| 来源类型 | Working Paper |
| 规范类型 | 报告 |
| DOI | 10.3386/w26670 |
| 来源ID | Working Paper 26670 |
| Time Spent Exercising and Obesity: An Application of Lewbel\u2019s Instrumental Variables Method | |
| Charles J. Courtemanche; Joshua C. Pinkston; Jay Stewart | |
| 发表日期 | 2020-01-20 |
| 出版年 | 2020 |
| 语种 | 英语 |
| 摘要 | This paper examines the role physical activity plays in determining body mass using data from the American Time Use Survey. Our work is the first to address the measurement error that arises when time use during a single day—rather than average daily time use over an extended period—is used as an explanatory variable. We show that failing to account for day-to-day variation in activities results in the effects of time use on a typical day being understated. Furthermore, we account for the possibility that physical activity and body mass are jointly determined by implementing Lewbel’s instrumental variables estimator that exploits first-stage heteroskedasticity rather than traditional exclusion restrictions. Our results suggest that, on average, physical activity reduces body mass by less than would be predicted by simple calorie expenditure-to-weight formulas, implying compensatory behavior such as increased caloric intake. |
| 主题 | Econometrics ; Estimation Methods ; Health, Education, and Welfare ; Health |
| URL | https://www.nber.org/papers/w26670 |
| 来源智库 | National Bureau of Economic Research (United States) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/584344 |
| 推荐引用方式 GB/T 7714 | Charles J. Courtemanche,Joshua C. Pinkston,Jay Stewart. Time Spent Exercising and Obesity: An Application of Lewbel\u2019s Instrumental Variables Method. 2020. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| w26670.pdf（400KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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