Abstract:
OBJECTIVES:This study assesses the properties of the Mini-Mental State Examination (MMSE) with the purpose of improving the efficiencies of the methods of screening for cognitive impairment and dementia. A specific purpose was to determine whether an abbreviated version would be as accurate as the original MMSE in predicting dementia. STUDY DESIGN AND SETTING:A population-based post hoc examination of the performance characteristics of the MMSE for detecting dementia in an existing data set of 243 elderly persons. RESULTS:Sensitivity, specificity, and predictive values were computed for the original MMSE as well as new MMSE scale models derived from a Rasch model item analysis. The optimal threshold for the original MMSE screen yielded sensitivity and specificity estimates of 72.5% and 91.3%, respectively. The use of a subscale resulted in a slightly lower sensitivity (71.0%), specificity (88.4%), and positive predictive value (71.0%) but equal area under the receiver operating characteristic curve. Cross-validation on follow-up data confirmed the results. CONCLUSION:A short, valid MMSE, which is as sensitive and specific as the original MMSE for the screening of cognitive impairments and dementia is attractive for research and clinical practice, particularly if predictive power can be enhanced by combining the short MMSE with neuropsychological tests or informant reports.
journal_name
J Clin Epidemioljournal_title
Journal of clinical epidemiologyauthors
Schultz-Larsen K,Lomholt RK,Kreiner Sdoi
10.1016/j.jclinepi.2006.06.008subject
Has Abstractpub_date
2007-03-01 00:00:00pages
260-7issue
3eissn
0895-4356issn
1878-5921pii
S0895-4356(06)00239-3journal_volume
60pub_type
杂志文章abstract::Measurement of physical activity in epidemiological studies is usually achieved by means of a questionnaire. Little work has been done to determine which questionnaire format has greater validity in an elderly population. In this study of elderly subjects, physical activity as reported in two self-administered questio...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(92)90071-t
更新日期:1992-08-01 00:00:00
abstract::To compare Charlson indices based on chart data and ICD-9 data for agreement overall and on rating specific comorbid conditions, and to compare mortality risks associated with these indices. Prospective cohort study. Six general medicine wards at Yale-New Haven Hospital. 524 consecutive patients who had no clinical ev...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(00)00367-x
更新日期:2001-07-01 00:00:00
abstract::Formulas are derived for determination of the number of patients needed in a prospective comparison of survival curves, when the control group patients have already been followed for some period. Although an explicit formula for the required sample size is not available, the computing is straightforward, and tables of...
journal_title:Journal of clinical epidemiology
pub_type: 临床试验,杂志文章
doi:10.1016/0895-4356(88)90025-x
更新日期:1988-01-01 00:00:00
abstract:OBJECTIVE:To examine the impact of changes in comorbidity--as measured by the Charlson comorbidity index--on self-rated health in a large sample of community-dwelling elderly over a 1-year period, and to examine the differential effects of changes in specific Charlson diagnostic categories. STUDY DESIGN AND SETTING:Lo...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2008.05.009
更新日期:2009-02-01 00:00:00
abstract::Although routinely used in health surveys, the factors affecting maternal perceptions of health in children, especially those with health problems, have received little examination. This question has been addressed using a telephone interview of families of 483 children followed in one of three clinics at Children's H...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(88)90139-4
更新日期:1988-01-01 00:00:00
abstract::We studied the relationship between age at natural menopause and total mortality as well as mortality from ischemic heart disease in a cohort of 6182 California Seventh-Day Adventist women who reported a natural menopause. During follow-up from 1976 through 1988, there were 1831 deaths. A total of 308 deaths due to is...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(98)00170-x
更新日期:1999-04-01 00:00:00
abstract::Although case-crossover analyses have lately emerged as an alternative to case-control analyses in epidemiological studies, it is not yet known in which situations they give reliable conclusions. In this work, the case-crossover and the case-control designs were first compared on the basis of a dataset from a publishe...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(01)00404-8
更新日期:2001-12-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:This study describes the conceptual foundation and psychometric properties of the Burden of Stroke Scale (BOSS), a patient-reported health status assessment designed to quantify the physical, cognitive, and psychological burden of stroke. METHODS:Qualitative research methods were used to devel...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2003.11.016
更新日期:2004-10-01 00:00:00
abstract::Application of sequential analysis may avoid unnecessary experimentation and achieve economical use of available biomaterial stored in biological banks. When, as often happens in cohort case-controls studies, cases are scarce, it may be possible to use multiple control observations per case to increase the power of a ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(93)90073-a
更新日期:1993-03-01 00:00:00
abstract::This article reports on the development and validation of the Italian SF-36 Health Survey using data from seven studies in which an Italian version of the SF-36 was administered to more than 7000 subjects between 1991 and 1995. Empirical findings from a wide array of studies and diseases indicate that the performance ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(98)00094-8
更新日期:1998-11-01 00:00:00
abstract:OBJECTIVES:Our study aimed to systematically assess and report the methodological quality used in epidemiological systematic reviews (SRs) and meta-analysis (MA) of pathogen genotypes/genogroups. STUDY DESIGN AND SETTING:Nine electronic databases and manual search of reference lists were used to identify relevant stud...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,评审
doi:10.1016/j.jclinepi.2019.11.009
更新日期:2020-03-01 00:00:00
abstract:OBJECTIVE:The uptake of research findings into routine health care is a haphazard and unpredictable process. The usefulness of the results of implementation studies is limited, due in part to the lack of an underlying framework of the important dimensions of research studies in this area and the healthcare settings wit...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2004.09.002
更新日期:2005-02-01 00:00:00
abstract:OBJECTIVE:Exposure to ultraviolet radiation has consistently been linked to an increased risk of melanoma. Epidemiologic studies are susceptible to measurement error, which can distort the magnitude of observed effects. Although the reliability of self-report of many sun exposure factors has been previously described i...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2004.09.004
更新日期:2005-04-01 00:00:00
abstract:OBJECTIVES:This study investigated trial consultations to identify whether and to what extent discussions of retention are present. STUDY DESIGN AND SETTING:This embedded mixed-methods study design included a purposive sample of audio-recorded trial consultations obtained from four sites of a large multicenter UK-base...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2020.03.011
更新日期:2020-07-01 00:00:00
abstract::A small variability of exposure in a population, for example small variance in nutrient intake, limits the power of an epidemiologic study. McKeown-Eyssen and Thomas (J Chron Dis 1985; 38:559-568) have shown that by selecting a population with larger exposure variance vs one with smaller variance, the study sample siz...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,评审
doi:10.1016/0895-4356(94)90190-2
更新日期:1994-08-01 00:00:00
abstract::Although previous studies document that blood pressure measured in the clinic may differ significantly from blood pressure recorded over 24 hours, the impact of these differences on patient selection for therapeutic drug trials is unknown. A placebo controlled double-blind evaluation of an experimental antihypertensiv...
journal_title:Journal of clinical epidemiology
pub_type: 临床试验,杂志文章
doi:10.1016/0895-4356(89)90046-2
更新日期:1989-01-01 00:00:00
abstract::The duration of protection offered by Pap screening for cervical cancer was examined using data on 101 cases of invasive cervical cancer and 396 controls from a Maryland case-control study. Receipt of a Pap test up to 4 years ago afforded significant protection, compared to women screened 11 or more years ago, or neve...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(89)90166-2
更新日期:1989-01-01 00:00:00
abstract::Criterion validity studies sometimes use designs with test-based enrollment schemes. In such incomplete studies, a Reference Instrument (RI) is applied to unequal sampling fractions of subjects previously identified as positives or negatives by a new Test Instrument (TI+ and TI-). Focusing on sensitivity (Se) and spec...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(03)00162-8
更新日期:2003-10-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Psychometrically sound questionnaires for the assessment of vision-related quality of life (QOL) are scarce. Therefore, the objective was to further validate two vision-related QOL questionnaires in a Dutch population of visually impaired elderly. METHODS:A total of 329 visually impaired older...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2005.04.007
更新日期:2005-12-01 00:00:00
abstract::The study assesses the reliability, validity and responsiveness of the UK version of the Seattle Angina Questionnaire (SAQ-UK). The instrument was anglicised and administered by self-completed postal questionnaire to 959 patients recruited from general practices in the North East of England. A total of 655 (68.3%) pat...
journal_title:Journal of clinical epidemiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0895-4356(01)00352-3
更新日期:2001-09-01 00:00:00
abstract:OBJECTIVE:The use of then-test (retrospective pre-test) scores has frequently been proposed as a solution to potential confounding of change scores because of response shift, as it is assumed that then-test and post-test responses are provided from the same perspective. However, this assumption has not been formally te...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jclinepi.2009.01.021
更新日期:2009-11-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to examine the proportion of men who died from prostate cancer (PrCa) vs. with PrCa and assess the comorbid conditions associated with other-cause deaths. STUDY DESIGN AND SETTING:We identified all male decedents aged >/=65 years in Jefferson County, AL, in 1993-1995. By crossli...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2003.11.009
更新日期:2004-07-01 00:00:00
abstract::Mortality rates of 22,995 Finnish men aged 25 and over followed up for a median of 12 years were analyzed in relation to body mass index (BMI) at the initial examination. All-cause mortality followed a "U"-shaped distribution, being greatest for the thinnest and fattest men at all ages, or about 1.5-fold for those wit...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(89)90076-0
更新日期:1989-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Podiatry (chiropody) services are one of the most frequently requested services in primary care. The elderly are given priority access to podiatry services in the UK blocking access for other priority groups. To evaluate the clinical and cost-effectiveness of a self-management program as a mea...
journal_title:Journal of clinical epidemiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0895-4356(03)00197-5
更新日期:2003-11-01 00:00:00
abstract:OBJECTIVE:Some authors of Cochrane overviews have also (co-)authored one or more of the underlying reviews. We examined the extent of dual (co-)authorship in Cochrane overviews, how it is dealt with, and whether the issue is raised in protocols. STUDY DESIGN:The Cochrane Library was searched for overviews and protocol...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2016.04.008
更新日期:2016-09-01 00:00:00
abstract::We investigated the value of the ankle-brachial systolic pressure index (ABPI) as a test for the diagnosis of peripheral arterial occlusive disease (PAOD) in general practice. ABPI measurements on 231 legs of 117 subjects performed in three general practice centers (GPC) were compared with the diagnostic conclusions o...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,多中心研究
doi:10.1016/s0895-4356(96)00275-2
更新日期:1996-12-01 00:00:00
abstract:OBJECTIVE:To address methodologic issues in searching for observational studies by presenting database search methods and results. STUDY DESIGN AND SETTING:Results of two literature searches for publications reporting on observational studies of alcohol consumption and the risk of breast cancer and large bowel cancer ...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/j.jclinepi.2005.03.004
更新日期:2005-09-01 00:00:00
abstract::A three-state Markov process is used to model a steady-state population. The classical P = ID equation is derived, as well as a number of identities originally reported by Miettinen (Am J Epidemiol 1976; 103: 226-235) and Freeman and Hutchison (Am J Epidemiol 1980; 112: 707-723. Ibid. 1986; 124: 134-149). Using theore...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/0895-4356(88)90009-1
更新日期:1988-01-01 00:00:00
abstract:OBJECTIVE:To determine whether zinc with oral rehydration solution (ORS) is more cost effective than ORS alone in the treatment of acute diarrhea. STUDY DESIGN AND SETTING:Cost-effectiveness analysis among patients consulting the emergency room of a government institution. METHOD:Cost of treatment and outcome of part...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jclinepi.2006.08.004
更新日期:2007-06-01 00:00:00
abstract::Medicine has been dominated by uncontrolled data, often of unproven validity and insufficient to answer clinically important questions pertaining to individual patients. Controlled clinical trials, when designed and conducted rigorously, offer advantages over uncontrolled data, but they cannot be done for everything a...
journal_title:Journal of clinical epidemiology
pub_type: 杂志文章
doi:10.1016/s0895-4356(98)00042-0
更新日期:1998-08-01 00:00:00