alexa Sensitivity and specificity of lung cancer screening using chest low-dose computed tomography.
Mathematics

Mathematics

Journal of Biometrics & Biostatistics

Author(s): Toyoda Y, Nakayama T, Kusunoki Y, Iso H, Suzuki T

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Abstract Lung cancer screening programmes using chest X-ray and sputum cytology are routinely performed in Japan; however, the efficacy is insufficient. Screening using low-dose computed tomography (CT) is a more effective approach and has the potential to detect the disease more accurately. A total of 7183 low-dose CT screening tests for 4689 participants and 36 085 chest X-ray screening tests for 13 381 participants were conducted between August 1998 and May 2002. Sensitivity and specificity of lung cancer screening were calculated by both the detection method and the incidence method by linkage of the screening database and the Cancer Registry database. The preclinical detectable phase was assumed to be 1 year. Sensitivity and specificity by the detection method were 88.9 and 92.6\% for low-dose CT and 78.3 and 97.0\% for chest X-ray, respectively. Sensitivity of low-dose CT by the incidence method was 79.5\%, whereas that of chest X-ray was 86.5\%. Lung cancer screening using low-dose CT resulted in higher sensitivity and lower specificity than traditional screening according to the detection method. However, sensitivity by the incidence method was not as high as this. These findings demonstrate the potential for overdiagnosis in CT screening-detected cases.
This article was published in Br J Cancer and referenced in Journal of Biometrics & Biostatistics

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