Table 1.

Data collection and variables.

Data Collected	Variable(s)
Demographic information	Age Gender
Anthropometric data	Weight Height BMI
Clinical data	Type of primary tumor Surgical resection Metastases Bone metastases Cancer stage Line of chemotherapy (first or subsequent lines) ECOG-PS Radiotherapy treatment
Biochemical parameters	Serum albumin ^ ESR Leukocytes/neutrophils ratio
Nutritional support prescription	Enteral/parenteral nutrition
Pain information	Type of background pain BTcP features *
Analgesic therapy	Type and dosage of opioids for background pain and BTcP
HRAs	Number

Abbreviations: BMI, body mass index; ECOG-PS, Eastern Cooperative Oncology Group performance status; ESR, erythrocyte sedimentation rate; BTcP, breakthrough cancer pain; HRA, hospital readmission. ^ cut-off 3.5 g/dL. * Predictable or not; number of weekly episodes; intensity; type; and site.