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Validity and reliability test of the knowledge level questionnaire of cancer patients undergoing radiotherapy Hanum, Fathiya Juwita; Machmud, Rizanda; Gondhowiardjo, Soehartati; Khambri, Daan; Harahap, Wirsma Arif; Elliyanti, Aisyah; Firdawati, Firdawati; Semiarty, Rima
Media Penelitian dan Pengembangan Kesehatan Vol. 36 No. 1 (2026): MEDIA PENELITIAN DAN PENGEMBANGAN KESEHATAN
Publisher : Poltekkes Kemenkes Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34011/jmp2k.v36i1.3604

Abstract

Background: Radiotherapy is one of the main modalities in cancer treatment. The success of this therapy is strongly influenced by the knowledge of patients about the disease and radiotherapy. The researcher developed a questionnaire to measure the level of knowledge among cancer patients undergoing radiotherapy. Objective: This study aimed to assess the validity and reliability of a knowledge-level questionnaire for cancer patients receiving radiotherapy at Dr. M. Djamil General Hospital, Padang. Methods: This research employed a quantitative approach with a cross-sectional design. A total of 30 cancer patients undergoing radiotherapy were included as respondents using a consecutive sampling technique. The questionnaire instrument was developed by the researcher and consisted of 25 items covering five domains of knowledge: cancer, radiotherapy, side effects, self-care, and nutrition. Results: Validity testing was conducted using Pearson’s correlation analysis, while reliability was assessed using Cronbach’s Alpha. Out of the 25 items, 19 were statistically valid (p<0.05), with correlation coefficients (r) ranging from moderate to strong (0.470–0.745). The Cronbach’s Alpha value for the valid items was 0.904, indicating excellent reliability. Conclusion: The developed questionnaire was proven to be both valid and reliable for measuring the knowledge level of cancer patients undergoing radiotherapy. This instrument has the potential to be used in clinical practice and research to support more targeted educational interventions.
Co-Authors ., Azamris ., Oktahermoniza Abdul Hafiz, Muhammad Zaki Afrinita Eka Fitri Afriwardi Afriwardi Agus Susanta Ahmad Fakhrozi Helmi Aisha Rahmatya Aisyah Elliyanti Anandia Putriyuni Anandia Putriyuni Anggraini, Dessy Ari Oktavenra Ari Yanto Wijaya Arifin, Hidayat Arni Amir Asterina Aswiyanti Asri Azamris Azamris Aziza, Zulva Berna Elya Bobby Indra Utama Citra Ayu Fitrisia Deddi Prima Deddi Prima Putra Dedi Prima Putra Defri Heryadi Dessy Arisanty Dia Rofinda, Zelly Dia Edison Edison Eka Putri Eka Putri Elfira Yusri Erlina Rustam Ermawati Ermawati Ermawati Ermawati Eti Yerizel Fadrian, Fadrian Fatma Sri Wahyuni Fillia Putri Firdawati, Firdawati Frengki Frengki Frengki Frengki, Frengki Hafiz, Muhammad Zaki Abdul Hafni Bachtiar Hanum, Fathiya Juwita Hasmiwati Henni Vanda Henni Vanda Henni Vanda Henni Vanda henny Mulyani Henny Mulyani Henny Vanda Hera Novianti Heryadi, Defri Hidayat, Nur Latifah Alfaina Husna Yetti Intan, Shinta Ayu Isra Analdo Arza Jamil, Mohd Jamilah Abbas Krisdianto, Boby Febri Leni Merdawati M. Al Farisyi Made Satya Nugraha Gautama Maisa, Esthika Ariany Muhammad Reno Akhyar Marpaung Muhammad Zaki Abdul Hafiz Niki Astria Nina Kurniasih Nindita, Priska Audina Nirmala Sari Noni Zakiah Nora, Sondang Noza Hilbertina Noza Hilbertina, Noza Nurhayati Nurhayati Oktahermoniza Oktahermoniza . Oktavenra, Ari Pamelia Mayorita Prima Astuti Handayani Putra, Fachri Putri, Biomechy Oktomalio Putriyuni, Anandia Raden Mohamad Herdian Bhakti Ramadanus Ramadanus Ramadanus Rifa, Farras Zahra Rima Semiarty Rini Purnama Sari Rizanda Machmud Rony Rustam Rony Rustam Rony Rustam Rony Rustam Rony Rustam Rosfita Rasyid Rulli Firmansyah Rustam, Rony Safnita, Dewi Selfi Renita Rusdji Selfi Renita Rusjdi Septiyeni, Elsa Soehartati Gondhowiardjo Sofia Mubarika Sofia Mubarika Haryana Sonar Soni Panigoro Sondang Nora Sondang Nora Sondang Nora Harahap Sorayya A'dilah Putri Suchitra, Avit Suyuthie, Heldrian Dwinanda Syamel Muhammad Tofrizal tofrizal - tofrizal Vashti Resti Putri Firdaus Veithzal Rivai Zainal Vivi Sofia Vivi Sofia Vivi Sofia wessi windrasari Wirsma Arif Harahap Wirsma Arif Harahap Yanwirasti - Yanwirasti - Yenita . Yenita Afriyeni Yopiq Triputra Yusticia Katar Yusticia Katar, Yusticia