Table 3.

Factors associated with use of chest X-ray and chest CT to check for lung cancer, multivariate logistic regression

Chest X-rayChest CT
OR (95% CI)OR (95% CI)
Sociodemographic characteristics
Age, y
40–491.00 (referent)1.00 (referent)
50–592.08 (1.36–3.19)1.69 (0.92–3.11)
60–692.30 (1.56–3.40)2.63 (1.46–4.75)
70–792.53 (1.61–3.97)1.95 (1.02–3.74)
80+3.17 (1.82–5.52)2.24 (1.08–4.66)
Sex
Female1.00 (referent)1.00 (referent)
Male1.67 (1.29–2.15)1.83 (1.29–2.59)
Race/ethnicity
White1.00 (referent)1.00 (referent)
Black1.84 (1.38–2.45)1.69 (1.08–2.64)
Hispanic1.04 (0.71–1.54)1.15 (0.69–1.94)
Asian0.89 (0.48–1.66)1.43 (0.64–3.16)
Other1.05 (0.41–2.71)0.94 (0.21–4.11)
Family income
<$20,0001.00 (referent)1.00 (referent)
$20,000–$34,9991.05 (0.73–1.53)0.71 (0.43–1.18)
$35,000–$54,9991.13 (0.75–1.71)0.89 (0.54–1.46)
$55,000–$74,9991.16 (0.72–1.86)0.55 (0.27–1.12)
$75,000+1.00 (0.65–1.54)0.69 (0.41–1.17)
Risk factors
Smoking
Never1.00 (referent)1.00 (referent)
Lower riska smokers1.73 (1.30–2.29)1.52 (1.01–2.29)
Higher riska smokers3.31 (2.29–4.80)2.16 (1.34–3.48)
Unknown0.75 (0.43–1.30)0.66 (0.27–1.60)
Personal history of cancer other than lung
No1.00 (referent)1.00 (referent)
Yes2.93 (2.19–3.93)5.36 (3.64–7.88)
Health status
Respiratory conditions diagnosed by a health professional
None1.00 (referent)1.00 (referent)
Emphysema (ever)2.80 (1.72–4.54)2.72 (1.56–4.75)
Other1.89 (1.35–2.65)1.79 (1.13–2.83)
Limitations in activities due to lung/breathing problem
No1.00 (referent)1.00 (referent)
Yes1.62 (1.05–2.49)2.61 (1.49–4.55)
Health care access
Insurance status
Uninsuredb1.00 (referent)1.00 (referent)
Public only1.82 (1.02–3.26)2.75 (1.13–6.69)
Privatec1.55 (0.86–2.80)2.84 (1.16–6.97)

NOTE: Source: 2010 NHIS. ORs are adjusted for all other variables in the table.

  • aRisk defined according to eligibility criteria used in the NLST of LDCT. Those at higher risk include current and former smokers with at least a 30 pack-year history; in addition, for classification as high risk, former smokers must have quit within the last 15 years.

  • bIncludes Medicare Part A only.

  • cIncludes Medicare Part A and B with supplemental private insurance.