The same nurses evaluatedenvironmental hazards at the inception and, again, 12weeks after the intervention.The subjectsʼ perception of the safety of their homeenvironments was self-rated on a 5-point scale (1 = thesafest home environment and 5 = the least safe homeenvironment). This item was developed by the studyinvestigators. A single item was chosen on the basisof simplicity and ease of use.