Abstract:
BACKGROUND:Precise predictions of incidence and mortality rates due to breast cancer (BC) are required for planning of public health programs as well as for clinical services. A number of approaches has been established for prediction of mortality using stochastic models. The performance of these models intensely depends on different patterns shown by mortality data in different countries. METHODS:The BC mortality data is retrieved from the Global burden of disease (GBD) study 2017 database. This study include BC mortality rates from 1990 to 2017, with ages 20 to 80+ years old women, for different Asian countries. Our study extend the current literature on Asian BC mortality data, on both the number of considered stochastic mortality models and their rigorous evaluation using multivariate Diebold-Marino test and by range of graphical analysis for multiple countries. RESULTS:Study findings reveal that stochastic smoothed mortality models based on functional data analysis generally outperform on quadratic structure of BC mortality rates than the other lee-carter models, both in term of goodness of fit and on forecast accuracy. Besides, smoothed lee carter (SLC) model outperform the functional demographic model (FDM) in case of symmetric structure of BC mortality rates, and provides almost comparable results to FDM in within and outside data forecast accuracy for heterogeneous set of BC mortality rates. CONCLUSION:Considering the SLC model in comparison to the other can be obliging to forecast BC mortality and life expectancy at birth, since it provides even better results in some cases. In the current situation, we can assume that there is no single model, which can truly outperform all the others on every population. Therefore, we also suggest generating BC mortality forecasts using multiple models rather than relying upon any single model.
journal_name
BMC Med Res Methodoljournal_title
BMC medical research methodologyauthors
Mubarik S,Hu Y,Yu Cdoi
10.1186/s12874-020-01187-5subject
Has Abstractpub_date
2020-12-09 00:00:00pages
299issue
1issn
1471-2288pii
10.1186/s12874-020-01187-5journal_volume
20pub_type
杂志文章abstract:BACKGROUND:Self-administered questionnaires are becoming increasingly common in general practice. Much research has explored methods to increase response rates but comparatively few studies have explored the effect of questionnaire administration on reported answers. METHODS:The aim of this study was to determine the ...
journal_title:BMC medical research methodology
pub_type: 杂志文章,随机对照试验
doi:10.1186/1471-2288-8-42
更新日期:2008-06-27 00:00:00
abstract:BACKGROUND:Clinical practice guidelines have become increasingly widely used to guide quality improvement of clinical practice. Qualitative research may be a useful way to improve the quality and implementation of guidelines. The methodology for qualitative evidence used in guidelines development is worthy of further r...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-020-01041-8
更新日期:2020-06-17 00:00:00
abstract:BACKGROUND:Multilevel models for non-normal outcomes are widely used in medical and health sciences research. While methods for interpreting fixed effects are well-developed, methods to quantify and interpret random cluster variation and compare it with other sources of variation are less established. Random cluster va...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-018-0517-7
更新日期:2018-07-06 00:00:00
abstract:BACKGROUND:Spiritual care is defined as recognizing and responding to the needs of the human spirit when the individual is facing trauma, illness, or sadness. Providing spiritual care is one of the core aspects of holistic care, as it is significantly associated with patients' quality of life. The provision of optimal ...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-019-0662-7
更新日期:2019-01-23 00:00:00
abstract::Clinical Decision Support Systems (CDSS) provide aid in clinical decision making and therefore need to take into consideration human, data interactions, and cognitive functions of clinical decision makers. The objective of this paper is to introduce a high level reference model that is intended to be used as a foundat...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-018-0587-6
更新日期:2018-11-16 00:00:00
abstract:BACKGROUND:The development of risk prediction models is of increasing importance in medical research - their use in practice, however, is rare. Among other reasons this might be due to the fact that thorough validation is often lacking. This study focuses on two Bayesian approaches of how to validate a prediction rule ...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-12-99
更新日期:2012-07-20 00:00:00
abstract:BACKGROUND:Clinical quality registries and other systems that conduct routine post-discharge surveillance of patient outcomes following surgery may have difficulty surveying patients who have limited proficiency in the language of the healthcare provider. Interpreter proxies (family and carers) are often used due to li...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-019-0854-1
更新日期:2019-11-14 00:00:00
abstract:BACKGROUND:Glaucoma is a leading cause of avoidable blindness worldwide. Open angle glaucoma is the most common type of glaucoma. No randomised controlled trials have been conducted evaluating the effectiveness of glaucoma screening for reducing sight loss. It is unclear what the most appropriate intervention to be eva...
journal_title:BMC medical research methodology
pub_type: 临床试验,杂志文章
doi:10.1186/1471-2288-11-54
更新日期:2011-04-21 00:00:00
abstract:BACKGROUND:Diagnostic problems in clinical trials are sometimes ordinal. For example, colon tumor staging was performed according to the TNM classification. However, clinical data are limited by markedly small sample sizes in some stage. METHODS:We propose a distribution-free test for detecting ordered alternatives in...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-13-148
更新日期:2013-12-05 00:00:00
abstract:BACKGROUND:The collection of individual-level pandemic (H1N1) 2009 influenza immunization data was considered important to facilitate optimal vaccine delivery and accurate assessment of vaccine coverage. These data are also critical for research aimed at evaluating the new vaccine's safety and effectiveness. Systems us...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-10-51
更新日期:2010-06-08 00:00:00
abstract:BACKGROUND:Sickness absence (SA) is an important social, economic and public health issue. Identifying and understanding the determinants, whether biological, regulatory or, health services-related, of variability in SA duration is essential for better management of SA. The conditional frailty model (CFM) is useful whe...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-13-114
更新日期:2013-09-16 00:00:00
abstract:BACKGROUND:One of the main challenges for drug evaluation in rare diseases is the often heterogeneous course of these diseases. Traditional outcome measures may not be applicable for all patients, when they are in different stages of their disease. For instance, in Duchenne Muscular Dystrophy, the Six Minute Walk Test ...
journal_title:BMC medical research methodology
pub_type: 杂志文章,评审
doi:10.1186/s12874-016-0205-4
更新日期:2016-08-17 00:00:00
abstract:BACKGROUND:To determine if the search technique that is used to sample randomized controlled trial (RCT) manuscripts from a field of medical science can influence the measurement of the change in quality over time in that field. METHODS:RCT manuscripts in the field of brain injury were identified using two readily-ava...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-5-7
更新日期:2005-02-07 00:00:00
abstract:BACKGROUND:Patient-reported outcomes (PRO) are important as endpoints in clinical trials and epidemiological studies. Guidelines for the development of PRO instruments and analysis of PRO data have emphasized the need to report methods used for sample size planning. The Raschpower procedure has been proposed for sample...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-015-0011-4
更新日期:2015-03-15 00:00:00
abstract:BACKGROUND:Sero- prevalence studies often have a problem of missing data. Few studies report the proportion of missing data and even fewer describe the methods used to adjust the results for missing data. The objective of this review was to determine the analytical methods used for analysis in HIV surveys with missing ...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-020-00944-w
更新日期:2020-03-14 00:00:00
abstract:BACKGROUND:The BSI-18 contains the three six-item scales somatization, depression, and anxiety as well as the Global Severity Index (GSI), including all 18 items. The BSI-18 is the latest and shortest of the multidimensional versions of the Symptom-Checklist 90-R, but its psychometric properties have not been sufficien...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-016-0283-3
更新日期:2017-01-26 00:00:00
abstract:BACKGROUND:Researchers and policy makers have determined that accounting for productivity costs, or "indirect costs," may be as important as including direct medical expenditures when evaluating the societal value of health interventions. These costs are also important when estimating the global burden of disease. The ...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-12-87
更新日期:2012-06-25 00:00:00
abstract:BACKGROUND:Route environments can positively influence people's active commuting and thereby contribute to public health. The Active Commuting Route Environment Scale (ACRES) was developed to study active commuters' perceptions of their route environments. However, bicycle commuters represent a small portion of the pop...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-11-6
更新日期:2011-01-17 00:00:00
abstract:BACKGROUND:Thresholds for statistical significance are insufficiently demonstrated by 95% confidence intervals or P-values when assessing results from randomised clinical trials. First, a P-value only shows the probability of getting a result assuming that the null hypothesis is true and does not reflect the probabilit...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-14-34
更新日期:2014-03-04 00:00:00
abstract:BACKGROUND:Typically, randomization software should allow users to exert control over the different aspects of randomization including block design, provision of unique identifiers and control over the format and type of program output. While some of these characteristics have been addressed by available software, none...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-4-26
更新日期:2004-11-09 00:00:00
abstract:BACKGROUND:To accurately predict the response to treatment, we need a stable and effective risk score that can be calculated from patient characteristics. When we evaluate such risks from time-to-event data with right-censoring, Cox's proportional hazards model is the most popular for estimating the linear risk score. ...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-020-01063-2
更新日期:2020-07-06 00:00:00
abstract:BACKGROUND:The longitudinal birth cohort study is the preferred design for studies of childhood health, particularly atopic disease. Still, prospective data collection depends on recollection of the medical history since the previous visit representing a potential recall-bias. We aimed to ascertain the quality of infor...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-12-160
更新日期:2012-10-22 00:00:00
abstract:BACKGROUND:Quantitative survey of research articles, as an application of bibliometrics, is an effective tool for grasping overall trends in various medical research fields. This type of survey has been also applied to infectious disease research; however, previous studies were insufficient as they underestimated artic...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-9-67
更新日期:2009-10-06 00:00:00
abstract:BACKGROUND:Technical advances following the Human Genome Project revealed that high-quality and -quantity DNA may be obtained from whole saliva samples. However, usability of previously collected samples and the effects of environmental conditions on the samples during collection have not been assessed in detail. In fi...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-11-170
更新日期:2011-12-19 00:00:00
abstract:BACKGROUND:Within cancer care, dynamic evaluations of the loss in expectation of life provides useful information to patients as well as physicians. The loss of lifetime function yields the conditional loss in expectation of life given survival up to a specific time point. Due to the inevitable censoring in time-to-eve...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-019-0661-8
更新日期:2019-01-28 00:00:00
abstract:BACKGROUND:Centralisation of thrombolysis may offer substantial benefits. The aim of this study was to assess short term costs and effects of centralisation of thrombolysis and optimised care in a decentralised system. METHODS:Using simulation modelling, three scenarios to improve decentralised settings in the North o...
journal_title:BMC medical research methodology
pub_type: 杂志文章,多中心研究
doi:10.1186/s12874-016-0275-3
更新日期:2017-01-10 00:00:00
abstract:BACKGROUND:Network meta-analysis can be used to combine results from several randomized trials involving more than two treatments. Potential inconsistency among different types of trial (designs) differing in the set of treatments tested is a major challenge, and application of procedures for detecting and locating inc...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-14-61
更新日期:2014-05-10 00:00:00
abstract:BACKGROUND:Outcomes in observational studies may not best estimate those expected in the HIV vaccine efficacy trials. We compared retention in Simulated HIV Vaccine Efficacy Trials (SiVETs) and observational cohorts drawn from two key populations in Uganda. METHODS:Two SiVETs were nested within two observational cohor...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-020-00920-4
更新日期:2020-02-12 00:00:00
abstract:BACKGROUND:Plasma cell dyscrasias (PCD) are a spectrum of disorders resulting from the clonal expansion of plasma cells, ranging from the pre-malignant condition monoclonal gammopathy of undetermined significance (MGUS) to multiple myeloma (MM). MM generates a significant burden of disease on the community and it is pr...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/s12874-016-0250-z
更新日期:2016-11-09 00:00:00
abstract:BACKGROUND:International clinical trials are now rapidly expanding into Asia. However, the proportion of global trials is higher in South Korea compared to Japan despite implementation of similar governmental support in both countries. The difference in clinical trial environment might influence the respective physicia...
journal_title:BMC medical research methodology
pub_type: 杂志文章
doi:10.1186/1471-2288-13-130
更新日期:2013-10-25 00:00:00