A qualitative study on the effect of a decision aid on knowledge of cataractsurgery in patients in developing countries.

Abstract

Despite cataract surgery being a safe procedure with a low incidence of perioperative complications rates, poor knowledge, concerns about the effectiveness of treatment and cost-benefit analysis of the procedure significantly hinder cataract surgery uptake rates in Africa. This study describes the effect of a decision aid on knowledge and decision conflict on cataract patients in Africa. 120 patients with cataracts reporting to a tertiary hospital in Ghana were randomly assigned to receive a decision aid containing information on the possible outcomes of cataract surgery or a control booklet containing general knowledge about cataracts without information about cataract surgery. The primary outcome measured was the effect of the decision aid on their knowledge of cataract surgery. A score greater than 6/12 (50%) was deemed adequate knowledge. The secondary outcome was the decision conflict experienced by the participants assessed using the Decision Conflict Scale. Compared to the control group, the participants in the intervention group scored higher marks across all sections of the questionnaire (2.92 vs 2.7, p = 0.042 in section"Background"; 2.62 vs 1.77, p < 0.001 in section"Materials"; 1.87 vs 1.55, p = 0.03 in section"Results"). The average total score was higher in the intervention group than in the control (36.7% difference; p < 0.001). Participants in the intervention group also demonstrated lower decision conflict scores than those in the control group (13.00 vs 37.17; p < 0.001). The decision aid increased knowledge of cataract surgery and reduced decision conflict among patients in a developing country.