Table 2.
Rates of Testing 12 Mo in the LDCT Cohort and in a Matched Control Cohort That Did Not Undergo LDCT
| Test | LDCT (n = 11,520)a | Control Patients (n = 11,520)b | Adjusted Rate (95% CIc) |
|---|---|---|---|
| Any chest imaging (not including LDCT) | 20.66 (19.92-21.40) | 6.90 (6.43-7.37) | 13.76 (12.88-14.64) |
| Any chest imaging (including LDCT) | 24.86 (24.07-25.65) | 7.15 (6.68-7.63) | 17.71 (16.78-18.64) |
| CT | 20.56 (19.81-21.30) | 6.79 (6.32-7.25) | 13.77 (12.89-14.65) |
| PET/MRI | 0.29 (0.18-0.39) | 0.16 (0.08-0.23) | 0.13 (0.00-0.26) |
| Any procedure | 3.71 (3.36-4.06) | 0.57 (0.43-0.72) | 3.13 (2.75-3.51) |
| Bronchoscopy | 2.33 (2.05-2.61) | 0.32 (0.21-0.43) | 2.01 (1.70-2.31%) |
| Percutaneous biopsy | 1.48 (1.26-1.71) | 0.19 (0.11-0.28) | 1.29 (1.05-1.54) |
| Mediastinoscopy | 0.23 (0.14-0.33) | 0.01 (0.00-0.03) | 0.23 (0.13-0.32) |
| Thoracoscopy | 1.01 (0.82-1.19) | 0.07 (0.02-0.12) | 0.94 (0.74-1.13) |
| Thoracotomy | 0.43 (0.30-0.55) | 0.04 (0.00-0.09) | 0.38 (0.25-0.52) |
Data are presented as percent (95% CI). See Table 1 legend for expansion of abbreviation.
a
LDCT cohort consisted of LDCT identified by Current Procedural Terminology codes G0297 or S8032. Enrollees were aged 55 to 80 y and had complete insurance coverage 12 mo after LDCT.
b
Control patients: among those patients with no LDCT scan in 2016, subjects were matched to the LDCT group by age, sex, and number of comorbidities.
c
95% CI for difference was calculated by Wald method.