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. Author manuscript; available in PMC: 2016 Sep 15.
Published in final edited form as: JAMA. 2015 Sep 15;314(11):1149–1158. doi: 10.1001/jama.2015.10680

Table 3.

Multivariable Analysis of Factors Associated With Medical School Faculty Rank in 2014

Full Professora
Associate or Full Professorb
Full Professorc
No./Total (%)
of Professors
Absolute Difference In Proportion
No./Total (%)
of Professors
Absolute Difference In Proportion
No./Total (%)
of Professors
Absolute Difference In Proportion
Unadjusted,% Adjusted (95% CI)d Unadjusted,% Adjusted (95% CI)d Unadjusted,% Adjusted (95% CI)d
Sample, No. 91 073 (All faculty) 91 073 (All faculty) 41 054 (Associate or full faculty)

Sex

 Men 17 354/60 609 (28.6) 1 [Reference] 31 353/60 609 (51.7) 1 [Reference] 17354/31 353 (55.4) 1 [Reference]

 Women 3623/30 464 (11.9) −16.7 −3.8 (−4.4 to −3.3) 9701/30 464 (31.8) −19.9 −2.8 (−3.4 to −2.2) 3623/9701 (37.3) −18.1 −6.2 (−7.2 to −5.1)

Age, y

 <40 142/17 535 (0.8) 1 [Reference] 611/17 535 (3.5) 1 [Reference] 142/611 (23.2) 1 [Reference]

 40–44 207/14 218 (1.5) 0.7 −1.4 (−2.6 to −0.2) 2850/14 218 (20.0) 16.5 18.1 (16.8 to 19.4) 207/2850 (7.3) −15.9 −35.5 (−40.4 to −30.5)

 45–49 1180/12 369 (9.5) 8.7 9.1 (7.8 to 10.4) 5428/12 369 (43.9) 40.4 31.4 (29.9 to 32.9) 1180/5428 (21.7) −1.5 −18.8 (−23.4 to −14.1)

 50–54 3042/11 912 (25.5) 24.7 18.1 (16.7 to 19.6) 7231/11 912 (60.7) 57.2 35.6 (33.9 to 37.2) 3042/7231 (42.1) 18.9 −4.9 (−9.6 to −0.2)

 55–59 4383/11 401 (38.4) 37.6 19.9 (18.4 to 21.5) 7795/11 401 (68.4) 64.9 33.3 (31.5 to 35.1) 4383/7795 (56.2) 33 −1.6 (−6.4 to 3.2)

 60–64 4496/9140 (49.2) 48.4 19.7 (18 21.3) 6753/9140 (73.9) 70.4 29.2 (27.2 to 31.1) 4496/6753 (66.6) 43.4 −0.3 (−5.3 to 4.7)

 >65 7527/14 498 (51.9) 51.1 15.2 (13.6 to 16.9) 10 386/14 498 (71.6) 68.1 22.6 (20.7 to 24.5) 7527/10 386 (72.5) 49.3 −5.4 (−10.6 to −0.2)

Years since residency (per 1 y) 1.1 (1 to 1.1) 1.4 (1.4 to 1.5) 1.6 (1.5 to 1.7)

Specialty

 Anesthesiology 874/5657 (15.4) 1 [Reference] 2067/5657 (36.5) 1 [Reference] 874/2067 (42.3) 1 [Reference]

 Cardiology 1159/3996 (29.0) 13.6 −0.2 (−1.5 to 1.1) 2062/3996 (51.6) 15.1 −1.9 (−3.4 to −0.3) 1159/2062 (56.2) 13.9 −1.1 (−3.8 to 1.5)

 Emergency medicine 386/3508 (11.0) −4.4 −0.1 (−1.7 to 1.6) 1042/3508 (29.7) −6.8 0.6 (−1.1 to 2.2) 386/1042 (37.0) −5.3 1.5 (−1.8 to 4.9)

 Family medicine 535/3795 (14.1) −1.3 −1.2 (−2.7 to 0.2) 1294/3795 (34.1) −2.4 −2.5 (−4 to −0.9) 535/1294 (41.3) −1.0 0.0 (−3 to 3.1)

 Gastroenterology 563/1987 (28.3) 12.9 1.0 (−0.7 to 2.7) 1000/1987 (50.3) 13.8 0.4 (−1.6 to 2.4) 563/1000 (56.3) 14 0.8 (−2.6 to 4.1)

 Hematology/oncology 1007/3148 (32.0) 16.6 0.5 (−0.9 to 2) 1730/3148 (55.0) 18.5 −2.0 (−3.8 to −0.3) 1007/1730 (58.2) 15.9 −0.3 (−3.2 to 2.5)

 Infectious disease 619/1976 (31.3) 15.9 3.0 (1.3 to 4.7) 1125/1976 (56.9) 20.4 4.4 (2.4 to 6.3) 619/1125 (55.0) 12.7 0.9 (−2.2 to 4.1)

 Internal medicine 1434/8902 (16.1) 0.7 −0.5 (−1.7 to 0.7) 3239/8902 (36.4) −0.1 −0.2 (−1.5 to 1.1) 1434/3239 (44.3) 2 −0.4 (−2.8 to 2)

 Neurology 1107/3880 (28.5) 13.1 3.3 (1.9 to 4.7) 1956/3880 (50.4) 13.9 2.7 (1.1 to 4.3) 1107/1956 (56.6) 14.3 2.6 (−0.1 to 5.3)

 OB/GYN 767/3822 (20.1) 4.7 1.4 (0 to 2.8) 1634/3822 (42.8) 6.3 1.8 (0.3 to 3.3) 767/1634 (46.9) 4.6 0.9 (−1.9 to 3.7)

 Orthopedic surgery 597/2477 (24.1) 8.7 0.8 (−0.8 to 2.4) 1221/2477 (49.3) 12.8 1.6 (−0.2 to 3.4) 597/1221 (48.9) 6.6 −0.2 (−3.2 to 2.9)

 Other 3283/11 674 (28.1) 12.7 2.2 (1.1 to 3.3) 5913/11 674 (50.7) 14.2 2.3 (1 to 3.5) 3283/5913 (55.5) 13.2 1.8 (−0.3 to 4)

 Pathology 1088/3479 (31.3) 15.9 6.7 (5.2 to 8.2) 1974/3479 (56.7) 20.2 7.9 (6.3 to 9.4) 1088/1974 (55.1) 12.8 7.4 (4.7 to 10)

 Pediatrics 2395/12 396 (19.3) 3.9 1.4 (0.3 to 2.5) 5086/12 396 (41.0) 4.5 1.7 (0.5 to 2.9) 2395/5086 (47.1) 4.8 −0.2 (−2.4 to 2)

 Psychiatry 1018/4789 (21.3) 5.9 −1.6 (−2.9 to −0.4) 1983/4789 (41.4) 4.9 −2.2 (−3.7 to −0.8) 1018/1983 (51.3) 9 −2.6 (−5.2 to 0.1)

 Radiology 1148/5003 (22.9) 7.5 2.5 (1.1 to 3.8) 2155/5003 (43.1) 6.6 0.2 (−1.3 to 1.7) 1148/2155 (53.3) 11 4.4 (1.8 to 7)

 Surgery, general 1232/4455 (27.7) 12.3 5.4 (4 to 6.8) 2294/4455 (51.5) 15 4.3 (2.8 to 5.8) 1232/2294 (53.7) 11.4 6.6 (4 to 9.2)

 Surgery, subspecialty 1765/6129 (28.8) 13.4 3.5 (2.2 to 4.7) 3279/6129 (53.5) 17 3.2 (1.8 to 4.6) 1765/3279 (53.8) 11.5 3.7 (1.3 to 6.1)

Publications (per 1 publication)e

 Total 0.2 (0.2 to 0.2) 0.4 (0.3 to 0.4) 0.2 (0.2 to 0.2)

 First or last author 0.1 (0.1 to 0.2) 0.2 (0.2 to 0.3) 0.2 (0.2 to 0.3)

NIH grantf

 No 16 142/82 777 (19.5) 1 [Reference] 34 157/82 777 (41.3) 1 [Reference] 16 142/34 157 (47.3) 1 [Reference]

 Yes 4835/8296 (58.3) 38.8 3.9 (3.0 to 4.7) 6897/8296 (83.1) 41.8 3.7 (2.5 to 4.8) 4835/6897 (70.1) 22.8 4.7 (3.3 to 6.1)

Clinical trial investigator

 No 17 586/83 763 (21.0) 1 [Reference] 35 621/83 763 (42.5) 1 [Reference] 17 586/35 621 (49.4) 1 [Reference]

 Yes 3391/7310 (46.4) 25.4 5.9 (5.1 to 6.8) 5433/7310 (74.3) 31.8 8.4 (7.4 to 9.5) 3391/5433 (62.4) 13 6.4 (5 to 7.8)

Top-20 medical school 13 879/65 007

 No 7098/26 066 (21.4) 1 [Reference] 27 855/65 007 (42.8) 1 [Reference] 13 879/27 855 (49.8) 1 [Reference]

 Yes 17 586/83 763 (27.2) 5.8 1.5 (−1.5 to 4.5) 13 199/26 066 (50.6) 7.8 −0.1 (−4.3 to 4.2) 7098/13 199 (53.8) 4 1.4 (−2.4 to 5.2)

Abbreviation: NIH, National Institutes of Health; OB/GYN, obstetrics and gynecology.

a

Factors associated with full professorship among faculty of all ranks.

b

Factors associated with associate or full professorship among faculty of all ranks.

c

Factors associated with full professorship among faculty at the associate or full professor rank.

d

Each model estimated the association between faculty rank and physician sex, adjusted for age, years since residency, specialty, publications (total, as well as first and last author), whether a physician was ever principal investigator on an NIH grant, whether a physician had conducted a clinical trial, and whether a physician was faculty at a top-20 US medical school in terms of US News & World Report 2013 medical school research ranking.

e

Number of authored scientific publications was based on publications indexed in the US National Library of Medicine’s PubMed database (not excluded to first- or last-author publications). The reported association between faculty rank and publication count (or years since residency) reflects the marginal effect of an additional publication (or year after residency) on the probability of a given faculty rank.

f

NIH grant information was obtained from the NIH RePORT grants database. Clinical trial information was obtained from ClinicalTrials.gov database.