However, there were no significant associations between the presence of ADH and dementia (p = 0.67, IC95% (0.5669–0.7730)), stroke (p = 0.08, IC95% (0.205–0.1394)), Parkinson’s disease (p = 0.21 IC95% (0.1207–0.2992)), or past arbovirus infection (p = 0.44 IC95% (0.5549–0.8087)). This evidence concerns the gene AVP and dementia.