Table.

Characteristics of Medicare Enrollees Aged 55 to 77 Years Who Underwent LDCT Screening for Lung Cancer in 2016 and Had a Shared Decision-Making Visit Regarding LDCT Screening in the Previous 3 Months

Enrollee Characteristic	No. of Patients With LDCT (n = 19 021)	Patients With SDM in 3 Months Before LDCT, No. (%) (n = 1719)	OR (95% CI)a
Age, y
55–59	1760	152 (8.64)	1 [Reference]
60–64	1912	189 (9.88)	1.21 (0.94–1.54)
65–69	8229	768 (9.33)	1.16 (0.93–1.43)
70–74	5616	482 (8.58)	0.99 (0.80–1.24)
75–77	1504	128 (8.51)	0.99 (0.76–1.30)
Race/Ethnicity
Black	1203	93 (7.73)	0.76 (0.59–0.97)
Hispanic	445	33 (7.42)	0.74(0.49–1.11)
Others	688	51 (7.41)	0.87 (0.63–1.19)
White	16 685	1542 (9.24)	1 [Reference]
Sex
Male	9751	928 (9.52)	1 [Reference]
Female	9270	791 (8.53)	0.88 (0.79–0.98)
Medicaid eligible
No	15 268	1383 (9.06)	0.93 (0.79–1.08)
Yes	3753	336 (8.95)	1 [Reference]
Region
New England	2236	89 (3.98)	1 [Reference]
Mid-Atlantic	2421	181 (7.48)	1.98 (1.50–2.61)
South Atlantic	4507	498 (11.05)	2.96 (2.30–3.79)
East North Central	3118	290 (9.30)	2.25 (1.73–2.93)
West North Central	1547	156 (10.08)	2.79(2.10–3.71)
East South Central	1656	158 (9.54)	2.42 (1.81–3.23)
West South Central	1221	122 (9.99)	2.65 (1.95–3.58)
Mountain	757	110(14.53)	4.46 (3.27–6.08)
Pacific	1558	115 (7.38)	1.92 (1.41–2.60)
Percentage of patients in zip code area with high school education
Q1 (≤83%)	4171	400 (9.59)	1 [Reference]
Q2 (84%−89%)	4147	402 (9.69)	1.03 (0.88–1.20)
Q3 (90%−93%)	4189	244(9.74)	1.05 (0.89–1.22)
Q4 (≥94%)	4181	316(7.56)	0.81 (0.68–0.96)
Comorbidities, No.
0–1	7376	667 (9.04)	1 [Reference]
2–3	5861	551 (9.40)	1.04(0.92–1.17)
≥4	3451	308 (8.92)	0.98 (0.84–1.13)

Abbreviations: LDCT, low-dose computed tomography; OR, odds ratio; Q, quartile, SDM, shared decision-making.

^aORs were calculated from a logistic regression analysis including all variables shown in the Table.