Table 1.
Basic statistical methods used in medical research by research goal and type of outcome variable.
Table 2.
Advanced statistical methods.
Table 3.
Basic statistics of the intensity score by study design, sample size and main outcome.
Fig 1.
Intensity of statistical methods and reporting by the publication journal.
The dotted horizontal line shows the median value of all evaluated 840 original research articles.
Fig 2.
The distribution of the intensity score by publication year in the Lancet and NEJM.
Table 4.
Inter-observer reliability of the statistical intensity score (SIMA score).
All raters ICC = 0.878 (agreement definition, single measures, mixed model.
Table 5.
Summary statistics of inter-rater (and intra-rater) reliability between the raters, based on percent agreement, kappa and AC1from a total of 63 items.