Sampling (statistics) The sampling process comprises several stages: Successful statistical practice is based on focused problem definition. In sampling, this includes defining the population from which our sample is drawn. A population can be defined as including all people or items with the characteristic one wishes to understand. Because there is very rarely enough time or money to gather information from everyone or everything in a population, the goal becomes finding a representative sample (or subset) of that population.
Cambridge Journals Online - Abstract - Vitamin status in different groups of the Spanish population: a meta-analysis of national studies performed between 1990 and 1999
ScienceDirect.com - Journal of Clinical Epidemiology - Development quality criteria to evaluate nontherapeutic studies of incidence, prevalence, or risk factors of chronic diseases: pilot study of new checklists
Form B-1: Data extraction form for studies on manifestations of chronic insomnia in adults Form B-2: Data extraction form for studies on management of chronic insomnia in adults Form B-3: Quality assessment form for studies on prevalence or incidence of chronic insomnia in adults Form B-4: Quality assessment form for cohort studies on manifestations of chronic insomnia in adults Form B-5: Quality assessment form for case-control studies on manifestations of chronic Insomnia in adults Form B-6: Quality assessment form for studies on management of chronic insomnia in adults Appendix B: Data Extraction and Quality Assessment Forms - Manifestations and Management of Chronic Insomnia in Adults - NCBI Bookshelf
A systematic review of prevalence studies of depression in Parkinson's disease - Reijnders - 2007 - Movement Disorders - Wiley Online Library
WHO systematic review of maternal mortality and morbidity: methodological issues and challenges Abstract Background Reducing maternal mortality and morbidity are among the key international development goals. A prerequisite for monitoring the progress towards attainment of these goals is accurate assessment of the levels of mortality and morbidity. In order to contribute to mapping the global burden of reproductive ill-health, we are conducting a systematic review of incidence and prevalence of maternal mortality and morbidity. Methods
The worldwide incidence of preterm birth: a systematic review of maternal mortality and morbidity Incidence mondiale de la naissance avant terme : revue systématique de la mortalité et de la morbidité maternelle Incidencia mundial de parto prematuro: revisión sistemática de la morbilidad y mortalidad maternas Stacy BeckI; Daniel WojdylaII; Lale SayIII,*; Ana Pilar BetranIII; Mario MerialdiIII; Jennifer Harris RequejoIV; Craig RubensV; Ramkumar MenonVI; Paul FA Van LookVII Bulletin of the World Health Organization - The worldwide incidence of preterm birth: a systematic review of maternal mortality and morbidity
Systematic review of prevalence studies of autism spectrum disorders Main findings As expected, a large amount of variation in prevalence across studies was found by graphical representation of estimates and by indices of heterogeneity. Despite this wide variation, pooled estimates are useful to indicate the public health burden of the disorder.
Cited Ref Search_WoK5
PRISMA Welcome to the PRISMA Statement website PRISMA stands for Preferred Reporting Items for Systematic Reviews and Meta-Analyses. It is an evidence-based minimum set of items for reporting in systematic reviews and meta-analyses. The aim of the PRISMA Statement is to help authors improve the reporting of systematic reviews and meta-analyses. We have focused on randomized trials, but PRISMA can also be used as a basis for reporting systematic reviews of other types of research, particularly evaluations of interventions. PRISMA may also be useful for critical appraisal of published systematic reviews, although it is not a quality assessment instrument to gauge the quality of a systematic review.
STROBE Statement: Home
www.sph.emory.edu/cms/departments_centers/gh/documents/reporting observational studies.pdf
Critical Appraisal of the Health Research Literature: Prevalence or Incidence of a Health Problem Critical Appraisal of Studies 1. Study Design and Sampling Method: Are the study design and sampling method appropriate for the research question?
www.sphsu.mrc.ac.uk/Evidence/Research/Review 08/website task structure protocol.pdf
Systematic Reviews in Health Care - Cambridge Books Online - Cambridge University Press
Background Understanding the prevalence of schizophrenia has important implications for both health service planning and risk factor epidemiology. The aims of this review are to systematically identify and collate studies describing the prevalence of schizophrenia, to summarize the findings of these studies, and to explore selected factors that may influence prevalence estimates. A Systematic Review of the Prevalence of Schizophrenia