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PubMed2004

[Estimation of the number of institutionalized elderly in Chile].

BACKGROUND: Elderly people (>60 years) in Chile represented 11.4% (n=1,717,478) of the total population in 2002. The group with disabilities or mental problems is increasing and there is no reliable information about the number of institutionalized elderly subjects. AIM: To estimate the number of elderly people living in residences for long term care and their main characteristics. PATIENTS AND METHODS: Chilean Census does not provide exact information about institutional care, therefore we developed a "proxy" indicator of the percentage of institutionalized elderly (those living in "collective residences with more than 5 elderly persons and in which they represent more than 25% of the residents". This proxy has a R2=0.9859 with the true value of institutionalized persons for those Latin-American countries with exact value in census data at CELADE. RESULTS: Using the proxy we found that institutionalized elderly population had increased from 14,114 (1992) to 26,854 (2002) and is projected to reach 83,500 (2025). In 2002, there were 1,668 institutions (37.4% informal care). In the Metropolitan Area, there were 804 institutions (14,178 elderly persons) and 40.3% of these were registered at the Ministry of Health. The proportion of institutionalized elderly subjects was 1.56% of the total elderly population; this proportion increased from 0.87% in subjects 60-74 years old to 2.5% among subjects aged 75-84 years and 6.1% in subjects 85 years old and over. Among subjects living in institutions, 60.9 were women, 21% were married, 35% were single, approximately 50% receive a pension and around 15% were handicapped. CONCLUSIONS: Institutional care affects a small percentage of elderly population, but it will increase in the near future. The main characteristics of institutionalized elderly subjects are not well known. We propose to create a formal Registry of these institutions and to include Nursing Homes and hospitals in type of housing of future Censuses.

Age Distribution↗
PubMed2001

[The population treated in the general psychiatric sector in 1993 and 1998. Clinical and demographic evolution].

BACKGROUND: The French information system in public psychiatry sectors does not collect morbidity data for the population being treated, estimated as more than a million persons in 1997. Consequently, two surveys were financed by the "Direction Générale de la Santé" and carried out in 1993 and 1998 in order to specify clinical, social and demographic characteristics of the patients. These surveys allowed a follow-up of evolutions according to the pathology and mode of treatment in a context where outpatient treatments are becoming increasingly frequent. METHODS: A census of the patients was made at a given moment, between one and fifteen days according to the mode of treatment. One sector out of two was surveyed, using a systematic selection process. The ICD-10 was used for diagnosis reference. The same methodology was applied in 1993 and 1998. Comparisons were made with the data supplied by the sectors annually and with the data concerning the general population in order to calculate rates per age groups. RESULTS: Between 1993 and 1998, the number of patients increased by +37% in outpatient care, and in part time care, and decreased by -12% in full time care. Rates for patients increased for all age groups in outpatient and part time care, more particularly for the 35 to 49 years old. Conversely, rates decreased in full time care, above all for patients over seventy. In each mode of treatment, the number of patients presenting mood disorders and neurotic disorders increased more than the average, and the proportion of patients with organic mental disorders and mental retardation decreased. Evolutions were different according to the mode of treatment schizophrenia, schizotypal and delusional disorders, and disorders of adult personality and behaviour. CONCLUSIONS: Recourse to outpatient care and part time care increased considerably over five years but evolutions were markedly different from one diagnosis to another. In full time care, the decrease more particularly concerned certain pathologies and age groups. Three phenomena, with possible interactions, could explain the evolutions observed: the population liable to have recourse to psychiatric care is increasing, health policies have changed and care supply has become diversified, and recourse to psychiatric care is now increasingly accepted.

Adult↗
PubMed1982

Who counts?

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Americas↗
PubMed1993

The 1990 Post-Enumeration Survey: operations and results.

The author assesses the 1990 Post-Enumeration Survey, which was "designed to produce Census tabulation of [U.S.] states and local areas corrected for the undercount or overcount of population....[He] discusses the process that produced the census adjustment estimates [as well as] the work aimed at improving the estimates.... The article then presents some of the principal results...."

Americas↗
PubMed1993

Accuracy of the 1990 census and undercount adjustments.

"In July 1991 the [U.S.] Census Bureau recommended to its parent agency, the Department of Commerce, that the 1990 census be adjusted for undercount. The Secretary of Commerce decided not to adjust, however. Those decisions relied at least partly on the Census Bureau's analyses of the accuracy of the census and of the proposed undercount adjustments based on the Post-Enumeration Survey (PES).... This article describes the total error analysis and loss function analysis of the Census Bureau. In its decision not to adjust the census, the Department of Commerce cited different criteria than aggregate loss functions. Those criteria are identified and discussed."

Americas↗
PubMed1993

Assessing between-block heterogeneity within the post-strata of the 1990 Post-Enumeration Survey.

"The 1990 [U.S.] Post-Enumeration Survey (PES) stratified the population into 1,392 subpopulations called post-strata based on location, race, tenure, sex and age, in the hope that these subpopulations were homogeneous in relation to factors affecting the Census coverage....With block-level data from the PES for sites around Detroit and Texas, we are able to examine empirically the extent to which this hope was realized. Using various measures, we find that between-block variation in erroneous enumeration and gross omission rates is about the same magnitude as, and largely in addition to, the corresponding between-post-stratum variation." Comments by Joseph L. Schafer and Donald Ylvisaker and a rejoinder by the authors are included (pp. 1,125-9).

Americas↗
PubMed1993

Estimating heterogeneity in the probabilities of enumeration for dual-system estimation.

"We show how conditional logistic regression can be used to estimate the probability of being enumerated in a census and apply the model to the 1990 Post-Enumeration Survey (PES) in the United States.... We discuss some special problems caused by the fact that the PES sample area is open to migration between the captures. We also consider the effect of data errors in estimation. We characterize hard-to-enumerate populations and give some tentative estimates of correlation bias."

Americas↗
PubMed1993

A three-sample multiple-recapture approach to census population estimation with heterogeneous catchability.

"A central assumption in the standard capture-recapture approach to the estimation of the size of a closed population is the homogeneity of the 'capture' probabilities. In this article we develop an approach that allows for varying susceptibility to capture through individual parameters using a variant of the Rasch model from psychological measurement situations. Our approach requires an additional recapture. In the context of census undercount estimation, this requirement amounts to the use of a second independent sample or alternative data source to be matched with census and Post-Enumeration Survey (PES) data.... We illustrate [our] models and their estimation using data from a 1988 dress-rehearsal study for the 1990 census conducted by the U.S. Bureau of the Census, which explored the use of administrative data as a supplement to the PES. The article includes a discussion of extensions and related models."

Americas↗
PubMed1993

Hierarchical logistic regression models for imputation of unresolved enumeration status in undercount estimation.

"In this article we describe a logistic regression modeling approach for nonresponse in the [U.S.] Post-Enumeration Survey (PES) that has desirable theoretical properties and that has performed well in practice.... In the 1990 PES, interviews were not obtained from approximately 1.2% of households in the sample, and approximately 2.1% of the individuals in interviewed households were considered unresolved after follow-up....The missing binary enumeration statuses for these unresolved cases were replaced with probabilities estimated under a statistical model that incorporated covariate information observed for these cases. This article describes an approach to modeling missing binary outcomes when there are a large number of covariates."

Americas↗
PubMed1992

Ethnic group and the British census: the search for a question.

"The 1991 census contained, for the first time, a question on the ethnic group of each member of the population of Great Britain. This paper reports on how a question was developed which has a sufficiently high degree of acceptance from all the main ethnic groups, and which is answered sufficiently accurately, to justify inclusion in the census."

Censuses↗
PubMed1995

The 1991 census of population in England and Wales.

"This paper describes the 1991 census in England and Wales: how it was planned and implemented and how its results are being assessed. The description brings out the tradeoffs that are necessary in undertaking a census, and some respects in which plans for a census in 2001 will need to take account of experience of that in 1991." Consideration is given to such issues as confidentiality, the ethnic group question, underenumeration, census output, and future plans for census improvement. A discussion of the paper by various contributors and an author's response is included (pp. 230-40).

Censuses↗