Table 4.

Significance of the difference in the demographic characteristics of self-employed and employed doctors and university professors.

Demographic characteristics	Self-employed doctors (n=14)	Employed doctors (n=54)	University professors (n=22)	P value
Age (years), 30s:40s, n	7:7	13:41	14:8	.15
Gender, male:female, n	12:2	36:18	14:8	.32
Level of prior knowledgea, mean (SD)	3.1 (1.5)	3.0 (1.5)	2.8 (1.4)	.74

^aLevel of prior knowledge about blockchain technology was rated on a scale that ranged from 1 (Do not know it at all) to 7 (Know it very well). Higher scores are indicative of a higher level of prior knowledge about blockchain technology.