. 2017 Jul 17;18(5):846–855. doi: 10.5811/westjem.2017.5.33827

Table 3.

Mean response to each motivational factor, barrier, and helpful resource for emergency medicine (EM), family medicine (FM), infectious disease (ID), and obstetrics and gynecology (OB/GYN) respondents to a survey regarding participation in clinical trials.

Variables	EM	FM	ID	OB/GYN
Motivational factors
My relationship with my doctor	2.54^*^a	2.99^b	3.35^c	3.16^b,c
Doctor’s reputation in the community	2.6^a	3.01^b	3.11^b	3.37^c
How well the research is explained to me	3.02^a,c	3.21^c	3.35^b,c	3.44^b
My desire to please the doctor	1.59^a,b	1.36^a	1.73^b	1.57^a,b
Money offered for my participation	1.84^a	1.77^a	1.89^a,b	2.17^b
A friend or family member participating in the same study	1.73^a,b	1.6^b,c	1.39^c	1.89^a
The doctor conducting the research is the same gender (sex) as me	1.15^a	1.07^a	1.02^a	1.56^b
The doctor conducting the research is the same race/ethnicity as me	0.86^a	0.71^a	0.73^a	0.96^a
The doctor conducting the research speaks the same language as I do	1.79^a	1.81^a	2.04^a,b	2.23^b
Knowledge learned from my participation will benefit someone in the future	2.94^a	3.05^a	3.32^b	3.18^a,b
Barriers
My distrust in doctors	1.85^a	1.79^a	1.66^a	2.36^b
Time commitment	2.17^a	2.56^b	2.28^a	2.74^b
My family’s concern	2.4^a	2.26^a,b	1.99^b	2.32^a
My religious beliefs	1.56^a	1.21^b	1.23^b	1.58^a
Clinical research studies are too hard to understand	1.42^a	1.28^a	1.26^a	1.69^b
Study related phone calls for follow-ups	1.7^a	1.65^a	1.53^a	1.99^b
Multiple follow-up visits related to the study	1.88^a	2.11^a,b	1.84^a	2.35^b
Risk of unknown side effects	2.78^a,c	3.07^c,b	2.59^a	3.25^b
Access to transportation	1.78^a	1.46^b	1.64^a,b	1.8^a
Helpful resources
Written material explaining the research study	2.8^a	3.0^a	3.0^a	3.02^a
DVDs or electronic material explaining the research study	2.6^a	2.74^a	2.7^a	2.82^a
Having opportunity to speak to a patient who has participated in a clinical research study	2.66^a	2.73^a	2.63^a	3.04^b
Having access to a support group of patients who have participated in clinical research	2.52^a	2.51^a	2.44^a	2.67^a
Having all material provided in my own language	3.01^a	3.0^a	3.09^a	3.24^a
Having access to a medical interpreter throughout the study	2.38^a	2.3^a	2.23^a	2.51^a

Values with at least one letter the same indicate specialties for which there was no statistically significant association as determined by pairwise comparisons of mean ranks.