Table 5.
Authorship summary scores and author ranks according to the authors’ degrees
| Authors’ degrees | |||||||
| MD only (n=411) |
MD and master’s (n=175) |
MD and PhD (n=106) |
PhD (n=248) |
Master’s (n=135) |
Other (n=64) |
||
| Profile scores, mean (SD) | p Value* | ||||||
| Thinker | 0.05 (0.95) | 0.41 (0.84) | 0.24 (0.86) | 0.04 (1.02) | −0.58 (1.04) | −0.79 (0.86) | <0.001 |
| Scribe | −0.36 (0.87) | −0.02 (0.99) | 0.00 (0.97) | 0.46 (1.00) | 0.45 (0.95) | −0.40 (0.85) | <0.001 |
| Soldier | 0.08 (0.98) | −0.13 (1.02) | 0.21 (1.17) | −0.38 (0.87) | 0.17 (0.91) | 0.62 (0.89) | <0.001 |
| Author rank, n (row %) | p Value† |
||||||
| First | 41 (31.8) | 29 (22.5) | 15 (11.6) | 30 (23.3) | 7 (5.4) | 7 (5.4) | <0.001 |
| Second | 33 (30.3) | 16 (14.7) | 7 (6.4) | 26 (23.9) | 24 (22.0) | 3 (2.8) | 0.09 |
| Middle | 262 (39.3) | 82 (12.3) | 50 (7.5) | 137 (20.5) | 89 (13.3) | 47 (7.0) | reference |
| Next to last | 39 (33.9) | 14 (12.2) | 15 (13.0) | 27 (23.5) | 14 (12.2) | 6 (5.2) | 0.031 |
| Last | 36 (30.3) | 34 (28.6) | 19 (16.0) | 28 (23.5) | 1 (0.8) | 1 (0.8) | <0.001 |
*From linear regression models with the profile score as dependent variable, article as random factor and author degree category as fixed factor.
†From conditional logistic regression model with each author rank as dependent variable (versus middle position) and author degree category as predictor, conditional on article. p Values are for comparison with middle author rank.