Table 2. Average proportions of queries across 4 topic groups.^a.

	Clinical	Research	Administration	Non–health care
Gender
Female	0.154	0.588	0.027	0.232
Male	0.108	0.609	0.018	0.265
P value	<.001	<.001	<.001	<.001
Age (years)
≤25	0.146	0.58	0.02	0.254
(25,40]	0.115	0.607	0.02	0.258
>40	0.103	0.664	0.024	0.208
P value	<.001	<.001	<.001	<.001
Device type
Computer	0.107	0.637	0.018	0.238
Mobile	0.264	0.296	0.043	0.393
P value	<.001	<.001	<.001	<.001
Department
Clinical	0.133	0.634	0.022	0.211
Medical tech	0.141	0.54	0.027	0.293
Others	0.078	0.418	0.014	0.49
P value	<.001	<.001	<.001	<.001

^aWe evaluated the average proportions of queries across the 4 topic groups: clinical practice, medical research, administration, and non–health care. Group means across gender, age, device type, and department (ie, physician specialty) were considered. Systematic differences in patterns of use across physician demographics and device types were observed.