Abstract：
OBJECTIVE:To assess measurement equivalence of the Singaporean English and Chinese versions of the EuroQol Group's 5-domain questionnaire (EQ-5D) in cancer patients. STUDY DESIGN AND SETTING:Seven hundred and seventy-one ethnic Chinese patients in Singapore were recruited, and they answered either an English or a Chinese version of the EQ-5D. Seven days later, a similar questionnaire in the same language was mailed to the patients. Regression analysis was used to assess equivalence of the mean values obtained by using the two language versions. The validity, responsiveness to change, and reliability of the two versions of the EQ-5D were assessed and compared. RESULTS:Based on the prespecified equivalence margin of +/-10% for binary outcome, +/-0.05 for utility index, and +/-5 points in the visual analog scale, the two language versions of the EQ-5D gave equivalent mean values at item and scale levels. They also showed similar characteristics in validity, responsiveness, and reliability. For example, the test-retest reliability values for the EQ-5D utility index in the two language samples were identical in two significant digits: 0.79. CONCLUSION:The Singaporean English and Chinese versions of the EQ-5D were validated in cancer patients and were shown to achieve measurement equivalence.
journal_name
J Clin Epidemioljournal_title
Journal of clinical epidemiologyauthors
Gao F,Ng GY,Cheung YB,Thumboo J,Pang G,Koo WH,Sethi VK,Wee J,Goh Cdoi
10.1016/j.jclinepi.2008.03.007subject
Has Abstractpub_date
2009-02-01 00:00:00pages
206-13issue
2eissn
0895-4356issn
1878-5921pii
S0895-4356(08)00094-2journal_volume
62pub_type
杂志文章abstract：:The Cochrane Qualitative and Implementation Methods Group develops and publishes guidance on the synthesis of qualitative and mixed-method implementation evidence. Choice of appropriate methodologies, methods, and tools is essential when developing a rigorous protocol and conducting the synthesis. Cochrane authors who...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2017.06.020
更新日期：2018-05-01 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：:We investigated the relationship between antihypertensive drug treatment of hypertensives and their mean serum lipid concentrations in population based studies in Germany. Data from three surveys (Luebeck Blood Pressure Study (LBS) of 1984, MONICA Augsburg Survey I of 1984/85, MONICA Augsburg Survey II of 1989/90), ob...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(92)90204-z
更新日期：1992-12-01 00:00:00
abstract：:Trialists argue about the usefulness of stratified randomization. For investigators designing trials and readers who use them, the argument has created uncertainty regarding the importance of stratification. In this paper, we review stratified randomization to summarize its purpose, indications, accomplishments, and a...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/s0895-4356(98)00138-3
更新日期：1999-01-01 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：:We investigated asthma morbidity in children and adults among Registered Indians in Saskatchewan using hospitalization data for 1970-1989. In Registered Indians, significant increases were observed in the asthma hospitalization rates from 1979 to 1989 in boys and girls under 4 years, boys aged 5-14 years, and female a...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(95)00019-z
更新日期：1995-10-01 00:00:00
abstract：OBJECTIVES:The objective of this study was to determine the applicability of utilizing the N-of-1 method for deprescribing trials in older adults. STUDY DESIGN AND SETTING:Systematic review of any human studies conducted in older adults (≥50 years), deprescribing any long-term treatment over less than a year using the...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2017.09.015
更新日期：2018-01-01 00:00:00
abstract：OBJECTIVES:To examine whether the number of early online accesses to medical research articles predicts citations in the scientific literature over time. STUDY DESIGN AND SETTING:Cohort study of research articles published in the BMJ between January and June 1999. The number of online assesses within 1 week of publica...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2015.01.024
更新日期：2015-12-01 00:00:00
abstract：OBJECTIVES:Timely and comprehensive reporting of clinical trial results builds the backbone of evidence-based medicine and responsible research. The proportion of timely disseminated trial results can inform alternative national and international benchmarking of university medical centers (UMCs). STUDY DESIGN AND SETT...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2019.06.002
更新日期：2019-11-01 00:00:00
abstract：OBJECTIVE:Adding risk factors to a prediction model often increases the area under the receiver operating characteristic curve (AUC) only slightly, particularly when the AUC of the model was already high. We investigated whether a risk factor that minimally improves the AUC may nevertheless improve the predictive abili...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2016.07.002
更新日期：2016-11-01 00:00:00
abstract：:To have the "power" of avoiding undersized clinical trials, the customary statistical strategy used in the past few decades is aimed at rejecting both a null stochastic hypothesis and a contradictory alternative hypothesis. This approach gives a trial the "power" to confirm the "insignificance" of differences much sma...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(98)00029-8
更新日期：1998-07-01 00:00:00
abstract：:We performed analyses to examine the structure, validity, and responsiveness to change of the Marks Asthma Quality of Life Questionnaire (AQLQ), originally validated in Australia in a self-administered format, among 539 U.S. subjects with asthma. Subjects were interviewed twice by telephone over an 18-month period. Ba...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(99)00026-8
更新日期：1999-07-01 00:00:00
abstract：OBJECTIVES:If researchers want to assess reliably different aspects of general health in the migrant populations, they need translations of internationally used health assessment scales with appropriate cross-cultural adaptations and satisfactory psychometric properties. A systematic review was performed to assess the ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2012.12.004
更新日期：2013-06-01 00:00:00
abstract：:Articles alleging hazards of electric or magnetic fields, based on epidemiologic studies, have appeared in the popular press. Some of these articles, which contain distortions of the scientific evidence, have been cited in the scientific and medical literature, thereby being given some degree of apparent legitimacy. I...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(92)90154-f
更新日期：1992-10-01 00:00:00
abstract：:Three issues concerning the design and analysis of randomized behavioral intervention studies are illustrated and discussed within the framework of a tobacco and alcohol prevention trial among migrant Latino adolescents. The first issue arises when subjects are randomized in clusters rather than individually. Because ...
journal_title：Journal of clinical epidemiology
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：10.1016/s0895-4356(03)00012-x
更新日期：2003-04-01 00:00:00
abstract：:Sarcoidosis is a chronic granulomatous disorder of unknown cause, characterized by activation of T-lymphocytes and macrophages. A Case Control Etiologic Study of Sarcoidosis (ACCESS) is a multicenter study designed to determine the etiology of sarcoidosis. The study organization includes 10 Clinical Centers, a Clinica...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,多中心研究
doi：10.1016/s0895-4356(99)00142-0
更新日期：1999-12-01 00:00:00
abstract：:Whether or not to treat patients with non-rheumatic atrial fibrillation with anticoagulants to prevent embolic stroke is a dilemma for physicians. If randomized trials, currently underway, demonstrate a beneficial effect, the dilemma will not be solved because not all of the relevant factors can be addressed by trials...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(91)90219-y
更新日期：1991-01-01 00:00:00
abstract：:Associations of baseline one-hour postload plasma glucose with 22-year coronary heart disease, stroke, cardiovascular diseases, and all cause mortality were assessed in five age-specific cohorts of nondiabetic men and women from the Chicago Heart Association Detection Project in Industry: 10,269 men ages 18-39 years; ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(97)00201-1
更新日期：1997-12-01 00:00:00
abstract：:Biologic studies have suggested that antidepressant use may increase breast cancer risk. We conducted a systematic review of trials and controlled epidemiologic studies to assess this association. Pooled data from 31 primary efficacy drug company trials of fluoxetine suggested no increased risk but the short duration ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/s0895-4356(02)00568-1
更新日期：2003-02-01 00:00:00
abstract：:A large sample of older participants of the Maastricht Aging Study (MAAS) were compared to drop-outs at the 3-year follow-up with respect to socio-demographic, health, and cognitive characteristics. In addition, the impact of selective drop-out on measures of cognitive change was examined. To this end, hypothetical sc...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/s0895-4356(01)00473-5
更新日期：2002-03-01 00:00:00
abstract：OBJECTIVES:Disinvestment is critical for ensuring the long-term sustainability of health-care services. Key barriers to disinvestment are heterogeneity between research and clinical settings, absence of evidence of effectiveness of some health technologies, and exposure of patients and organizations to risks and poor o...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/j.jclinepi.2013.08.014
更新日期：2014-02-01 00:00:00
abstract：:Angina pectoris (AP) as determined by the Rose questionnaire was assessed in nearly 16,000 black and white men and women participating in the Atherosclerosis Risk in communities Study, a population study of cardiovascular disease in four communities. The questionnaire was administered at yearly intervals and estimates...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(96)00022-4
更新日期：1996-07-01 00:00:00
abstract：:The incidence and mortality due to the major cancers such as lung, breast, colon-rectum, prostate, and ovary have changed very little over the past 20-30 years, in spite of the introduction of important new treatments and apparent prolongation of survival of patients with these cancers. The new strategies focus on ear...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/0895-4356(94)90205-4
更新日期：1994-06-01 00:00:00
abstract：BACKGROUND AND OBJECTIVE:Novel cancer therapies are often approved with evidence from a single pivotal trial alone. There are concerns about the credibility of this evidence. Higher validity may be indicated by five methodological and statistical characteristics of pivotal trial evidence that were described by the U.S....
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2019.05.033
更新日期：2019-10-01 00:00:00
abstract：OBJECTIVES:New evidence continues to emerge and requires attention after the release of a clinical practice guideline (CPG). The objective of this article is to describe the Document Assessment and Review (DAR) strategy designed to ensue that the CPGs remain current and their quality maintained and to present the resul...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2014.06.013
更新日期：2014-12-01 00:00:00
abstract：BACKGROUND:There is no population-based prospective study concerning the relation between serum albumin and mortality in a non-Western population, and few previous studies included the subgroup analysis stratified by serum cholesterol level. METHODS:A 13.7-year cohort study was conducted on 6,957 males and females age...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2004.02.019
更新日期：2004-11-01 00:00:00
abstract：:Although the placebo in a clinical trial is often considered simply a baseline against which to evaluate the efficacy of a clinical intervention, there is evidence that the magnitude of placebo effect may be a critical factor in determining the results of a trial. This article examines the question of whether devices ...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章,评审
doi：10.1016/s0895-4356(00)00206-7
更新日期：2000-08-01 00:00:00
abstract：OBJECTIVES:This study compares three major elements of evidence-based medicine (EBM) practices, namely evidence synthesis, clinical practice guidelines (CPGs), and real-world prescriptions in the United States, regarding antidepressant treatments of major depression over the past 3 decades. STUDY DESIGN AND SETTING:We...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2020.12.023
更新日期：2021-01-06 00:00:00
abstract：OBJECTIVES:To develop a theory-led framework to inform reviewers' understanding of what, how, and why health care interventions may lead to differential effects across socioeconomic groups. STUDY DESIGN AND SETTING:A metaframework approach combined two theoretical perspectives (socioeconomic health inequalities and co...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2018.08.008
更新日期：2018-12-01 00:00:00
abstract：BACKGROUND AND OBJECTIVE:Reference limits are widely used in anthropometry, the behavioral sciences, medicine, and clinical chemistry. They describe the distribution of a quantitative variable in a healthy population, and are often a smooth function of age or another determinant. Thus, instead of estimating reference l...
journal_title：Journal of clinical epidemiology
pub_type： 杂志文章
doi：10.1016/j.jclinepi.2006.09.004
更新日期：2007-06-01 00:00:00
