Table 6. Motivators for data managers vs. all other data professionals.

Motivator	n	low	interm.	high	p-value
Acceleration of scientific research and appl.	235	2.15	22.32	75.54	0.5318
Dissemination and recogn. of your work	231	3.48	24.35	72.17	0.1487
Personal commitment to open data	232	5.65	24.35	70.00	0.0003***
Requests from data users	231	7.66	33.19	59.15	0.7284
Funder policy	230	15.22	32.17	52.61	0.9979
Organizational institutional policy	231	15.09	37.93	46.98	0.8039
Scientific professional society policy	230	13.85	39.83	46.32	0.8076
Community norms	233	12.55	45.45	41.99	0.3322
Publisher policy	230	20.78	47.19	32.03	0.4843

At a personal level, data managers who contributed to the survey were significantly more committed to open data than all other data professionals (p-values based on a two-sample Mann-Whitney-Wilcoxon test, Levels of significance:

*: p<0.05,

**: p<0.01,

***: p<0.001.).