Radioprotection No 59-2 | Page 12

L . Canet et al .: Radioprotection 2024 , 59 ( 2 ), 69 – 79 71

Table 1 . Guidelines analyzed . Organization Title Reference Phase considered

* Denmark , Norway , Sweden , Finland and Iceland .

preliminary research involved analyzing word frequencies , identifying co-occurring words , and conducting hierarchical cluster analysis . Nouns and adjectives occurring ten times or more were considered .

Correspondence and co-occurrence analyses using KhCoder software were performed on the subthemes in association with each guideline and with the topic of the guidelines . The topic of the guidelines represents the phases of nuclear incident management mentioned in the guidelines . The document analyzed belong to 4 different categories ‘ all phases & rsquo ‘ early and transition phase & rsquo ‘ transition and recovery ’ and ‘ recovery phase ’.

Correspondence analysis is a statistical method that explores and visualizes the relationships between two sets of categorical data in a two-dimensional plane . It helps visualize relationships between themes and subthemes that exhibit similar patterns , determining if they are characteristic of the analyzed guidelines .

Co-occurrence network analysis serves as a tool for visually representing the potential connections among concepts and facilitating a deeper understanding of their interrelationships . These networks offer insights into the underlying structures and interaction networks within the radiological protection guidelines by connecting pairs of concepts to the most frequent word occurrences within each theme . Consequently , the network diagrams depict the associations between the guidelines and previously established themes and subthemes . In these diagrams , the node size represents word frequency , line thickness indicates the strength of connections , and node color reflects the degree of association .