Uji reliabilitas instrumen kualitas hidup pada penderita kanker payudara di RSUP DR. Sardjito Yogyakarta

DJUMINTEN, dr. Siswanto Agus Wilopo, SU., M.Sc, ScD

2010 | Tesis | S2 IKM-Kesehatan Ibu dan Anak-Kesehatan Reproduksi

Latar Belakang: Kanker payudara mempengaruhi kualitas hidup penderita. Pengukuran kualitas hidup penting untuk evaluasi keberhasilan pelayanan kesehatan dan kelangsungan hidup penderita. The Quality of Life Instrument (Quality of Life Breast Cancer Scale) dari Ferrell, et al (1995) yang diterjemahkan ke dalam bahasa Indonesia menjadi instrumen kualitas hidup penderita kanker payudara, belum diuji reliabilitasnya. Tujuan: Penelitian ini bertujuan untuk mengetahui reliabilitas instrumen dan tingkat kesepakatan penilaian kualitas hidup penderita kanker payudara antara 2 pemeriksa. Metodologi: Jenis penelitian observasional dengan rancangan cross sectional. Subjek penelitian adalah wanita penderita kanker payudara stadium II-III di RSUP Dr Sardjito. Besar sampel 50 yang diambil dengan teknik aksidental sampling. Data penelitian dikumpulkan melalui wawancara dengan pedoman Instrumen Kualitas Hidup Penderita Kanker Payudara. Setiap subjek penelitian diwawancarai 2 kali oleh perawat dan bidan dengan tenggang waktu 2-14 hari. Analisis data dengan analisis univariabel, dan bivariabel dengan koefisien Kappa, korelasi intrakelas, dan koefisien alfa Cronbanch. Hasil: Uji statistik kappa terhadap 46 item pertanyaan kualitas hidup yang dilakukan oleh perawat dan bidan menunjukkan adanya kesepakatan yang baik dan sangat baik. Hasil uji kappa terendah sebesar k=0,63 dan tertinggi sebesar k=1,00. Hasil uji alfa Cronbach terendah sebesar r=0,63/0,63, dan tertinggi sebesar r=0,88/0,87. Hasil uji koefisien intrakelas terendah r=0,93 dan tertinggi r=0,99. Kesimpulan: Instrumen kualitas hidup penderita kanker payudara dapat diadaptasi untuk penderita kanker payudara di Indonesia.

Background: Breast cancer can influence the quality of patient’s life. A measurement of quality of life (QOL) is important to evaluate the health services and the continuity of patient life. The Quality of Life Instrument (Quality of Life Breast Cancer Scale) by Ferrell, et al (1995) which has been translated into Indonesian as The Quality of Life Breast Cancer Instrument has not been tested its reliability. Objective: To know the instrument’s reliability and measuring agreement rating of breast cancer patient’s life quality between two raters. Methodology: This was an observational study using a cross-sectional study design. The subjects were 50 women with stage II-III of breast cancer at Sardjito Hospital selected using an accidental sampling technique. Data was collected through interviews using the QOL instrument guideline. Each subject was interviewed twice by nurse and midwife with 2-14 days difference between the interviews. The data were analyzed with Univariate, and Bivariate with Coefficient Kappa analysis, Intraclass Coefficient Correlation analysis, and alfa Cronbach Coefficient analysis. Results: The Kappa analysis to 46 items of quality of life questions done by nurse and midwife resulted in “good” and “very good” category. The lowest result was k=0.63 and the highest result was k=1.00. The lowest result of coefficient alpha analysis was r=0.63/0.63 while the highest was r=0.88/0.87. The lowest intraclass coefficient was r=0.93 while the highest was r=0.99. Conclusion: The quality of life breast cancer instrument could likely be adapted for breast cancer patients in Indonesia.

Kata Kunci : Reliabilitas,Instrumen,Kualitas hidup,Kanker payudara,Sardjito, reliability, instrument, quality of life, breast cancer