Visual displays, such as icon arrays and risk ladders, are often used to communicate numerical health information. Number lines improve reasoning with rational numbers but are seldom used in health contexts. College students solved ratio problems related to COVID-19 (e.g., number of deaths and number of cases) in one of four randomly assigned conditions: icon arrays, risk ladders, number lines, or no accompanying visual display. As predicted, number lines facilitated performance on these problems-the number line condition outperformed the other visual display conditions, which did not perform any better than the no visual display condition. In addition, higher performance on the health-related ratio problems was associated with higher COVID-19 worry for oneself and others, higher perceptions of COVID-19 severity, and higher endorsement of intentions to engage in preventive health behaviors, even when controlling for baseline math skills. These findings have important implications for effectively presenting health statistics. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

中文翻译：

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与风险阶梯和图标阵列相比，数轴可以更有效地促进成年人在健康相关比率问题上的表现。

视觉显示，例如图标阵列和风险阶梯，通常用于传达数字健康信息。数轴可以提高有理数的推理能力，但很少在健康领域使用。大学生在四种随机分配的条件之一下解决了与 COVID-19 相关的比率问题（例如，死亡人数和病例数）：图标阵列、风险阶梯、数字线或无伴随的视觉显示。正如预测的那样，数轴促进了这些问题的性能——数轴条件优于其他视觉显示条件，而其他视觉显示条件的表现并不比无视觉显示条件更好。此外，即使在控制基线的情况下，在健康相关比率问题上的较高表现也与对自己和他人的 COVID-19 担忧较高、对 COVID-19 严重性的较高认知以及对参与预防性健康行为的意图的较高认可相关。数学技能。这些发现对于有效呈现健康统计数据具有重要意义。（PsycInfo 数据库记录 (c) 2023 APA，保留所有权利）。