Table 4.

General linear model. A multivariate analysis was performed to estimate the impact of gender, years since medical school graduation, h index and academic rank on industry payments in 2018. The model demonstrated that male gender, greater years since graduation, higher h index and higher academic rank are significantly associated with higher industry payments. Estimate: estimate of relationship of each variable on total payments; SE: standard error of the estimate; t stat: t statistic.

	Estimate	SE	t stat	p-value
Male gender	2.72	0.41	2.42	0.016
Years since graduation	0.93	0.02	−3.76	<0.0001
H index	1.04	0.01	2.60	0.010
Academic rank
Instructor	0.86	0.88	−0.18	0.860
Assistant	1.94	0.49	1.34	0.182
Associate	3.17	0.57	2.04	0.042
Professor	7.37	0.68	2.94	0.003