In a case-control study of 285 subjects with Alzheimer's dementia and 1,080 control subjects, the number of patients with dyslipidemia was recorded for each group. Among the subjects with dyslipidemia who had taken statins, the odds ratio for developing dementia was 0.29 (95%CI,
0.13-0.63). Which of the following statements can accurately be made about the relationship between the taking of statins and the development of dementia in this study?