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. 2011 Aug 17;6(8):e22478. doi: 10.1371/journal.pone.0022478

Table 2. Demographic information on survey participants: principal investigators (n = 298), other researchers (n = 116) and combined (n = 414).

Demographic category Number of principal investigators, n = 298 Number of other researchers, n = 116 Combined, n = 414
Gender
Female 92 (30.9%) 76 (65.5%) 168 (40.6%)
Male 201 (67.5%) 39 (33.6%) 240 (58.0%)
Not specified 5 (1.7%) 1 (1.0%) 6 (1.4%)
Age
19–29 3 (1.0%) 40 (34.5%) 43 (10.4%)
30–39 46 (15.4%) 38 (32.8%) 84 (20.3%)
40–49 104 (34.9%) 18 (15.5%) 122 (29.5%)
50–59 96 (32.2%) 18 (15.5%) 114 (27.5%)
60-above 47 (15.8%) 1 (0.9%) 48 (11.6%)
Not specified 2 (0.7%) 1 (0.9%) 3 (0.7%)
Education
College/university 15 (5.0%) 35 (30.2%) 50 (12%)
Masters 11 (3.7%) 35 (30.2%) 46 (11%)
Doctorate 268 (89.9%) 46 (39.7%) 314 (76%)
Other 4 (1.3%) 0 4 (1.0%)
Years of experience in animal-based research
<10 years 15 (5.0%) 38 (32.8%) 53 (12.8%)
10–20 years 142 (47.7%) 61 (52.6%) 202 (48.8%)
>20 years 141 (47.3%) 17 (14.7%) 158 (38.2%)
AEC Membership
Never a member 164 (55.0%) 97 (83.6%) 261 (63.0%)
Past or current member 134 (45.0%) 19 (16.4%) 153 (37.0%)
Research area *
Agricultural 9 (3.0%) 2 (1.7%) 11 (2.7%)
Animal welfare and health 23 (7.7%) 1 (0.9%) 24 (5.8%)
Behaviour 25 (8.4%) 4 (3.4%) 29 (7.0%)
Biology 40 (13.4%) 18 (15.5%) 58 (14.0%)
Ecology 24 (8.1%) 5 (4.3%) 29 (7.0%)
Genetics 13 (4.4%) 2 (1.7%) 15 (3.6%)
Human diseases 64 (21.4%) 40 (34.5%) 104 (25.1%)
Immunology 12 (4.0%) 10 (8.6%) 22 (5.3%)
Neuroscience 60 (20.1%) 24 (20.7%) 84 (20.3%)
Pharmacology, drug & vaccine 16 (5.4%) 9 (7.8%) 25 (6.0%)
Physiology 29 (9.7%) 11 (9.5%) 40 (9.7%)
Toxicology 9 (3.0%) 2 (1.7%) 11 (2.7%)
Wildlife 23 (7.7%) 6 (5.2%) 29 (7.0%)
Other 28 (9.4%) 19 (16.4%) 47 (11.4%)

*participant could respond with more than one research area.