Population surveys using validated questionnaires provided useful information on the prevalence of maternal morbidities.


OBJECTIVES:To evaluate the ability of population surveys to estimate the occurrence of maternal morbidities. STUDY DESIGN AND SETTING:A literature search was conducted using MEDLINE, EMBASE, POPLINE references from relevant papers and proceedings of scientific meetings. No restrictions were made regarding language, date, design, journal, or country. Potentially relevant papers were independently evaluated by two reviewers. Eligible studies were critically evaluated, particularly with respect to complications: eclampsia and other hypertensive complications, hemorrhages, dystocias, and infections. The questions with the highest combined values for sensitivity and specificity were identified in each study. RESULTS:Seven hospital-based studies involving 2,907 women were included. The gold standard was the clinical records, and the validation strategy consisted of applying questionnaires and comparing them with the gold standard. Questions regarding eclampsia and other hypertensive complications performed satisfactorily in four studies; questions on dystocia and infection in two studies each, and questions regarding hemorrhagic complications in only one study. In general, when the actual prevalence of the condition is low (


J Clin Epidemiol


Souza JP,Parpinelli MA,Amaral E,Cecatti JG




Has Abstract


2008-02-01 00:00:00














  • STrengthening the Reporting of OBservational studies in Epidemiology--Molecular Epidemiology STROBE-ME: an extension of the STROBE statement.

    abstract::Advances in laboratory techniques have led to a rapidly increasing use of biomarkers in epidemiological studies. Biomarkers of internal dose, early biological change susceptibility and clinical outcomes are used as proxies for investigating the interactions between external and/or endogenous agents and body components...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Gallo V,Egger M,McCormack V,Farmer PB,Ioannidis JP,Kirsch-Volders M,Matullo G,Phillips DH,Schoket B,Stromberg U,Vermeulen R,Wild C,Porta M,Vineis P

    更新日期:2011-12-01 00:00:00

  • Toxic oil syndrome: survival in the whole cohort between 1981 and 1995.

    abstract:BACKGROUND AND OBJECTIVE:In 1981, toxic oil syndrome (TOS) appeared in Spain, affecting more than 20,000 persons and causing over 2500 deaths to date. Previous studies have addressed mortality only by gender and age. We analyzed possible prognostic factors in the survival of the cohort. METHODS:The study period was 1 ...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Sánchez-Porro Valadés P,Posada de la Paz M,de Andrés Copa P,Gimenez Ribota O,Abaitua Borda I

    更新日期:2003-07-01 00:00:00

  • Misclassification of exposure is high when interview data on drug use are used as a proxy measure of chronic drug use during follow-up.

    abstract:BACKGROUND AND OBJECTIVE:In many observational studies, the association between drugs and disease is analyzed with information from a baseline interview. We investigated the magnitude and direction of exposure misclassification by comparing interview data at baseline with prospectively gathered pharmacy data. METHODS:...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Beiderbeck AB,Sturkenboom MC,Coebergh JW,Leufkens HG,Stricker BH

    更新日期:2004-09-01 00:00:00

  • Systematic reviews reveal unrepresentative evidence for the development of drug formularies for poor and nonwhite populations.

    abstract:OBJECTIVE:To explore implications of using systematic drug class reviews to develop U.S. Medicaid drug formularies. We assess racial/ethnic, gender, and socioeconomic status (SES) concordance between Medicaid populations and studies synthesized in Drug Effectiveness Review Project (DERP) systematic reviews. STUDY DESI...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章,评审


    authors: Odierna DH,Bero LA

    更新日期:2009-12-01 00:00:00

  • Inadequate planning and reporting of adjudication committees in clinical trials: recommendation proposal.

    abstract:OBJECTIVES:Adjudication committees (ACs) are recommended in randomized controlled trials (RCTs) to standardize the assessment of events. We aimed to assess the reporting and functioning of ACs (synonyms: clinical event committees, endpoint committees) in clinical trials. STUDY DESIGN AND SETTING:We searched five high-...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章,评审


    authors: Dechartres A,Boutron I,Roy C,Ravaud P

    更新日期:2009-07-01 00:00:00

  • The International Continence Society (ICS) incontinence definition: is the social and hygienic aspect appropriate for etiologic research?

    abstract:OBJECTIVE:To investigate the effect of applying a problem assessment versus a pure symptom urinary incontinence (UI) caseness definition in etiologic research. SUBJECTS:A random population sample of 2613 women aged 30-59 years, who responded to a postal questionnaire. MAIN PARAMETERS: One-year period prevalence of the...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Foldspang A,Mommsen S

    更新日期:1997-09-01 00:00:00

  • The importance of severity of illness adjustment in predicting adverse outcomes in the Medicare population.

    abstract::The importance of using risk-adjusted mortality rates to measure quality of care is well-established. However, mortality rates may be an insensitive measure of quality for surgical patients since death is a relatively rare outcome. This study used Medicare files to identify, through chart abstraction, clinical postope...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Rosen AK,Ash AS,McNiff KJ,Moskowitz MA

    更新日期:1995-05-01 00:00:00

  • Zinc supplementation reduced cost and duration of acute diarrhea in children.

    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


    authors: Gregorio GV,Dans LF,Cordero CP,Panelo CA

    更新日期:2007-06-01 00:00:00

  • Breast cancer risk prediction with a log-incidence model: evaluation of accuracy.

    abstract:OBJECTIVE:We examined whether a breast cancer risk prediction model other than the Gail et al. model performs better at discriminating between women who will and who will not develop the disease. METHODS:We applied the two published versions of the Rosner and Colditz log-incidence model of breast cancer, developed on ...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Rockhill B,Byrne C,Rosner B,Louie MM,Colditz G

    更新日期:2003-09-01 00:00:00

  • "Precision" and "accuracy": two terms that are neither.

    abstract:OBJECTIVE:In some publications, the terms "precision" and "accuracy" are used as if they were synonyms for "reliability" and "validity." METHODS AND RESULTS:This article shows that these terms are neither precise nor accurate when used in this way. Scales can demonstrate high test-retest or interrater reliability (i.e...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章,评审


    authors: Streiner DL,Norman GR

    更新日期:2006-04-01 00:00:00

  • Using decision thresholds for ranking treatments in network meta-analysis results in more informative rankings.

    abstract:OBJECTIVES:To evaluate how the rank probabilities obtained from network meta-analysis (NMA) change with the use of increasingly stringent criteria for the relative effect comparing two treatments which ranks one treatment better than the other. STUDY DESIGN AND SETTING:Systematic survey and reanalysis of published dat...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Brignardello-Petersen R,Johnston BC,Jadad AR,Tomlinson G

    更新日期:2018-06-01 00:00:00

  • Multiple imputation was an efficient method for harmonizing the Mini-Mental State Examination with missing item-level data.

    abstract:OBJECTIVE:The Mini-Mental State Examination (MMSE) is used to estimate current cognitive status and as a screen for possible dementia. Missing item-level data are commonly reported. Attention to missing data is particularly important. However, there are concerns that common procedures for dealing with missing data, for...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Burns RA,Butterworth P,Kiely KM,Bielak AA,Luszcz MA,Mitchell P,Christensen H,Von Sanden C,Anstey KJ

    更新日期:2011-07-01 00:00:00

  • Testing the equivalence of translations of widely used response choice labels: results from the IQOLA Project. International Quality of Life Assessment.

    abstract::The similarity in meaning assigned to response choice labels from the SF-36 Health Survey (SF-36) was evaluated across countries. Convenience samples of judges (range, 10 to 117; median = 48) from 13 countries rated translations of response choice labels, using a variation of the Thurstone method of equal appearing in...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Keller SD,Ware JE Jr,Gandek B,Aaronson NK,Alonso J,Apolone G,Bjorner JB,Brazier J,Bullinger M,Fukuhara S,Kaasa S,Leplège A,Sanson-Fisher RW,Sullivan M,Wood-Dauphinee S

    更新日期:1998-11-01 00:00:00

  • Combining ecological and individual variables to reduce confounding by indication: case study--subarachnoid hemorrhage treatment.

    abstract::Ecological studies may reduce the problem of confounding by indication; however, these studies introduce new biases not present in individual-level analyses. To study the potential for ecological variables to reduce confounding by indication, we used a large database of admissions for ruptured cerebral aneurysms to ev...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章,多中心研究


    authors: Johnston SC

    更新日期:2000-12-01 00:00:00

  • More medical journals should inform their contributors about three key principles of graph construction.

    abstract:OBJECTIVES:To identify key principles of graph construction and to review guidance on graph construction provided by medical journals. STUDY DESIGN AND SETTING:Review of a prevailing model of graph comprehension and survey of authors' instructions for all 120 core medical journals as indexed by PubMed. RESULTS:Graph ...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Puhan MA,ter Riet G,Eichler K,Steurer J,Bachmann LM

    更新日期:2006-10-01 00:00:00

  • Good agreement between parental and self-completed questionnaires about allergic diseases and environmental factors in teenagers.

    abstract:OBJECTIVES:To study whether the methodological change from parent to index subject as questionnaire respondent affected the prevalence estimates and risk factor patterns for allergic diseases in a longitudinal study. STUDY DESIGN AND SETTING:A prospective study of asthma and allergic diseases among children was begun ...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Hedman L,Bjerg A,Perzanowski M,Rönmark E

    更新日期:2010-07-01 00:00:00

  • Developing a condition-specific measure of health for patients with dyspepsia and ulcer-related symptoms.

    abstract::A patient-administered instrument for dyspepsia and symptoms suggestive of duodenal or gastric ulcer, based on the type of questions asked when taking a patient's history, was developed and tested using the following steps: literature reviews, devising the questions, testing the responses to the questions using factor...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Garratt AM,Ruta DA,Russell I,Macleod K,Brunt P,McKinlay A,Mowat A,Sinclair T

    更新日期:1996-05-01 00:00:00

  • The Internet is valid and reliable for child-report: an example using the Activities Scale for Kids (ASK) and the Pediatric Quality of Life Inventory (PedsQL).

    abstract:OBJECTIVE:This study tested the impact of web administration on well-established measures of children's physical function and quality of life. STUDY DESIGN AND SETTING:Participants were recruited from clinics at six hospitals. They completed the Activities Scale for Kids (ASK) and the Pediatric Quality of Life Invento...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章,多中心研究


    authors: Young NL,Varni JW,Snider L,McCormick A,Sawatzky B,Scott M,King G,Hetherington R,Sears E,Nicholas D

    更新日期:2009-03-01 00:00:00

  • The true treatment benefit is unpredictable in clinical trials using surrogate outcome measured with diagnostic tests.

    abstract:BACKGROUND AND OBJECTIVES:Clinical trials increasingly use results of diagnostic tests as surrogate outcomes. Our objective was to answer the following questions: (1) is the parameter measured by the reference standard a valid surrogate? (2) How does the tests accuracy influence the estimate of the treatment benefit on...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章,评审


    authors: Kassaï B,Shah NR,Leizorovicza A,Cucherat M,Gueyffier F,Boissel JP

    更新日期:2005-10-01 00:00:00

  • Test-retest of self-reported exposure to artificial tanning devices, self-tanning creams, and sun sensitivity showed consistency.

    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


    authors: Beane Freeman LE,Dennis LK,Lynch CF,Lowe JB,Clarke WR

    更新日期:2005-04-01 00:00:00

  • Potentially unnecessary and wasteful clinical trial research detected in cumulative meta-epidemiological and trial sequential analysis.

    abstract:OBJECTIVE:The objective was to estimate the presence and extent to which potentially unnecessary and therefore maybe wasteful clinical trials regarding relevant interventions and outcomes in major clinical areas had been conducted. STUDY DESIGN AND SETTING:From current Cochrane collaboration systematic reviews in majo...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Storz-Pfennig P

    更新日期:2017-02-01 00:00:00

  • Clinical replicability of rehabilitation interventions in randomized controlled trials reported in main journals is inadequate.

    abstract:OBJECTIVE:The objective of this study was to study if randomized controlled trials (RCTs) in rehabilitation (a field where complex interventions prevail) published in main journals include all the details needed to replicate the intervention in clinical practice (clinical replicability). STUDY DESIGN AND SETTING:Forty...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Negrini S,Arienti C,Pollet J,Engkasan JP,Francisco GE,Frontera WR,Galeri S,Gworys K,Kujawa J,Mazlan M,Rathore FA,Schillebeeckx F,Kiekens C,REREP study participants.

    更新日期:2019-10-01 00:00:00

  • GRADE guidelines 27: how to calculate absolute effects for time-to-event outcomes in summary of findings tables and Evidence Profiles.

    abstract:OBJECTIVES:To provide GRADE guidance on how to prepare Summary of Findings tables and Evidence Profiles for time-to-event outcomes with a focus on the calculation of the corresponding absolute effect estimates. STUDY DESIGN AND SETTING:This guidance was justified by a research project identifying frequent errors and l...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Skoetz N,Goldkuhle M,van Dalen EC,Akl EA,Trivella M,Mustafa RA,Nowak A,Dahm P,Schünemann H,Bender R,GRADE Working Group.

    更新日期:2020-02-01 00:00:00

  • The effect of local recurrence on survival time in adult high-grade soft tissue sarcomas.

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    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Emrich LJ,Ruka W,Driscoll DL,Karakousis CP

    更新日期:1989-01-01 00:00:00

  • Using reference values to define disease based on the lower limit of normal biased the population attributable fraction, but not the population excess risk: the example of chronic airflow obstruction.

    abstract:BACKGROUND:The impact of disease on population health is most commonly estimated by the population attributable fraction (PAF), or less commonly by the excess risk, an alternative measure that estimates the absolute risk of disease in the population that can be ascribed to the exposure. Using chronic airflow obstructio...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Burney P,Minelli C

    更新日期:2018-01-01 00:00:00

  • Reliability of Bayesian probability analysis for predicting coronary artery disease in a veterans hospital.

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    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Detrano R,Guppy KH,Abbassi N,Janosi A,Sandhu S,Froelicher V

    更新日期:1988-01-01 00:00:00

  • Priority-based initiative for updating existing evidence-based clinical practice guidelines: the results of two iterations.

    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


    authors: Agbassi C,Messersmith H,McNair S,Brouwers M

    更新日期:2014-12-01 00:00:00

  • Users identified challenges in applying GRADE to complex interventions and suggested an extension to GRADE.

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    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Movsisyan A,Melendez-Torres GJ,Montgomery P

    更新日期:2016-02-01 00:00:00

  • The validity of single-item, self-assessment questions as measures of adult physical activity.

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    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Weiss TW,Slater CH,Green LW,Kennedy VC,Albright DL,Wun CC

    更新日期:1990-01-01 00:00:00

  • Modelling the relative risk of esophageal cancer in a case-control study.

    abstract::The aim of this paper was to evaluate the combined effect of alcohol, smoking habits and frequency of consumption of selected dietary items, which are the major sources of retinoids and beta-carotene in the Italian diet, on the risk of esophageal cancer (EC). The adequacy of the multiplicative structure for describing...

    journal_title:Journal of clinical epidemiology

    pub_type: 杂志文章


    authors: Valsecchi MG

    更新日期:1992-04-01 00:00:00