Table 1. Responses^a by age, sex, country, job title and years of experience for Rounds 1 and 2.

Features	Round 1 (n=252)		Round 2 (n=196)
Age range category	Frequency	%	Frequency	%
18-24	1	0.4	0	0.0
25-34	5	2.0	9	4.1
35-44	49	19.4	28	13.9
45-54	83	32.9	57	29.4
55-64	84	33.3	74	38.1
65-74	30	11.9	28	14.4
Total	252	100	196	100
Sex
Male	158	62.6	115	58.7
Female	92	36.5	80	40.8
Missing/prefer not to answer	2	0.8	1	0.5
Total	252	100	196	100
Countries
England	190	75.7	142	69.3
Northern Ireland	9	3.6	7	3.4
Scotland	40	15.9	48	23.4
Wales	12	4.8	8	3.9
Total	251	100	205***	100
Job Title
OP*	185	73.4	135	68.6
OHR**	39	15.5	41	21.1
OP* & OHR	28	11.1	20	10.3
Total	252	100.0	196	100.0
Years of experience	Mean ± SD (min-max) n= 213 20.4± 11.2 (1-60)		Mean ± SD (min-max) n=155 21.8 ± 10.5 (1-50)

^aResponse rate cannot be calculated as denominator data was not available due to survey dissemination and participant recruitment method used (See Methods section)

^*OP: occupational physician

^**OHR: occupational health researcher

^***Note that total answers for country amount to 205 due to individuals working across more than one country