Nurse-led supportive care was given to family caregivers of patients with lung cancer.

The control group received only usual care. They did not receive any intervention during the study period.

Nurse-led supportive care programme was applied to family caregivers for eight weeks in the form of face-to-face clinic interviews. It took an average of 40 minutes to interview with family caregivers at the clinic.

The ZBI is a measure of caregiving burden developed by Zarit et al. (1980). The Turkish version of this scale has been validated by Inci and Erdem (2018). It consists of 22 items, and responses are recorded on a five-point Likert scale. The level of caregiver burden can be ascertained based on the total scale scores, which range from 0 to 88. Higher scores indicate a higher level of caregiver burden.The Cronbach's α of the Turkish version of this scale was 0.91 in Inci and Erdem (2018) validation study.

The CDRSSF was developed to determine the psychological resilience of individuals, which enables them to return to their former state after negative events they have experienced.It is a 5-point Likert-type scale with 10 items.The level of resilience can be ascertained based on the total scale scores, which range from 0 to 40. High scores obtained from the scale are considered as high psychological resilience. The Turkish validity and reliability of the scale was conducted by Kaya and Odacı (2020).