. Author manuscript; available in PMC: 2015 Apr 23.

Published in final edited form as: Respir Med. 2009 Dec 4;104(4):578–583. doi: 10.1016/j.rmed.2009.09.023

Table 2.

Socioeconomic factors associated with clinical trial participation.

Variables	Overall number measured	Clinical trial participants	Non-participants	p-value
Employed, number (%)	263	17 (41)	98 (44)	0.751
On Disability, number (%)	178	16 (50)	47 (32)	0.056
College educated, number (%)	263	30 (73)	199 (90)	0.009
Income, number (%)	227
Less than $30,000/year		3 (9)	25 (13)	0.775
Greater than $100,000/year		9 (28)	54 (28)	1.00
Insurance coverage, number (%)	256	41 (100)	212 (99)	0.447
Disease related job loss (%)	179	15 (47)	35 (24)	0.008