Table 1

 Inter-observer variation of radiologists assessing chest CT scans

Radiologist 1 (Mean±SD)Radiologist 2 (Mean±SD)t test95% CI*
*If 0 is included in the confidence interval the difference between the means is not statistically significant.
Bhalla score—total lung CT scans5.4±3.15.6±30.8−1.5 to 1.3
Bhalla score—6 CT cuts5.2±2.95.5±2.90.691−1.6 to 1.1
Nathanson score—total lung CT scans66.1±4.966.1±51−2.3 to 2.3
Nathanson score—6 CT cuts66.5±4.566.5±4.81−2.2 to 2.2