Table 1. Six identified studies that analyze associations between lung SBRT, race, and socioeconomic factors.

Author & date	Title of article	Number of patients	Study period	Data source	NSCLC stage	SES factors examined
Holmes et al. 2018 (25)	Racial disparities in time from diagnosis to treatment for stage I non-small cell lung cancer	119,184	2008–2013	National Cancer Database (NCDB)	Stage I	Race
Koshy et al. 2015 (26)	Disparities in treatment of patients with inoperable stage I non-small cell lung cancer: A population-based analysis	39,822	2003–2011	NCDB	Stage I	Race, location
Corso et al. 2015 (27)	Racial disparities in the use of SBRT for treating early-stage lung cancer	113,312	2003–2011	NCDB	Stage I	Race, income, education
Rengan et al. 2014 (28)	Impact of sociodemographic factors on the radiotherapeutic management of lung cancer: Results of a quality research in radiation oncology survey	340	2006–2007	45 participating institutions	Stage I-III	Location, income, education
Haque et al. 2018 (29)	Stereotactic body radiation therapy versus conventionally fractionated radiation therapy for early stage non-small cell lung cancer	23,088	2004–2015	NCDB	Stage I	Race, income, location
Dalwadi et al. 2019 (30)	Disparities in the treatment and outcome of stage I non-small-cell lung cancer in the 21st century	62,312	2004–2012	Surveillance, Epidemiology, and End Results Database (SEER)	Stage I	Race