Table 1.

Cohort Characteristics by Receipt of Surgery

	Total Cohort		Surgery		No Surgery		P value
	N=374		N=199		N=174
	N	%	N	%	N	%
Agea							<0.0001
65–69	23	6%	17	9%	-
70–74	87	23%	65	33%	22	13%
75–79	112	30%	73	37%	39	22%
80–84	77	21%	28	14%	49	28%
85+	75	20%	16	8%	58	33%
Race/Ethnicitya							0.61
White	298	80%	160	80%	138	79%
Black	25	7%	11	6%	14	8%
Hispanic	25	7%	15	8%	-
Asian/Other	26	7%	13	7%	13	7%
Married	162	43%	99	50%	63	36%	0.009
Geographic region							0.35
West	213	57%	122	61%	91	52%
Midwest	33	9%	17	9%	16	9%
South	60	16%	28	14%	32	18%
Northeast	68	18%	32	16%	35	20%
Level of educationa							0.02
Some high school	223	60%	≥100	≥50%	≥115	≥65%
Some college	102	27%	65	33%	37	21%
More than college	41	11%	23	12%	18	10%
Missing	-		-		-
Household income							0.81
<$10,000	52	14%	26	13%	26	15%
$10,000–$29,999	147	39%	80	40%	66	38%
$30,000–$49,999	60	16%	30	15%	30	17%
$50,000+	43	11%	26	13%	17	10%
Missing	72	19%	37	19%	35	20%
Home owning
Owned by you/family	291	78%	160	80%	130	75%	0.08
Not owned/rented	66	18%	32	16%	41	24%
Smoking status							0.52
Never	267	71%	139	70%	127	73%
Former	59	16%	34	17%	25	14%
Current	31	8%	19	10%	12	7%
Proxy completed survey	27	7%	11	6%	15	9%	0.48
Completed paper survey	333	89%	178	89%	154	89%	0.77
Comorbid conditions
Hypertension	229	61%	110	55%	118	68%	0.01
Heart disease	117	31%	51	26%	66	38%	0.01
Stroke	23	6%	11	6%	12	7%	0.57
COPDb	46	12%	22	11%	24	14%	0.36
IBDc	20	5%	-		-		-
Arthritis	182	49%	90	45%	92	53%	0.14
Sciatica	98	26%	51	26%	47	27%	0.68
Diabetes	71	19%	33	17%	38	22%	0.20

^aSome category data suppressed due to individual cell sizes < 11, in accordance with data use agreement of SEER-MHOS dataset.

^bchronic obstructive pulmonary disease

^cinflammatory bowel disease