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editorial
. 2019 Oct;73(5):298–302. doi: 10.5455/medarh.2019.73.298-302

Table 1. Results of the survey of the experimental studies (n = 43).

Requirement Satisfied n (%) Not satisfied n (%) Unclear n (%) Not applicable n (%)
Sample size reported for the experiment? 26 (60%) 17 (40%) - -
Number of observations reported for the experiment 33 (77%) 10 (23%) - -
Value of test statistics, exact p value and degrees of freedom reported 6 (14%) 37 (86%) - -
Error bars correspond to the analysis (i.e. standard error is based on number of independent observations) 19 (44%) 6 (14%) 12 (28%) 6 (14%)
Only independent observations were taken into account for statistical tests 19 (44%) 4 (9%) 20 (47%) -
Is there negative control? 32 (74%) 11 (26%) - -
Was positive control necessary, and if so, was it used? 20 (47%) 19 (44%) - 4 (9%)
Were treatments randomly allocated to experimental units? 4 (9%) 28 (65%) 2 (5%) 9 (21%)
Number of citations: mean, standard deviation, median, interquartile range 28.6 ± 37.2; 12.0; 29.0
Time passed from the publication (years) 12.4 ± 10.9; 9.0; 13