Nollen NL, et al. - In this prospective intervention study, investigators assessed 224 black and 225 white low-income smokers to identify factors that demonstrate variations in smoking abstinence among them. A priori socioeconomic, smoking, treatment process like treatment utilization, side effects, withdrawal relief, psychosocial, and biological factors were evaluated. They found that the following five factors associated with race jointly predicted abstinence: lack of home ownership, lower income, greater neighborhood problems, higher baseline cotinine, and higher visit completion.