Table 1. Demographics (%).

	Du/Be	US		UK	AUS
Gender
male	58	63		45	36
female	41	37		55	64
Age
< 30	14	1	< 25	1	na
30–39	28	6	25–34	13	na
40–49	28	20	35–44	27	na
50–59	25	45	45–54	31	na
> 60	6	29	> 55	28	na
Education level
Bachelor's	17	23	Bachelor’s or Master’s	na	86
Master's	82	67
Other	1	10	Other	na	14
Experience
0–2	10	1		8	3
3–5	19	3		14	9
6–10	18	9		19	24
> 10	54	88		60	64