Since the study was about exploring citizens' sense of cleanliness and it association with sustainable solid waste management practices in their immediate locality, the respondents were classified into two groups. This was to avoid bias in the responses. For example, responses tend to be biased towards the positive when one must evaluate one's own work. The first group of respondents (Group 1) was selected randomly among all eligible households in the study area, excluding those households actively engaged in sustainable solid waste management practices, hereafter referred to as sustainable solid waste management households. The exclusion of SSWM households was to avoid this bias