The experimental group will receive the Nursing intervention to reduce uncertainty in illness and increase quality of life in family caregivers of patients with cancer in palliative care

The control group will receive the nursing care conventionally given in the health care institution

The intervention was built on the components of the theory of uncertainty in illness and was designed to give in a face to face meeting with the caregiver education about advanced cancer in palliative care through an educational material.

Educational material: The educational booklet has the purpose of giving information to the family caregiver about palliative care. This material aims to be an easily accessible resource to understand the palliative care of the cancer patient. In addition, this booklet will be used to ensure the standardization of the intervention during the face-to-face meeting with the participants and the investigator.

Face-to-face meeting: The nursing intervention has a face-to-face meeting component between the investigator and the participant. This nursing educational session will be supported by the contents of the booklet and will have the purpose of discussing the contents of the booklet and resolving doubts on the part of the family caregivers.

this variable is defined as the proportion of eligible participants who agree to participate in the study, within the total of eligible participants. This variable will be measured with the Participant Recruitment Format.

This variable is defined as the proportion of participants who entered the study and remained in the study until the post-intervention measurement within the total number of participants in the study. This variable will be measured with the Participation and Follow-up Format of the Participant.

Refers to the perception that participants have of the intervention to address the problem presented in terms of being reasonable, adequate and convenient for its application in daily life and to meet their expectations. This variable will be measured with the Participant Satisfaction Questionnaire.

It is a cognitive state that is created when the individual can not adequately structure or categorize an event related to the disease due to insufficient signals to do so.

the investigators will use the MISHEL UNCERTAINTY IN ILLNESS SCALE - FAMILY MEMBER FORM develop by Merle Mishel RN, PhD. This scale has 31 items with response options from 1 to 5, ranging from strongly disagree to strongly agree. This instrument in its original version has a structure of two factors. The first, Ambiguity with 19 items. The second, Complexity with 12. For populations with cancer the scale reports an alpha coefficient of between 0.77 to 0.91. The scale has a score of 31 to 150 points where the higher the score, the higher the level of uncertainty. The scale has evidence of transcultural adaptation and validity for the Colombian context.