Lack of interchangeability between visual analogue and verbal rating pain scales: a cross sectional description of pain etiology groups
2005; 5: 31
Methods for confidence interval estimation of a ratio parameter with application to location quotients
2005; 5: 32
Investing in updating: how do conclusions change when Cochrane systematic reviews are updated?
2005; 5: 33
A randomised controlled trial to assess the effectiveness of offering study results as an incentive to increase response rates to postal questionnaires [ISRCTN26118436]
2005; 5: 34
A non-parametric framework for estimating threshold limit values
2005; 5: 36
Parametric versus non-parametric statistics in the analysis of randomized trials with non-normally distributed data
2005; 5: 35
Stability of response characteristics of a Delphi panel: application of bootstrap data expansion
2005; 5: 37
Protocol of the COSMIN study: COnsensus-based Standards for the selection of health Measurement INstruments
2006; 6: 2
Sequential boundaries approach in clinical trials with unequal allocation ratios
2006; 6: 1
Room for improvement? A survey of the methods used in systematic reviews of adverse effects
2006; 6: 3
Searching for observational studies: what does citation tracking add to PubMed? A case study in depression and coronary heart disease
2006; 6: 4
Can electronic search engines optimize screening of search results in systematic reviews: an empirical study
2006; 6: 7
Does sampling using random digit dialling really cost more than sampling from telephone directories: Debunking the myths
2006; 6: 6
CUSUM: A tool for early feedback about performance?
2006; 6: 8
Maximising response to postal questionnaires – A systematic review of randomised trials in health research
2006; 6: 5
Evaluation of QUADAS, a tool for the quality assessment of diagnostic accuracy studies
2006; 6: 9
Beyond logistic regression: structural equations modelling for binary variables and its application to investigating unobserved confounders
2006; 6: 13
An investigation of minimisation criteria
2006; 6: 11
Methodological quality of systematic reviews of animal studies: a survey of reviews of basic research
2006; 6: 10
Scratch lottery tickets are a poor incentive to respond to mailed questionnaires
2006; 6: 19
Reviewer agreement trends from four years of electronic submissions of conference abstract
2006; 6: 14
How good is probabilistic record linkage to reconstruct reproductive histories? Results from the Aberdeen children of the 1950s study
2006; 6: 15
The fading of reported effectiveness. A meta-analysis of randomised controlled trials
2006; 6: 25
Identifying systematic reviews of the adverse effects of health care interventions
2006; 6: 22
Interval estimation and optimal design for the within-subject coefficient of variation for continuous and binary variables
2006; 6: 24
Using intervention time series analyses to assess the effects of imperfectly identifiable natural events: a general method and example
2006; 6: 16
Optimizing search strategies to identify randomized controlled trials in MEDLINE
2006; 6: 23
Planning a cluster randomized trial with unequal cluster sizes: practical issues involving continuous outcomes
2006; 6: 17
Intra-cluster correlation coefficients in adults with diabetes in primary care practices: the Vermont Diabetes Information System field survey
2006; 6: 20
How much does pre-trial testing influence complex intervention trials and would more testing make any difference? An email survey
2006; 6: 28
Reproducibility of the STARD checklist: an instrument to assess the quality of reporting of diagnostic accuracy studies
2006; 6: 12
The impact of imprecisely measured covariates on estimating gene-environment interactions
2006; 6: 21
Multivariable risk prediction can greatly enhance the statistical power of clinical trial subgroup analysis
2006; 6: 18
The demise of the randomised controlled trial: bibliometric study of the German-language health care literature, 1948 to 2004
2006; 6: 30
Motor function in Parkinson's disease and supranuclear palsy: simultaneous factor analysis of a clinical scale in several populations
2006; 6: 26
Circular instead of hierarchical: methodological principles for the evaluation of complex interventions
2006; 6: 29
Country development and manuscript selection bias: a review of published studies
2006; 6: 37
Meta-DiSc: a software for meta-analysis of test accuracy data
2006; 6: 31
An alternative to the hand searching gold standard: validating methodological search filters using relative recall
2006; 6: 33
Estimation of dynamical model parameters taking into account undetectable marker values
2006; 6: 38