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The Nature Methods Points of View column column offers practical advice in design and data presentation for the busy scientist.
With the publication of Uncertainty and the Management of Epidemics, we celebrate our 50th column! Since 2013, our Nature Methods Points of Significance has been offering crisp explanations and practical suggestions about best practices in statistical analysis and reporting. To all our readers and coauthors: thank you and see you in the next column!

Nature Methods: Points of Significance

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Points of Significance column in Nature Methods. (Launch of Points of Significance)

Generated on 19-May-2026 (24 days ago).

Metrics are provided by Altmetric.

Access values larger than 10,000 are rounded off to nearest 1,000 by Altmetric.

article accesses daily %nm %all citations altmetric
Error bars 235,000 51 98 99 279 251
Significance, P values and t-tests 234,000 51 89 98 168 83
Principal component analysis 217,000 67 85 96 1,362 69
Visualizing samples with box plots 216,000 48 88 98 528 82
Association, correlation and causation 211,000 54 98 99 356 191
Replication 143,000 33 64 95 208 31
Statistics versus machine learning 140,000 47 97 99 1,400 345
P values and the search for significance 137,000 40 90 98 108 130
Importance of being uncertain 126,000 27 78 96 91 50
Power and sample size 116,000 25 80 97 206 63
The SEIRS model for infectious disease dynamics 85,000 39 98 99 221 360
Nonparametric tests 68,000 15 58 89 96 14
Comparing samples—part I 67,000 15 68 93 69 22
Analysis of variance and blocking 66,000 15 60 91 72 18
Nested designs 64,000 15 87 97 69 66
Two-factor designs 63,000 15 34 51 36 3
Bayes' theorem 61,000 15 69 94 106 33
Sources of variation 59,000 14 48 88 32 12
Simple linear regression 58,000 15 76 94 163 32
Comparing samples—part II 58,000 13 48 86 80 11
Split plot design 56,000 14 40 77 70 7
Classification and regression trees 52,000 16 45 80 380 9
Multiple linear regression 52,000 14 80 96 160 43
Designing comparative experiments 52,000 12 52 81 21 8
Sampling distributions and the bootstrap 51,000 13 60 92 160 21
Bayesian statistics 51,000 13 53 89 37 15
Interpreting P values 50,000 15 70 95 79 48
Bayesian networks 45,000 11 39 73 72 6
Model selection and overfitting 44,000 12 72 94 643 40
Classification evaluation 44,000 12 69 95 399 42
Clustering 38,000 12 52 90 151 21
Optimal experimental design 31,000 11 51 90 116 21
Analyzing outliers: influential or nuisance? 29,000 8 28 65 113 4
The curse(s) of dimensionality 26,000 9 58 90 469 20
Machine learning: supervised methods 25,000 8 60 93 328 29
Logistic regression 24,000 7 66 92 124 25
Regression diagnostics 24,000 7 46 72 82 6
Modeling infectious epidemics 23,000 10 86 97 100 113
Ensemble methods: bagging and random forests 21,000 7 40 85 299 13
Machine learning: a primer 20,000 6 86 97 251 73
Tabular data 14,000 4 23 49 7 3
Regularization 14,000 4 57 88 44 17
Two-level factorial experiments 13,000 5 12 24 20 1
Markov models—Markov chains 10,000 4 38 90 33 20
Predicting with confidence and tolerance 8,945 3 23 46 8 3
The standardization fallacy 7,775 4 44 90 52 19
Markov models — hidden Markov models 7,191 3 28 77 35 8
Convolutional neural networks 6,876 7 20 74 99 6
The class imbalance problem 5,441 3 28 81 125 9
Quantile regression 5,278 2 35 84 110 12
Survival analysis—time-to-event data and censoring 5,110 4 20 70 29 5
Markov models — training and evaluation of hidden Markov models 4,797 2 41 81 10 10
Uncertainty and the management of epidemics 4,186 2 24 77 17 9
Analyzing outliers: robust methods to the rescue 4,174 2 25 50 36 3
Neural networks primer 3,958 3 21 69 10 4
Propensity score matching 3,581 6 5 31 30 1
Graphical assessment of tests and classifiers 2,574 1 26 80 10 9
Propensity score weighting 2,570 6 18 71 7 5
Regression modeling of time-to-event data with censoring 2,471 2 16 72 6 5
Comparing classifier performance with baselines 2,319 3 26 77 8 8
Errors in predictor variables 1,852 2 1 14 5 1
Testing for rare conditions 1,810 1 15 60 4 4
Symmetric alternatives to the ordinary least squares regression 1,267 4 37 78 1 7
Double robustness 1,113 70 1 1 0 1
3,316,288 978 51 80 10,410


%NM percentile rank (avg 51) for the article of tracked articles of a similar age in Nature Methods.

%ALL percentile rank (avg 80) for the article of tracked articles of a similar age in all journals.

Total accesses 3,316,288.

Total citations 10,410.

news + thoughts

Propensity score weighting

Mon 04-05-2026

It is not certain that everything is uncertain. —Blaise Pascal

We have already explored how we can mitigate bias caused by confounding variables in observational studies using propensity score (PS) matching (PSM) and propensity score weighting (PSW). However, any statistical model is only as good as its assumptions and, if it is specified incorrectly, it can itself produce biased estimates of the treatment effect.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
Nature Methods Points of Significance column: Double Robustness. (read)

This month, we explore double robustness, a powerful statistical concept that provides a valuable “safety net” against the risk of an incorrect model. It offers two opportunities, instead of just one, to obtain a valid estimate of the treatment effect — making it possible to draw credible causal inferences from observational data without having to depend on a single set of modeling assumptions.

Kurz, C.F., Krzywinski, M. & Altman, N. (2026) Points of significance: Double Robustness. Nat. Methods 23:868–869.

Nature Biotechnology cover

Thu 23-04-2026

My cover design on the 7 April 2026 Nature Biotechnology issue shows the dendrogram that represents a cluster of uniquely expressed (or downregulated) genes in human naive stem cells induced from such cells. Within each dendrogram block, the genomic barcode sequence (sampled from Supplementary Table 1) is depicted with a Code 39 barcode. The highlighted barcode is one of those used for cell isolation.

Ishiguro S. et al. A multi-kingdom genetic barcoding system for precise clone isolation (2026) Nature Biotechnology 44:616–629.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
My Nature Biotechnology phylogenetic tree cover (volume 44, issue 4, 7 April 2026). (more)

Browse my gallery of cover designs.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
A catalogue of my journal and magazine cover designs. (more)

Happy 2026 π Day—
Art for the 5%

Fri 13-03-2026

Celebrate π Day (March 14th) and enjoy the art — but only if you're part of the 5%.

Go ahead, see what you can't see.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
2026 π DAY | Art for the 5%. Shown in the style of Ishihara color test plates, the art is visible only to those with colour blindness. (details)

Ishihara's Tests for Colour Deficiency

Sun 08-03-2026

Authentic and accurate images of Ishihara's test plates photographed (and lovingly color-corrected) from the 38-plate Ishihara's Tests for Colour Deficiency.

I also provide the position, size, and color of each circle on each test plate.

Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
ISHIHARA'S TEST PLATE 6 | This plate is part of the set of transformation plates. If you see 5, you're ok. If you see 2, you're not. (details)
Martin Krzywinski @MKrzywinski mkweb.bcgsc.ca
ISHIHARA'S TEST PLATE 18 | This plate is part of the set of mysterious hidden plates. If you don't see anything, you're ok. If you see 5, you're not. (details)
Martin Krzywinski | contact | Canada's Michael Smith Genome Sciences CentrePHSA
Google whack “vicissitudinal corporealization”
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