The evaluation of functional status

The ECOG-PS is the most generally used clinically reported functional status score in oncology practice (17). Clinicians prefer one statement suitably defining the patient’s level of physical activity (ranging from 0 to 4). The scores were defined as 0 being fully active, 1 being restricted in strenuous activity, and 2 indicating being capable of all self-care but an inability to carry out any work activities, up and about more than 50% of waking hours. Scores of 3 and above indicate severe disability. Patients with ECOG-PS ≥3 have a poor prognosis and were excluded from our study.