Self-Care, Health Literacy and Their Associations Amongst Patients with Chronic Kidney Disease (CKD) in Primary Care

AimThe study objective was to determine the levels of self-care (including domains of behaviour, motivation, self-efficacy) and health literacy, and study their associations amongst patients with chronic kidney disease (CKD) in primary care setting in Singapore. MethodA cross-sectional, questionnaire-based study was conducted in one public-sector primary care clinic. Participants aged 21 to 80 years with hypertension were recruited from the clinic CKD register with 5,500 patients. Self-care profile (including behaviour, motivation and self-efficacy) were measured using Hypertension Self-Care Profile (HTN-SCP, range 0-240, domain range 0-80). Health literacy was measured using Short-Form Health Literacy Scale (HLS-SF12, range 0-50, limited literacy [&le;]33). ResultsA total of 347 out of 354 randomly selected patients consented to participate in the study. Two hundred and eighty-nine fully-completed responses were analysed. The mean self-care (HTN-SCP) score was 182.7 (SD 23.2), while mean scores were 55.3 (SD 8.6), 63.3 (SD 8.7), 64.0 (SD 9.3), for behaviour, self-efficacy and motivation domains respectively. The mean health literacy score was 36.1 (SD 7.7), and 31.1% of participants had limited health literacy. Limited health literacy was associated with self-efficacy (OR= -7.2, 95%CI=-9.1 to -5.2, p<0.001), motivation (OR= -6.1, 95%CI=-8.3 to -3.9, p<0.001) and behaviour (OR= -4.5, 95%CI=-6.6 to -2.4, p<0.001). Self-care was not associated with age, CKD status, household income and education but was associated with gender and limited health literacy. In the final regression model only limited health literacy was associated with self-care scores (Adjusted beta -17.4, p<0.001). ConclusionOne-third of the patients with CKD in primary care had limited health literacy. Self-care was not associated with age, gender, CKD status, household income or education. Limited health literacy was associated with self-care, with strongest association with self-efficacy, followed by motivation and behaviour. More targeted approach can be adopted to improve self-care and health literacy amongst patients with CKD.