236 Chapter 9 Table S2 Incidental findings: ULDCT versus CXRa ULDCT (n = 1200)b CXR (n = 1203)b Effect estimate (95% CI) Incidental findings 100 (8.3) 14 (1.2) Pulmonary nodules 54 7 Pulmonary other 4 2 Cardiovascular 19 3 Upper abdomen 13 1 Musculoskeletal 6 1 Breast 3 0 Neck 1 0 Mediastinum 1 0 In follow-up because of incidental findings 28 days 26 (2.2) 4 (0.3) 1.8 (1.0 to 2.7) Pulmonary nodules 21 4 1.4 (0.6 to 2.2) Pulmonary other 2 0 Upper abdomen 3 0 ULDCT: Ultra-low-dose chest computed tomography, CXR: Chest X-ray, CI: Confidence Interval. a Values are numbers (percentages) unless otherwise specified. b In imaging-per-protocol population.
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