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. 2015 Apr 22;10(4):e0122321. doi: 10.1371/journal.pone.0122321

Table 2. Demographic characteristics showing validation cohort participant gender, age, race, ethnicity and subspecialty (n = 996).

Category N %
Gender
Female 501 50.3
Male 495 49.7
Age
20–29 years 444 44.6
30–39 years 552 55.4
Race/Ethnicity
Caucasian 485 48.7
Latino-American 58 5.8
African-American 34 3.4
Asian 335 33.6
Mixed race and ethnicity 84 8.4
Medical Subspecialty
Anesthesiology 95 9.5
Emergency Medicine 29 2.9
Internal Medicine 289 29.0
Neurology 32 3.2
Obstetrics & Gynecology 25 2.5
Physical Medicine and Rehabilitation 22 2.2
Pathology 50 5.0
Pediatrics 140 14.1
Psychiatry 52 5.2
Surgery 188 18.9
Radiation & Nuclear Medicine 74 7.4