The effects of subjective socioeconomic status and its underestimation on physical activity: evidence from China

Engineering notes

Key topics: autonomous driving, perception. See the paper for implementation details and experimental results.

Chinese explanation / 中文解读

中文解读待补充：本站会优先为端到端自动驾驶、BEV感知、3D目标检测、轨迹预测、路径规划、LiDAR感知等高价值论文补充中文说明。

Original abstract

Background Improving levels of physical activity (PA) benefits health and well-being and contribute to attainment of global non-communicable diseases targets and a number of the sustainable development goals. While objective socioeconomic status (OSS) is recognized as a significant factor influencing PA, research on subjective socioeconomic status (SSS) remains limited, particularly regarding the impact of the discrepancy between SSS and OSS (subjective status underestimation, SSU). Consequently, this study investigates the relationship between SSS, SSU and PA in China. Methods Using data from 42,442 respondents across five waves of the Chinese General Social Survey (CGSS), we assessed how SSS and SSU are associated with PA and the underlying behavioral and cognitive mechanisms driving this relationship while exploring variations in these effects across age groups. Results The findings indicate that SSS was positively associated with PA, whereas SSU showed a negative association with PA. Although the association of SSS was weaker than that of OSS, SSU still diminished the positive relationship of OSS improvement on PA. For behavioral mechanisms, higher SSS and lower SSU were associated with more leisure frequency, and higher SSS further reduced overtime work. Although higher SSU increased part-time work, this indirect effect was not significant. For cognitive mechanisms, SSU inhibits PA by reducing social trust and perceived fairness and by increasing perceived hostility, whereas SSS promotes PA only through reducing perceived hostility. Additionally, the heterogeneity analysis results indicates that while SSS positively correlated with PA across all cohorts, its effect was comparatively stronger among younger adults (ages 18–35). Conversely, SSU was negatively associated with PA in younger groups but exhibited a positive association among older adults. Conclusion This study demonstrates how SSS and SSU are associated with PA, highlighting the critical role of subjective perceptions. Enhancing population PA requires interventions targeting both objective conditions and subjective cognitive mechanisms.

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