The study includes individuals who provide care for pediatric oncology patients. The research will involve primary caregivers aged 18 years or older who provide care for a child diagnosed with cancer and who are currently hospitalized in the Pediatric Hematology and Oncology Unit of Başakşehir Çam and Sakura City Hospital. The study will examine caregivers' sociodemographic characteristics, quality of life, and caregiving burden levels.

This intervention consists of assessing the quality of life and caregiving burden of primary caregivers of children diagnosed with cancer using standardized questionnaires and scales. It does not involve any medical procedures, treatments, or experimental applications. The intervention includes only the administration of data collection tools to caregivers and is therefore distinct from treatment-based interventions used in other clinical studies.

The scale consists of 25 items and four subscales: burden (10 items: 9, 11, 14, 15, 18, 19, 20, 21, 25, 31), disruptiveness (6 items: 1, 2, 3, 5, 13, 29), positive adaptation (6 items: 17, 24, 26, 30, 32, 33), and financial distress (3 items: 6, 7, 8). The scale is rated on a Likert-type scale ranging from 0 (almost never), 1 (not much), 2 (somewhat), 3 (quite a bit), to 4 (very much).

Subscale scores of the CQOLC are calculated by summing the items within each subscale. The total CQOLC score is obtained by summing all 25 items. The total CQOLC score ranges from 0 to 100, with higher scores indicating lower quality of life. The overall internal consistency coefficient of the scale is .88, while the Cronbach's alpha values for the subscales of burden, disruptiveness, positive adaptation, and financial distress are reported as .83, .79, .73, and .77, respectively.

The scale consists of 36 items rated on a 5-point Likert scale and includes four subscales. The emotional burden subscale comprises 12 items, the sociocultural and economic burden subscale comprises 11 items, the mental burden subscale comprises 7 items, and the physical burden subscale comprises 6 items. Participants completing the scale indicate their level of agreement with statements related to the caregiving burden experienced during the process of caring for their child using the following response options: "1 = Never, 2 = Rarely, 3 = Sometimes, 4 = Often, 5 = Always." The minimum possible total score is 36 (36 items × 1 point), and the maximum possible total score is 180 (36 items × 5 points). The caregiver burden level is determined by summing the responses to all items. Accordingly, mean score ranges are interpreted as follows: mean scores of 1.00-2.00 indicate "no or low burden," 2.00-3.00 indicate "mild to moderate burden," 3.00-4.00-5.00 indicate "