To the Editor In the study of flexible sigmoidoscopy screening and colorectal cancer incidence and mortality by Dr Holme and colleagues,1 the authors reported adjusted analyses of results without reporting either the measured results or the implications of their adjustments. Based on the data available in the article, the relative risk for colorectal cancer mortality in the screening vs control groups is 0.82 (95% CI, 0.63-1.06) and the rate ratio is 0.80 (95% CI, 0.61-1.04); neither are statistically significant.
Swartz AW. Colorectal Cancer and the Effect of Flexible Sigmoidoscopy Screening. JAMA. 2014;312(22):2411. doi:10.1001/jama.2014.14692