Research questions and corresponding variables.

For question 1, all interactions were of interest starting with the highest-order statistically significant interaction. For questions 2–5, the highest-order significant interaction was of interest, but only if it contained the injuries variable and the question-unique variable (in italics).针对问题1，所有交互作用均纳入研究分析范畴，且需从最高阶统计显著交互作用（statistically significant interaction）开始筛选。针对问题2至问题5，仅当最高阶显著交互作用同时包含损伤变量（injuries variable）与以斜体标注的问题专属变量（question-unique variable）时，该交互作用方可纳入研究分析范畴。