Drug therapy problems and health related quality of life among patients with colorectal cancer in a Kenyan tertiary health facility

Background Colorectal cancer is the third most common form of cancer in males and the second in females globally. The ill-health due to cancer and use of multiple therapies may result in drug related problems and also affect the health-related quality of life of the patients. Objective To characterize drug therapy problems and health-related quality of life among patients with colorectal cancer at Kenyatta National Hospital. Methodology: A descriptive prospective cross-sectional study design was used and simple random sampling utilized to select seventy- one participants. The participants were interviewed and their responses captured using World Health Organisation Quality of Life-BREF and a structured questionnaire. The data were analysed using STATA version 15.0. Data was summarized using descriptive statistic such as mean, range and standard deviation. Association between variables was determined using linear regression model at 0.05% level of significance. Ethical approval was granted by the relevant authorities to conduct the study. Results Patients were predominantly females (52.1%), had a mean age of 55.9± 14.4 years. The main drug therapy problems were adverse drug reactions (45.1%). Approximately two thirds (67.6%) of the participants complained of gastrointestinal problems followed by cardiovascular diseases (29.6%). Quality of life assessment indicated that psychological health had the highest score at 60.5%. On linear regression analysis, the presence of anemia (p = 0.021), coverage (p = 0.038), and cardiovascular problems (p = 0.034) were significantly associated with the overall health-related quality of life. Conclusion The health-related quality of life was is dependent on several patient related factors. Interventions regarding prevention of drug therapy problems should be considered alongside other measures used to manage colorectal cancer.