Table 1.

Patient demographics in the unadjusted cohort and inverse probability weighted cohort.

	Unadjusted Cohort		p	IPW Adjusted Cohort		p
	14–30 days	31–90 days		14–30 days	31–90 days
	N = 63,568 (59%)	N = 44,206 (41%)		Na = 63,607 (59%)	Na = 44,157 (41%)
Age, mean (SD)	70.3 (11.6)	71.4 (11.4)	<0.001	70.8 (11.4)	70.8 (11.6)	0.69
Female sex	52.4	51.3	0.001	51.9	51.9	0.97
Race			<0.001			1.00
White	87.9	84.2		86.4	86.4
Black	8.3	11.6		9.7	9.7
Native American	0.2	0.3		0.2	0.2
East Asian or Polynesian	2	2.2		2.1	2.1
South Asian	0.2	0.3		0.3	0.3
Other or Unknown	1.3	1.4		1.3	1.3
Ethnicity			<0.001			0.99
Not Hispanic	89.8	88.8		89.4	89.4
Hispanic	3.5	5		4.1	4.1
Unknown	6.7	6.2		6.5	6.4
Median Income			<0.001			0.99
Quartile 1	15.9	17.5		16.5	16.6
Quartile 2	24.2	23.3		23.7	23.7
Quartile 3	27.3	27.1		27.2	27.2
Quartile 4	32.7	32.2		32.5	32.5
HS Diploma Attainment			<0.001			1.00
Quartile 1	14.3	16.8		15.3	15.3
Quartile 2	25.2	26.1		25.5	25.5
Quartile 3	34.7	34.1		34.5	34.5
Quartile 4	25.9	23		24.7	24.7
Charlson/Deyo Score			<0.001			1.00
0	68.6	63.5		66.5	66.4
1	23.5	25.8		24.5	24.5
2	5.9	7.7		6.7	6.7
3+	1.9	3		2.4	2.4
Distance to Facility			0.001			0.88
<20 mi	79.4	78.6		79.1	79.1
>20 mi	20.6	21.4		20.9	20.9
Insurance type			<0.001			0.99
No Insurance	1.4	1.7		1.5	1.5
Private Insurance	31.8	27.4		30	29.9
Government Healthcare Plan	65.5	69.3		67.1	67.2
Unknown	1.3	1.6		1.4	1.4
NCDB Stage			<0.001			0.84
Stage I (T1/2, N0)	43.8	49.9		46.3	46.4
Stage II (T3, N0)	56.2	50.1		53.7	53.6
Facility type			<0.001			1.00
Community Cancer Center	12.9	10.8		12	11.9
Comprehensive Cancer Center	51.2	44.9		48.7	48.7
Academic/Research Cancer Center	25.6	32.6		28.4	28.5
Integrated Network Cancer Program	10.3	11.7		10.9	10.9
Adjuvant chemo			<0.001			0.94
No	87.6	90.5		88.8	88.8
Yes	8.3	5.4		7.1	7.1
Unknown	4.1	4.1		4.1	4.1

^aInverse probability of treatment weight-adjusted.