Table 2

The incidence of resident physician-reported adverse safety outcomes before and after the 16 hours 2011 ACGME work-hour limit

	2002–2007			2014–2017			Incidence rate ratio	P value
	Months	Outcomes	Rate per person-year	Months	Outcomes	Rate per person-year	Incidence rate ratio	P value
Attentional failures	30 155	12 777	5.085	47 946	13 799	3.454	0.67	<0.001
Medical errors	30 155	10 660	4.242	47 946	14 506	3.631	0.86	<0.001
Fatigue-related	30 155	6390	2.543	47 946	8719	2.182	0.86	0.001
Non-fatigue-related	30 155	4270	1.699	47 946	5787	1.448	0.85	0.007
PAE	30 155	780	0.310	47 946	893	0.224	0.72	<0.001
Fatigue-related	30 155	354	0.141	47 946	435	0.109	0.77	0.002
Non-fatigue-related	30 155	426	0.170	47 946	458	0.115	0.68	<0.001
Fatal PAE	30 155	171	0.068	47 946	103	0.026	0.38	<0.001
Fatigue-related	30 155	106	0.010	47 946	58	0.004	0.40	0.02
Non-fatigue-related	30 155	65	0.010	47 946	45	0.005	0.51	<0.001

P values were obtained from generalised log-linear regression models. Created by the authors.
ACGME, Accreditation Council for Graduate Medical Education; PAE, preventable adverse event.