Valid units are those surveys where the respondent filled out at least one question. Only valid units are included by default in all analyses. Other units - invalid for analysis of content - include empty surveys (for example, when somebody only clicked on the introduction) and are mainly only of interest in the context of analysis of response process. Their summary review is in the DASHBOARD tab. <span class="qtip-more"><a href = "https://www.1ka.si/d/en/help/manuals/status-of-units-relevance-validity-and-missing-values" target="_blank">Read more</a></span>