Study instrument
A paper-based self-administered and interviewer-administered questionnaire was used to collect data from study participants. The data collection tool was developed through an extensive review of the literature. The questionnaire was initially developed in English, was translated to Amharic language and back to English to ensure that the 88 final version gave the intended meaning. Amharic version of the questionnaire was used for collecting data. The survey instrument was further pretested on 25 Addis Ababa residents who were not included in the final analysis, and slight modifications were instituted in the definitive data collection tool. The final questionnaire has six parts, section one assessed socio-demographic information of the study participants; section two aimed to explore participant’s general knowledge regarding CKD; section three and four focused on examining respondents’ acquaintance with essential kidney functions and joint laboratory investigations used to measure kidney health, respectively; section five included questions to investigate the respondent’s knowledge of risk factors of CKD, whereas section six aimed to assess the sign and symptoms of advanced CKD. The survey questions on Kidney and CKD’s knowledge were categorized into three responses (True, False, and I do not know).