Feasibility of an Online, Self-administered Cognitive Screening Tool in Older Patients Undergoing Ambulatory Surgery

BHA is a free, self-administered online cognitive screening test developed in Toronto at Baycrest (www.cogniciti.com). BHA has been validated against a gold standard neuropsychological assessment for detecting amnestic MCI (aMCI) - the most common type of MCI - in community dwelling older adults. BHA has high sensitivity (.78), specificity (.78), PPV (.82), NPV (.74), and was better than MoCA for identifying aMCI. ROC curves showed an AUC of 0.75 for detecting aMCI from normal subjects. BHA measures memory and executive attention processes sensitive to subtle cognitive changes associated with normal aging and MCI. BHA can be completed from a patient's home or can be self-administered in hospital.

To compare the sociodemographic characteristics of patients completing Cogniciti's BHA vs. those who are not able to complete the BHA.

PHQ-2 is a shortened version of PHQ-9 which is originally a component of the longer Patient Health Questionnaire. The tool incorporates DSM-IV depression criteria and other leading major depressive symptoms into brief self-reported instruments. PHQ-2 inquires about the degree to which an individual experiences depression and anhedonia (inability to feel pleasure) over the past two weeks. The tool is not for final diagnosis of depression or monitoring its severity but only for the purpose of screening for the condition.The questionnaire comprises of the first two questions from PHQ-9, each item is scored 0-3. Therefore, the PHQ-2 score ranges from 0-6.

AFT is a free, rapid cognitive assessment commonly used to assess semantic language ability. Language is one of the earliest functions affected by AD and naming and semantical knowledge seems to be particularly affected. The identification of language deficits may pick up signs of neurological decline preceding the appearance of clinical symptoms. Milder forms of cognitive impairment such as MCI may also show language deficits if language is one of the domains affected.

GAI-SF is a 5-item questionnaire derived from the original 20-item Geriatric Anxiety Inventory (GAI).In the population of community dwelling older women GAI-SF was developed in, a cut-off score of 3 yields a specificity of 87% and sensitivity of 75%. This highly accessible questionnaire is suitable for everyday use in a range of health-care settings. It has been employed amongst older adults in primary care settings, nursing homes, geriatric psychiatry patients and amongst clinical geriatric participants with co-morbid anxiety and unipolar mood disorder and their controls.

The VAS is a unidimensional measure of pain intensity. The VAS tries to measure a continuous characteristic or attitude signifying the intensity or frequency of symptoms. The scale ranges from 0-10, with 0 = no pain to 10 = worst pain.

Instrumental activities such as preparing meals or managing finances allow individuals to maintain their health while living on their own. The IADL measures the ability of older adults to manage their daily activities, as well as the impact, if any, cognitive decline would have on these activities. Scores range from 0-5 for men, and 0-8 for women, with higher sores being more independent and higher functioning.

FAM-CAM was derived from the CAM instrument in order to screen for delirium by interviewing family members or caregivers of the patient. They are asked specific questions about any new or sudden changes in the patient's activity, behavioural or cognitive status. FAM-CAM showed good sensitivity and specificity in the original study where caregivers of elderly patients with pre-existing cognitive impairment were interviewed.

The 4AT is a rapid tool for delirium detection that has previously been used in a surgical setting. The 4Ats test for the patient's alertness, mental state, attention, and signs of acute change. Across 17 studies, the pooled sensitivity and specificity of 4AT was 0.86 and 0.89. The 4AT will be administered after the patient has completed surgery, prior to discharge.

The survey aims to assess system usability and acceptability based on standard questions adapted from the validated System Usability Scale. The questions evaluate satisfaction, experience with technology, and comfort level, as well as questions targeting usability concerns typically experienced by older adults, such as typeface and font size, consistent navigation, and writing style.

CFS is a 9-item scale that uses clinical descriptors and pictographs and is an easily applicable tool to stratify older adults according to level of vulnerability. The CFS divides patients into 9 classes from very fit (CFS = 1) to terminally ill (CFS = 9). It is easy to use and may readily be administered in a clinical setting, an advantage over the tools previously developed. The scale helps in objective early identification of older adults with frailty in acute care units and helps to target interventions to prevent complications and to implement effective discharge planning.