = 274), 80-years (N = 266) and 85-years (N = 255). A clinical examination including Clinical Dementia Rating (CDR)-scale was carried out in 82% of the cases. 93 demented subjects were found, 17 of whom had mild dementia. The prevalence of moderate and severe dementia was 2.9%, 10.3% and 23.3% in the age groups of 75-year-olds, 80-year-olds and 85-year-olds, respectively. If we take into account also the mild cases, we get the prevalence of dementia 4.6%, 13.1% and 26.7% in the above mentioned age groups, respectively. The proportion of mild dementias was lower than expected, which probably reflects both the difficulties to recognize mild dementia in an elderly population and the relatively small compensatory capacity of elderly people.

Activities of Daily Living

A programme for assigning target values for external quality assessment schemes in countries with no authorized reference laboratories. Annex. Experiences with deviating results on Ektachem 700 XR.

The use of consensus values in external quality assessment schemes (EQAS) involves several problems and should preferably be replaced with target values obtained by methods of high metrological level. However, such values are difficult to obtain. In the present study we transferred values from the NIST (former NBS) certified reference serum SRM 909 to lyophilized and frozen test sera for various inorganic components using flame absorption or flame emission spectrometry. Enzyme values were assigned by laboratories of members of the former Scandinavian Enzyme Committee. The assignment was based on 2-4 determinations each day through 3 days of experiment. A total of 10 laboratories participated in the work. The results were utilized in a Danish EQAS. One practical concern is the fairly long time (9 months) which was needed for production, collection and compiling all data. To get an impression of how much dry chemistry analysers, e.g, could influence consensus values a Kodak Ektachem 700 XR was studied using lyophilized and frozen sera. The results are reported in the annex. On NIST SRM 909 the values found for sodium(I) were 6% too high even though the findings on frozen human sera were accurate. For aspartate aminotransferase a result three times the target values was found on a human lyophilized serum, while the values on the frozen sera only were slightly too high.

Blood

The demented elderly in the city of Helsinki: functional capacity and placement.

OBJECTIVE: To study prevalence, functional capacity, and placement of demented patients in a randomly selected population. DESIGN: Survey. SETTING: Random sample from population registry of the City of Helsinki. PARTICIPANTS: Nine hundred subjects aged 75 years, 80 years and 85-years, 300 in each group. MEASUREMENTS: For each participant, we completed a questionnaire for the subject and an informant and a functional-capacity scale and Mini-Mental Status Examination by a community nurse, including the Clinical Dementia Rating (CDR) scale. Subjects with CDR of 0.5 or greater were examined by a neurologist who diagnosed the presence or absence of dementia according to DSM-III-R. RESULTS: Ninety-three subjects of the 656 whose CDR was known were found to have dementia. Three-quarters of them lived in institutions, and they comprised 33%, 60%, and 68% of all institutionalized patients in the above-mentioned age groups, respectively. Community residents suffering from dementia often lived with a caring relative and needed many services. A considerable part of the need was not met. CONCLUSIONS: In the older age groups, the need for institutional placement due to dementia is great. According to our study, it seems unlikely that these patients could be cared for in any other way, at least not on a large scale. The need for services for home-dwelling patients is also great, and the relatives carry a heavy load in taking care of demented patients.

Activities of Daily Living

Correction for age, education and other demographic variables in the use of the Mini Mental State Examination in Finland.

The population-based Helsinki Aging Study was comprised of three age groups: 75-, 80- and 85-year-olds. A random sample of 511 subjects completed the Mini Mental State Examination (MMSE) and were assessed on the Clinical Dementia Rating-scale (CDR). According to the CDR results 446 subjects were screened as non-demented. Of these subjects 30% scored below or at 24 MMSE points. Age, education and social group had a significant effect on the MMSE scores, even after excluding the demented cases. Together they explained 10% of the total variance within the MMSE. Social group correlated with education. The MMSE scores were corrected according to age and education. Adjustment of the originally used cutpoint of 24 resulted in cutpoints of 25 and 26 among the 75-year-olds, in the low and high education groups respectively; 23 and 26 in the 80-year-olds; 22 and 23 in the 85-year-olds.

Age Factors

Lipids, lipoproteins and apolipoproteins in the elderly.

The lipoprotein components were studied in connection with a population study concerning the state of health and living habits of the elderly people in Turku, Finland. Serum levels of total cholesterol, high density lipoprotein (HDL) cholesterol, triglycerides, apolipoprotein A1 (apo A1) and apolipoprotein B (apo B) of the 347 elderly people (aged 65 years or over) were measured and those of low density lipoprotein (LDL) cholesterol were calculated. The levels of total cholesterol, LDL cholesterol and apo B were significantly higher in females than in males, and the concentrations decreased with advancing age. The concentrations of HDL cholesterol and apo A1 were significantly higher in females than in males but age had no effect. Serum triglycerides behaved differently in males and females; in females age had a significant increasing effect whereas in males no age effect was observed. The apo A1/apo B ratio did not differ between males and females. Reference values of serum lipids, lipoproteins and apolipoproteins of the elderly are suggested.

Aged

Haematological laboratory findings in the elderly: influence of age and sex.

The effects of age and sex on haematological laboratory parameters were studied in connection with a population study in people over the age of 65 years (n = 347). Serum vitamin B12 was the only parameter which decreased significantly with advancing age. Blood leucocyte count, haemoglobin concentration, haematocrit, erythrocyte count, mean erythrocyte volume, mean erythrocyte haemoglobin and serum ferritin values were significantly higher in males than in females. Serum iron, serum transferrin, and plasma and erythrocyte folate levels did not differ between males and females. Thirteen subjects were anaemic and three of them had iron deficiency anaemia. Five subjects had iron deficiency based on serum iron and transferrin but no anaemia. Serum ferritin measurement did not reveal any further subjects with iron deficiency. No case of folate deficiency anaemia was revealed. Although many of the participants were on medication, most of them were living at home and taking care of themselves and represent relatively fit elderly people. Therefore we suggest that these laboratory data can also serve as reference values for the elderly people.

Aged