Supplement 5. Comparison of 5 items on the benefits of data-sharing policies
			   Kruskal-Wallis Test

    Number
        72  M13_1
        72  M13_2
        72  M13_3
        72  M13_4
        72  M13_5
       ----
       360    Total


[Large Samples]

Statistic: x²= 14.18                     After Correction x²= 14.88
Significance (0.05): x²= 9.49                      P Value: P = 0.0050

Decision: The difference between group distribution (medians) is significant.


Dunn's Multiple Comparison

Groups   : 1          2          3          4          5         
1         
2          0.0060*   
3          0.3330     1.0000    
4          0.2190     1.0000     1.0000    
5          1.0000     0.1010     1.0000     1.0000    

* Mark: Probability P < 0.05




Item content on the advantages of data sharing

 * 13. Despite the above concerns, data-sharing policies proliferate in various academic disciplines due to their benefits for running a journal. Please respond to the extent to which you agree with this statement.
1 Very much not (not as good as it looks).	
7 Very much so (as good as it seems).
1) Facilitating peer review.
2) Ensuring research objectivity.
3) Improve the quality of papers.
4) Promoting the reuse of data.
5) Increasing citations of the journal.