All eight domains were predictive for at least one of the investigated outcomes but the results were quite variable across studies .
Physical function and nutritional status were the domains most often associated with mortality and systemic treatment-related outcomes , and the domain physical function was most often associated with postoperative complications .
Overall , this review demonstrates that the GA should minimally consist of physical function and nutritional status , when the aim is to predict patients -related outcomes of older patients with cancer , although the results are quite heterogeneous .
BACKGROUND A geriatric assessment ( GA ) is increasingly used to help guide treatment decisions in older patients with cancer .
However , there is no consensus regarding which domains should be included in the GA .
In addition , the field of geriatric oncology moves very fast and as a result many new studies have been published since the last review in 2015 .
Therefore , the objective of this systematic review is to evaluate which domains of the GA could predict patient-related treatment outcomes of older patients with cancer and thereby should be included in a GA .
Cumulative deficit model of geriatric assessment to predict the postoperative outcomes of older patients with solid abdominal cancer.
OBJECTIVE The geriatric assessment ( GA ) has proven to be of great value for clinicians treating older patients . However , a clear consensus on the optimal set of GA instruments is lacking , particularly for surgical patients . Therefore , the aim of this prospect i ve study was to compare the prevalence of frailty , depending on the number of incorporated GA domains , and to evaluate its accuracy in predicting postoperative outcome . MATERIAL S AND METHODS Seventy-five patients aged 65 years and older , qualified for abdominal surgery due to solid cancer , were enrolled . The GA included a wide variety of vali date d tools that evaluate functional , mobility , nutritional , co-morbidity , polypharmacy , and psychosocial domains .  RESULTS Depending on the number of incorporated GA domains the frequency of frailty was 23 - 97 % . The cumulative score rather than individual components of the GA , turned out to be an independent risk factor of 30-day postoperative morbidity . In predicting 30-day " any " and " major " morbidities , the area under the curve was 0.67 - 0.72 and 0.70 - 0.82 ( model including the severity of the surgery ) vs. 0.57 - 0.66 and 0.50 - 0.65 ( model not including the severity of the surgery ) , respectively . CONCLUSION The number of incorporated GA domains has a great influence on the prevalence of frailty and on adequate surgical risk assessment . The summary deficit score based on Pre-operative Assessment of Cancer in the Elderly ( PACE ) or the GA consisting of functional , mobility , cognitive , depression , nutritional , co-morbidity , polypharmacy , and social support assessment domains can predict 30-day postoperative morbidity . However , only models with addition of the severity of surgery show moderate to good predictive value
All eight domains were predictive for at least one of the investigated outcomes but the results were quite variable across studies .
Physical function and nutritional status were the domains most often associated with mortality and systemic treatment-related outcomes , and the domain physical function was most often associated with postoperative complications .
Overall , this review demonstrates that the GA should minimally consist of physical function and nutritional status , when the aim is to predict patients -related outcomes of older patients with cancer , although the results are quite heterogeneous .
BACKGROUND A geriatric assessment ( GA ) is increasingly used to help guide treatment decisions in older patients with cancer .
However , there is no consensus regarding which domains should be included in the GA .
In addition , the field of geriatric oncology moves very fast and as a result many new studies have been published since the last review in 2015 .
Therefore , the objective of this systematic review is to evaluate which domains of the GA could predict patient-related treatment outcomes of older patients with cancer and thereby should be included in a GA .