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Background: It is unknown whether insurancestatus influences care provided and patients'prognosis, in China.Methods: This retrospective cohort studyincluded medical records of 4,714 patients withacute myocardial infarction aged 20 and older,discharged consecutively from 14 Chinese hospitalsbetween January 2000 and February 2003.Uni-variate analysis, multivariate logistic regressionand linear regression were used to compare differencesin patients' characteristics, care providedand prognosis between insured patients and theuninsured.Results: The uninsured were more likely to beolder, female, have transfer admissions, and lesslikely to be hospitalized to institutions with cardiacinterventional facilities, intensive care units orcoronary care units. The uninsured were also lesslikely to undergo diagnostic procedures, interventionsand to receive medications, and stayedshorter in hospital and consumed less health careresources. In-hospital mortality in the uninsured,the non-government insured and the governmentinsured was 10.5%, 12.2% and 8.4% respectively.After adjusting for potential confounders, oddratio in hospital mortality was 1.079 (95% CI,0.836–1.392) and 0.763 (95% CI, 0.559–1.041) for thenon-government insured and the governmentinsured, compared to the uninsured. At significantlevel of 0.05, we could not assert insurance statusis a significant factor to in-hospital mortality.

Urban green spaces facilitate children's physical activities by providing opportunities for engagement with natural settings. However, there is a lack of empirical research examining the nexus between the greenery features and spatial quality in urban parks and park-based physical activities among children. Moreover, the influence of children's perceptions of their environment has been overlooked. Through the application of remote sensing and field surveys, we evaluated the greening and quality of 34 play spaces within 20 urban parks, employing on-site measurements and unmanned aerial vehicle observations to identify and quantify the intensity and density of children's physical activities. Utilizing Hierarchical Linear Modeling and Simple Mediating Modeling, we investigated the mediating effects of green spaces on physical activity and perceived environmental qualities. Our findings indicate a curvilinear (inverted U-shaped) relationship between urban park greening metrics, such as vegetation diversity and green view index, and the dosage of children's physical activity. The interplay between the quality of space and greening level in shaping physical activity demonstrates complex dynamics of synergy and competition. The greening level of play spaces positively impacts the intensity and density of children's physical activities and is partly moderated by perceived environmental factors, notably safety and attractiveness. These insights contribute empirical evidence and decision-making guidance for urban greening and the development of child-friendly urban spaces.