Statistical methods for assessing agreement between two methods of clinical measurement.

Validating the SF-36 health survey questionnaire: new outcome measure for primary care. BMJ (1992) 26.37

limma powers differential expression analyses for RNA-sequencing and microarray studies. Nucleic Acids Res (2015) 14.81

Mefloquine resistance in Plasmodium falciparum and increased pfmdr1 gene copy number. Lancet (2004) 9.68

A better index of body adiposity. Obesity (Silver Spring) (2011) 7.53

A comparison of direct versus self-report measures for assessing physical activity in adults: a systematic review. Int J Behav Nutr Phys Act (2008) 7.32

Limits to the measurement of habitual physical activity by questionnaires. Br J Sports Med (2003) 6.93

Randomised controlled trial of nurse practitioner versus general practitioner care for patients requesting "same day" consultations in primary care. BMJ (2000) 6.44

Development of a shuttle walking test of disability in patients with chronic airways obstruction. Thorax (1992) 6.28

Statistical methods for assessing observer variability in clinical measures. BMJ (1992) 6.24

The COSMIN checklist for assessing the methodological quality of studies on measurement properties of health status measurement instruments: an international Delphi study. Qual Life Res (2010) 6.09

Conventional versus automated measurement of blood pressure in primary care patients with systolic hypertension: randomised parallel design controlled trial. BMJ (2011) 5.07

The top 100 papers. Nature (2014) 4.83

Who's afraid of informed consent? BMJ (1993) 4.81

A meta-analysis of studies using bias and precision statistics to compare cardiac output measurement techniques. J Clin Monit Comput (1999) 4.76

The patient-centredness of consultations and outcome in primary care. Br J Gen Pract (1999) 4.67

Worldwide trends in the prevalence of asthma symptoms: phase III of the International Study of Asthma and Allergies in Childhood (ISAAC). Thorax (2007) 4.67

The pfmdr1 gene is associated with a multidrug-resistant phenotype in Plasmodium falciparum from the western border of Thailand. Antimicrob Agents Chemother (1999) 4.64

Knee injury and Osteoarthritis Outcome Score (KOOS) - validation and comparison to the WOMAC in total knee replacement. Health Qual Life Outcomes (2003) 4.23

Some examples of regression towards the mean. BMJ (1994) 4.01

Accuracy of Doppler echocardiography in the hemodynamic assessment of pulmonary hypertension. Am J Respir Crit Care Med (2009) 3.96

Rosuvastatin affecting aortic valve endothelium to slow the progression of aortic stenosis. J Am Coll Cardiol (2007) 3.96

Validation of the 28-joint Disease Activity Score (DAS28) and European League Against Rheumatism response criteria based on C-reactive protein against disease progression in patients with rheumatoid arthritis, and comparison with the DAS28 based on erythrocyte sedimentation rate. Ann Rheum Dis (2008) 3.92

Method for the measurement of antioxidant activity in human fluids. J Clin Pathol (2001) 3.81

Statistics review 7: Correlation and regression. Crit Care (2003) 3.74

Reproducibility of transient elastography in the evaluation of liver fibrosis in patients with chronic liver disease. Gut (2007) 3.58

MRI-derived measurements of human subcortical, ventricular and intracranial brain volumes: Reliability effects of scan sessions, acquisition sequences, data analyses, scanner upgrade, scanner vendors and field strengths. Neuroimage (2009) 3.57

Diagnostic point-of-care tests in resource-limited settings. Lancet Infect Dis (2013) 3.56

Is the Framingham risk function valid for northern European populations? A comparison of methods for estimating absolute coronary risk in high risk men. Heart (1999) 3.53

Measurement of adults' sedentary time in population-based studies. Am J Prev Med (2011) 3.48

Detection of renal function decline in patients with diabetes and normal or elevated GFR by serial measurements of serum cystatin C concentration: results of a 4-year follow-up study. J Am Soc Nephrol (2005) 3.48

Direct comparison of different stem cell types and subpopulations reveals superior paracrine potency and myocardial repair efficacy with cardiosphere-derived cells. J Am Coll Cardiol (2012) 3.48

An analysis of the learning curve to achieve competency at colonoscopy using the JETS database. Gut (2014) 3.46

Endothelial function in human immunodeficiency virus-infected antiretroviral-naive subjects before and after starting potent antiretroviral therapy: The ACTG (AIDS Clinical Trials Group) Study 5152s. J Am Coll Cardiol (2008) 3.36

Evaluating variability in tumor measurements from same-day repeat CT scans of patients with non-small cell lung cancer. Radiology (2009) 3.30

Microscopic observation drug susceptibility assay, a rapid, reliable diagnostic test for multidrug-resistant tuberculosis suitable for use in resource-poor settings. J Clin Microbiol (2004) 3.27

Medical marijuana laws in 50 states: investigating the relationship between state legalization of medical marijuana and marijuana use, abuse and dependence. Drug Alcohol Depend (2011) 3.26

System accuracy evaluation of 43 blood glucose monitoring systems for self-monitoring of blood glucose according to DIN EN ISO 15197. J Diabetes Sci Technol (2012) 3.22

Impaired nitric oxide bioavailability and L-arginine reversible endothelial dysfunction in adults with falciparum malaria. J Exp Med (2007) 3.13

Repeatability and reproducibility in proteomic identifications by liquid chromatography-tandem mass spectrometry. J Proteome Res (2010) 3.08

A review of standards and statistics used to describe blood glucose monitor performance. J Diabetes Sci Technol (2010) 3.01

Label-free, normalized quantification of complex mass spectrometry data for proteomic analysis. Nat Biotechnol (2009) 3.01

Histidine-rich protein II: a novel approach to malaria drug sensitivity testing. Antimicrob Agents Chemother (2002) 3.01

Comparison of plethysmographic and helium dilution lung volumes: which is best for COPD? Chest (2009) 2.98

Clinimetric evaluation of shoulder disability questionnaires: a systematic review of the literature. Ann Rheum Dis (2004) 2.97

Myocardial extravascular extracellular volume fraction measurement by gadolinium cardiovascular magnetic resonance in humans: slow infusion versus bolus. J Cardiovasc Magn Reson (2011) 2.96

Randomised trial of educational visits to enhance use of systematic reviews in 25 obstetric units. BMJ (1998) 2.94

Statistics in respiratory medicine. 2. Repeatability and method comparison. Thorax (1991) 2.93

Performance of the Cockcroft-Gault, MDRD, and new CKD-EPI formulas in relation to GFR, age, and body size. Clin J Am Soc Nephrol (2010) 2.82

Comparison of Disease Activity Score (DAS)28- erythrocyte sedimentation rate and DAS28- C-reactive protein threshold values. Ann Rheum Dis (2006) 2.81

Adenosine stress 64- and 256-row detector computed tomography angiography and perfusion imaging: a pilot study evaluating the transmural extent of perfusion abnormalities to predict atherosclerosis causing myocardial ischemia. Circ Cardiovasc Imaging (2009) 2.80

Lot-to-lot variability of test strips and accuracy assessment of systems for self-monitoring of blood glucose according to ISO 15197. J Diabetes Sci Technol (2012) 2.76

Validation of hippocampal volumes measured using a manual method and two automated methods (FreeSurfer and IBASPM) in chronic major depressive disorder. Neuroradiology (2008) 2.73

Comparison of gas exchange data using the Aquatrainer system and the facemask with Cosmed K4b2 during exercise in healthy subjects. Eur J Appl Physiol (2010) 2.73

Validation of laboratory-developed molecular assays for infectious diseases. Clin Microbiol Rev (2010) 2.72

Ultrasound dilution: an accurate means of determining cardiac output in children. Pediatr Crit Care Med (2012) 2.71

Should the Schwartz formula for estimation of GFR be replaced by cystatin C formula? Pediatr Nephrol (2003) 2.70

Increased blood-oxygen binding affinity in Tibetan and Han Chinese residents at 4200 m. Exp Physiol (2014) 2.70

Continuous 24-hour monitoring of intraocular pressure patterns with a contact lens sensor: safety, tolerability, and reproducibility in patients with glaucoma. Arch Ophthalmol (2012) 2.70

External validation of a measurement tool to assess systematic reviews (AMSTAR). PLoS One (2007) 2.70

The impact of socioeconomic status on health functioning as assessed by the SF-36 questionnaire: the Whitehall II Study. Am J Public Health (1997) 2.65

Reproducibility of tumor uptake heterogeneity characterization through textural feature analysis in 18F-FDG PET. J Nucl Med (2012) 2.65

Prediction of hypoxaemia at high altitude in children with cystic fibrosis. BMJ (1994) 2.64

Prediction of general practice workload from census based social deprivation scores. J Epidemiol Community Health (1992) 2.61

Direct comparison of two new actigraphs and polysomnography in children and adolescents. Sleep (2012) 2.60

Volumetric measurements of pulmonary nodules at multi-row detector CT: in vivo reproducibility. Eur Radiol (2003) 2.59

Reproducibility of macular thickness and volume using Zeiss optical coherence tomography in patients with diabetic macular edema. Ophthalmology (2007) 2.58

Assessing performance of closed-loop insulin delivery systems by continuous glucose monitoring: drawbacks and way forward. Diabetes Technol Ther (2012) 2.53

Airways obstruction, chronic expectoration, and rapid decline of FEV1 in smokers are associated with increased levels of sputum neutrophils. Thorax (1996) 2.52

Arterialised earlobe blood gas analysis: an underused technique. Thorax (1994) 2.48

Randomised controlled trial for evaluation of fitness programme for patients with chronic low back pain. BMJ (1995) 2.47

Estimating energy expenditure using accelerometers. Eur J Appl Physiol (2006) 2.47

An international Ki67 reproducibility study. J Natl Cancer Inst (2013) 2.46

Comprehensive assessment and standardization of solid phase multiplex-bead arrays for the detection of antibodies to HLA. Am J Transplant (2013) 2.45

Axillary and rectal temperature measurements in infants. Arch Dis Child (1992) 2.44

Episiotomy characteristics and risks for obstetric anal sphincter injuries: a case-control study. BJOG (2012) 2.41

Evaluation of point-of-care glucose testing accuracy using locally-smoothed median absolute difference curves. Clin Chim Acta (2007) 2.37

CLSI-derived hematology and biochemistry reference intervals for healthy adults in eastern and southern Africa. PLoS One (2009) 2.37

The development of a "reduced logMAR" visual acuity chart for use in routine clinical practice. Br J Ophthalmol (2001) 2.35

Understanding Bland Altman analysis. Biochem Med (Zagreb) (2015) 2.35

Reproducibility and validity of lung density measures from cardiac CT Scans--The Multi-Ethnic Study of Atherosclerosis (MESA) Lung Study. Acad Radiol (2009) 2.35

Non-contrast T1-mapping detects acute myocardial edema with high diagnostic accuracy: a comparison to T2-weighted cardiovascular magnetic resonance. J Cardiovasc Magn Reson (2012) 2.34

Expiratory time constant for determinations of plateau pressure, respiratory system compliance, and total resistance. Crit Care (2013) 2.34

Evaluation of the Ciba Corning Biotrack 512 coagulation monitor for the control of oral anticoagulation. J Clin Pathol (1991) 2.34

Aneurysm growth occurs at region of low wall shear stress: patient-specific correlation of hemodynamics and growth in a longitudinal study. Stroke (2008) 2.32

Tumor volume in subcutaneous mouse xenografts measured by microCT is more accurate and reproducible than determined by 18F-FDG-microPET or external caliper. BMC Med Imaging (2008) 2.30

Temperature measured at the axilla compared with rectum in children and young people: systematic review. BMJ (2000) 2.26

Low cost carbon monoxide monitors in smoking assessment. Thorax (1986) 2.23

Evaluation of absolute quantitation by nonlinear regression in probe-based real-time PCR. BMC Bioinformatics (2006) 2.23

Quantitative assessment of myocardial perfusion abnormality on SPECT myocardial perfusion imaging is more reproducible than expert visual analysis. J Nucl Cardiol (2009) 2.22

Optofluidic fluorescent imaging cytometry on a cell phone. Anal Chem (2011) 2.21

Measurement of optic disc size: equivalence of methods to correct for ocular magnification. Br J Ophthalmol (1998) 2.20

RNA-seq: technical variability and sampling. BMC Genomics (2011) 2.19

Reproducibility of the oral glucose tolerance test in overweight children. J Clin Endocrinol Metab (2008) 2.19

A new oscillometric method for pulse wave analysis: comparison with a common tonometric method. J Hum Hypertens (2010) 2.19

Optical coherence tomography accurately measures corneal power change from laser refractive surgery. Ophthalmology (2014) 2.17

Clinical comparison of an enhanced-sensitivity branched-DNA assay and reverse transcription-PCR for quantitation of human immunodeficiency virus type 1 RNA in plasma. J Clin Microbiol (1998) 2.15

Predictability of Vibrio cholerae in Chesapeake Bay. Appl Environ Microbiol (2003) 2.15

Impairment of diastolic function by shortened filling period in severe left ventricular disease. Br Heart J (1989) 2.14

Test variability of the QuantiFERON-TB gold in-tube assay in clinical practice. Am J Respir Crit Care Med (2012) 2.14

Human chorioretinal layer thicknesses measured in macula-wide, high-resolution histologic sections. Invest Ophthalmol Vis Sci (2011) 2.13

Empirical evidence of bias. Dimensions of methodological quality associated with estimates of treatment effects in controlled trials. JAMA (1995) 45.41

The CONSORT statement: revised recommendations for improving the quality of reports of parallel-group randomised trials. Lancet (2001) 31.74

Measuring agreement in method comparison studies. Stat Methods Med Res (1999) 31.11

Multiple significance tests: the Bonferroni method. BMJ (1995) 23.46

Systematic reviews in health care: Assessing the quality of controlled clinical trials. BMJ (2001) 20.65

Confidence intervals rather than P values: estimation rather than hypothesis testing. Br Med J (Clin Res Ed) (1986) 18.51

Analysis of serial measurements in medical research. BMJ (1990) 16.69

Cronbach's alpha. BMJ (1997) 13.79

Diagnostic tests 2: Predictive values. BMJ (1994) 12.97

The scandal of poor medical research. BMJ (1994) 11.58

The CONSORT statement: revised recommendations for improving the quality of reports of parallel-group randomized trials. Ann Intern Med (2001) 11.48

Diagnostic tests. 1: Sensitivity and specificity. BMJ (1994) 11.35

Statistical guidelines for contributors to medical journals. Br Med J (Clin Res Ed) (1983) 10.90

Statistics notes. Logarithms. BMJ (1996) 10.56

Absence of evidence is not evidence of absence. BMJ (1995) 10.36

Statistics in medical journals. Stat Med (1983) 9.80

Evaluating non-randomised intervention studies. Health Technol Assess (2003) 9.69

Comparing methods of measurement: why plotting difference against standard method is misleading. Lancet (1995) 9.14

Statistics notes: Analysing controlled trials with baseline and follow up measurements. BMJ (2001) 8.98

Statistics and ethics in medical research: III How large a sample? Br Med J (1980) 8.78

Better reporting of randomised controlled trials: the CONSORT statement. BMJ (1996) 8.39

More informative abstracts revisited. Ann Intern Med (1990) 8.26

Statistics notes: the normal distribution. BMJ (1995) 6.82

Transforming data. BMJ (1996) 6.78

Regression towards the mean. BMJ (1994) 6.57

Measurement error. BMJ (1996) 6.18

Comparison of clinical information gained from routine blood-gas analysis and from gastric tonometry for intramural pH. Lancet (1993) 5.90

Statistics notes. Treatment allocation in controlled trials: why randomise? BMJ (1999) 5.86

Assessing the quality of randomization from reports of controlled trials published in obstetrics and gynecology journals. JAMA (1994) 5.80

Risk of bacterial infection associated with allogeneic blood transfusion among patients undergoing hip fracture repair. Transfusion (1999) 5.67

Statistics notes. The odds ratio. BMJ (2000) 5.61

The CONSORT statement: revised recommendations for improving the quality of reports of parallel group randomized trials. BMC Med Res Methodol (2001) 5.43

Applying the right statistics: analyses of measurement studies. Ultrasound Obstet Gynecol (2003) 5.40

How can medical journals help prevent poor medical research? Some opportunities presented by electronic publishing. Lancet (1999) 5.27

How to randomise. BMJ (1999) 5.24

Statistics notes. Interaction 2: Compare effect sizes not P values. BMJ (1996) 5.18

Air pollution and daily mortality in London: 1987-92. BMJ (1996) 4.97

Comparing several groups using analysis of variance. BMJ (1996) 4.89

Correlation, regression, and repeated data. BMJ (1994) 4.88

Calculating correlation coefficients with repeated observations: Part 1--Correlation within subjects. BMJ (1995) 4.87

REporting recommendations for tumour MARKer prognostic studies (REMARK). Br J Cancer (2005) 4.85

Social factors and height of primary schoolchildren in England and Scotland. J Epidemiol Community Health (1978) 4.73

Randomisation. BMJ (1991) 4.66

Patients' preferences and randomised trials. Lancet (1996) 4.64

Measurement error and correlation coefficients. BMJ (1996) 4.38

Indirect comparisons of competing interventions. Health Technol Assess (2005) 4.33

Time to event (survival) data. BMJ (1998) 4.29

Statistical aspects of prognostic factor studies in oncology. Br J Cancer (1994) 4.22

Measurement error. BMJ (1996) 4.13

The natural history of asthma in childhood. J Epidemiol Community Health (1986) 4.09

Survival analysis part I: basic concepts and first analyses. Br J Cancer (2003) 4.08

The intracluster correlation coefficient in cluster randomisation. BMJ (1998) 4.07

Some examples of regression towards the mean. BMJ (1994) 4.01

Survival probabilities (the Kaplan-Meier method). BMJ (1998) 3.98

Impact of allocation concealment on conclusions drawn from meta-analyses of randomized trials. Int J Epidemiol (2007) 3.84

Effects on birth weight of smoking, alcohol, caffeine, socioeconomic factors, and psychosocial stress. BMJ (1989) 3.83

A catalogue of reporting guidelines for health research. Eur J Clin Invest (2010) 3.83

The development of respiratory symptoms in a cohort of Kent schoolchildren. Bull Physiopathol Respir (Nancy) (1975) 3.78

Diagnostic tests 3: receiver operating characteristic plots. BMJ (1994) 3.73

Effectiveness of acute postoperative pain management: I. Evidence from published data. Br J Anaesth (2002) 3.60

Effects of a drug overdose in a television drama on presentations to hospital for self poisoning: time series and questionnaire study. BMJ (1999) 3.52

Surgery on the rheumatoid cervical spine for the non-ambulant myelopathic patient-too much, too late? Lancet (1996) 3.52

Frequency and reasons for outcome reporting bias in clinical trials: interviews with trialists. BMJ (2011) 3.50

The benefits and harms of breast cancer screening: an independent review. Br J Cancer (2013) 3.43

Transformations, means, and confidence intervals. BMJ (1996) 3.42

Estimating sample sizes for binary, ordered categorical, and continuous outcomes in two group comparisons. BMJ (1995) 3.35

Measurement error proportional to the mean. BMJ (1996) 3.34

National study of health and growth: standards of attained height, weight and triceps skinfold in English children 5 to 11 years old. Ann Hum Biol (1977) 3.23

The use of transformation when comparing two means. BMJ (1996) 3.22

A note on the use of the intraclass correlation coefficient in the evaluation of agreement between two methods of measurement. Comput Biol Med (1990) 3.18

Interaction 3: How to examine heterogeneity. BMJ (1996) 3.17

Effect of using reporting guidelines during peer review on quality of final manuscripts submitted to a biomedical journal: masked randomised trial. BMJ (2011) 3.17

Missing covariate data within cancer prognostic studies: a review of current reporting and proposed guidelines. Br J Cancer (2004) 3.15

Incidence of pregnancy after laparoscopy and hydrotubation. Br Med J (Clin Res Ed) (1982) 3.11

Analysis of a trial randomised in clusters. BMJ (1998) 3.10

Survival analysis part II: multivariate data analysis--an introduction to concepts and methods. Br J Cancer (2003) 3.06

Blinding and exclusions after allocation in randomised controlled trials: survey of published parallel group trials in obstetrics and gynaecology. BMJ (1996) 2.99

Calculating correlation coefficients with repeated observations: Part 2--Correlation between subjects. BMJ (1995) 2.94

Randomised trial of educational visits to enhance use of systematic reviews in 25 obstetric units. BMJ (1998) 2.94

Detecting skewness from summary information. BMJ (1996) 2.88

Outcome selection bias in meta-analysis. Stat Methods Med Res (2005) 2.86

Statistics and ethics in medical research. VI--Presentation of results. Br Med J (1980) 2.85

Sample size in cluster randomisation. BMJ (1998) 2.82

The effects of combining education and enforcement to reduce tobacco sales to minors. A study of four northern California communities. JAMA (1991) 2.77

A prognostic model for ovarian cancer. Br J Cancer (2001) 2.77

The CONSORT statement: revised recommendations for improving the quality of reports of parallel-group randomized trials. J Am Podiatr Med Assoc (2001) 2.71

Survival analysis Part III: multivariate data analysis -- choosing a model and assessing its adequacy and fit. Br J Cancer (2003) 2.71

Baseline comparisons in randomized clinical trials. Stat Med (1991) 2.69

Quartiles, quintiles, centiles, and other quantiles. BMJ (1994) 2.68

Predictors of physician's smoking cessation advice. JAMA (1991) 2.66

More informative abstracts. Ann Intern Med (1987) 2.63

Effect of arterial revascularisation on survival: a systematic review of studies comparing bilateral and single internal mammary arteries. Lancet (2001) 2.61

Factors associated with the starting of cigarette smoking by primary school children. Br J Prev Soc Med (1974) 2.61

One and two sided tests of significance. BMJ (1994) 2.61

Preterm delivery: effects of socioeconomic factors, psychological stress, smoking, alcohol, and caffeine. BMJ (1995) 2.54

Long-term study of smoking by secondary schoolchildren. Arch Dis Child (1978) 2.54

Monitoring of large randomised clinical trials: a new approach with Bayesian methods. Lancet (2001) 2.35

c-erbB-2 protein overexpression in breast cancer is a risk factor in patients with involved and uninvolved lymph nodes. Br J Cancer (1991) 2.29

Randomised controlled trial of effects of coordinating care for terminally ill cancer patients. BMJ (1992) 2.26

The efficacy of problem-solving treatments after deliberate self-harm: meta-analysis of randomized controlled trials with respect to depression, hopelessness and improvement in problems. Psychol Med (2001) 2.22