“…ECOG PS was highly correlated with physical function (Smith et al, 2012) and is the main correlate of not working (Phipps et al, 2011;Gomes et al, 2012;Pantilat et al, 2012). Poor ECOG PS of a patient would become a greater stressor for the caregiver (Tordoff et al, 2012) and family caregivers of terminal cancer patients who had poor ECOG PS scores were likely to need more assistance with patients dependent on care for activities of daily living or IADL including help with transportation, shopping, homemaking, emotional support, nutritional care, nursing care, and personal care (Baker et al, 2011;Chochinov et al, 2011;Cohen et al, 2012;Fairfield et al, 2012;Gomes et al, 2012;Pantilat et al, 2012;Tordoff et al, 2012).…”