The relationship between frequency of family dinner and adolescent problem behaviors after adjusting for other family characteristics

Objective: To examine the association between frequency of family dinners (FFD) and selected problem behaviors for adolescents after adjusting for family connectedness, parental awareness, other family activities, and other potentially confounding factors. Methods: Data are drawn from the National Longitudinal Survey of Youth, 1997. The primary variable of interest is self-reported FFD in a typical week. Problem behaviors studied are substance-use, physical violence, property-destruction, stealing, running away from home, and gang membership. Multivariate logistic models are estimated for each behaviors. Linear regression models are estimated for behavior-frequency for the subsamples engaging in them. Analysis is done separately by gender. Results: FFD is negatively associated with substance-use and running away for females; drinking, physical violence, property-destruction, stealing and running away for males. Conclusion: Family meals are negatively associated to certain problem behaviors for adolescents even after controlling rigorously for potentially confounding factors. Thus, programs that promote family meals are beneficial.adolescents; teens; dinner; family; substance-use; violence; delinquency.

Frequency Of Sexual Activity Among Unmarried Adolescent Girls: Do State Policies Pertaining To Abortion Access Matter?

While considerable research exists on whether abortion restrictions affect adolescents’ demand for abortions, less work has been done about whether such restrictions deter pregnancy-risk behavior among adolescents. This paper uses data from the first round of the NLSY97 to investigate the effects of two abortion restrictions -- unavailability of Medicaid funding and laws requiring parental involvement -- on the frequency of sexual activity among (unmarried) adolescent girls. Results from zero-inflated negative binomial models indicate that neither restriction has significant effects on the frequency of sexual activity per se or on the frequency of non-contracepted sexual activity.

Is There An Association Between Gasoline Prices & Physical Activity?Evidence from American Time Use Data.

Obesity is epidemic in the U.S, and there is an imperative need to identify policy tools that may help fight this epidemic. A recent paper in the economics literature finds an inverse relationship between gasoline prices and obesity-risk --- suggesting that increased gasoline prices via higher gasoline taxes may have the effect of reducing obesity prevalence. This study builds upon that paper. It utilizes cross-sectional time-series data from the American Time Use Survey over 2003-2008, utilizes the increases that occurred in gasoline prices in this period due to Hurricane Katrina and to the global spike in gasoline prices as a ‘natural experiment’, and explores how time spent by Americans on different forms of physical activity is associated with gasoline price levels. Economic theory suggests that higher gasoline prices may alter individual behavior both via a ‘substitution effect’ whereby people seek alternatives to motorized transportation, and an ‘income effect’ whereby the effect of higher gasoline prices on the disposable family budget lead people to make various adjustments to what they spend money on. The latter may lead to some increase in physical activity (for example, doing one’s own yard work instead of hiring help), but may also lead to decreases in other physical activities that involve expenses, such as team sports or work-outs at the gym. Thus, ultimately, the relationship between gasoline prices and physical activity must be empirically determined. Results from multivariate regression models with state and time fixed-effects indicate that higher gasoline prices are associated with an overall increase of physical activity that is at least moderately energy intensive. The increases are most pronounced in periods where gasoline prices fluctuate more sharply. These results appear robust to a number of model specifications. One of the major components of this increase appear to be an increase in housework that is at least moderately energy intensive – such as interior and exterior cleaning, garden and yard work, etc. This tentatively suggests that there is an ‘income effect’ of higher gasoline prices. However, the increases in physical activity associated with increased gasoline prices are weaker among minorities and low socioeconomic status (SES) individuals. Hence, while a policy which increases gasoline prices via raised gasoline taxes may have benefits in terms of increasing overall physical activity levels in the U.S., one concern is that these benefits may not accrue to low SES individuals to the same extent as to their higher SES counterparts.Gasoline Prices; Physical Activity; Income Effect; Substitution Effect; Housework

Maternal prenatal substance use and behavior problems among children in the U.S.

Prenatal exposure to smoking and alcohol-use is found to be correlated with various adverse consequences for children, including behavior problems. However, it is not clear whether this relationship is an artifact of underlying confounding factors that impact both the mother’s decision to smoke/drink during pregnancy and subsequent child behavior. We investigate the relationship between prenatal substance use and children’s behavior problems using data from the Children of the National Longitudinal Survey (CNLSY). Specifically, we investigate whether prenatal cigarette use and alcohol-use affect children’s behavior problems when they are 4-6 years old, and when they are 8-10 years old. Fixed-effects regression and propensity score methods are used to minimize bias from confounding factors. Our results suggest that the relationship between prenatal smoking and behavior problems are driven by underlying confounding factors, but prenatal alcohol-use may indeed cause behavior problems in children, though there may still be some bias in the results.Prenatal behaviors; substance use; alcohol; smoking; children; development; behavior problems;

A Preliminary Investigation of The Effects of Restrictions on Medicaid Funding for Abortions on Female STD Rates

There is evidence in the economic literature that restrictions on Medicaid funding for abortion reduces the demand for abortion. The unresolved question is whether such restrictions also increase safe sex (that is, pregnancy avoidance) behavior among women. This study explores that issue using state-level gonorrhea rates among women for 1975-95. The rationale is that sexual behavior that leads to greater risk of accidental pregnancies is likely to be highly correlated with sexual behavior leading to greater risk of STD infection. Since gonorrhea has an incubation period of about a week, and is transmitted almost exclusively through sexual intercourse, a change in sexual behavior should soon be followed by a change in gonorrhea rates. The study used a partial adjustment model with lagged dependent variables estimated using Arellano-Bond’s GMM method. Results fail to find any statistically significant evidence that Medicaid funding restrictions are effective in reducing gonorrhea rates. This finding is robust to a variety of alternate specifications and tests. This suggests that restrictions on Medicaid funding for abortion fail to promote safe sex behavior among women

Is There An Association Between Gasoline Prices & Physical Activity?Evidence from American Time Use Data.

Obesity is epidemic in the U.S, and there is an imperative need to identify policy tools that may help fight this epidemic. A recent paper in the economics literature finds an inverse relationship between gasoline prices and obesity-risk --- suggesting that increased gasoline prices via higher gasoline taxes may have the effect of reducing obesity prevalence. This study builds upon that paper. It utilizes cross-sectional time-series data from the American Time Use Survey over 2003-2008, utilizes the increases that occurred in gasoline prices in this period due to Hurricane Katrina and to the global spike in gasoline prices as a ‘natural experiment’, and explores how time spent by Americans on different forms of physical activity is associated with gasoline price levels. Economic theory suggests that higher gasoline prices may alter individual behavior both via a ‘substitution effect’ whereby people seek alternatives to motorized transportation, and an ‘income effect’ whereby the effect of higher gasoline prices on the disposable family budget lead people to make various adjustments to what they spend money on. The latter may lead to some increase in physical activity (for example, doing one’s own yard work instead of hiring help), but may also lead to decreases in other physical activities that involve expenses, such as team sports or work-outs at the gym. Thus, ultimately, the relationship between gasoline prices and physical activity must be empirically determined. Results from multivariate regression models with state and time fixed-effects indicate that higher gasoline prices are associated with an overall increase of physical activity that is at least moderately energy intensive. The increases are most pronounced in periods where gasoline prices fluctuate more sharply. These results appear robust to a number of model specifications. One of the major components of this increase appear to be an increase in housework that is at least moderately energy intensive – such as interior and exterior cleaning, garden and yard work, etc. This tentatively suggests that there is an ‘income effect’ of higher gasoline prices. However, the increases in physical activity associated with increased gasoline prices are weaker among minorities and low socioeconomic status (SES) individuals. Hence, while a policy which increases gasoline prices via raised gasoline taxes may have benefits in terms of increasing overall physical activity levels in the U.S., one concern is that these benefits may not accrue to low SES individuals to the same extent as to their higher SES counterparts

A Preliminary Investigation of The Effects of Restrictions on Medicaid Funding for Abortions on Female STD Rates

There is evidence in the economic literature that restrictions on Medicaid funding for abortion reduces the demand for abortion. The unresolved question is whether such restrictions also increase safe sex (that is, pregnancy avoidance) behavior among women. This study explores that issue using state-level gonorrhea rates among women for 1975-95. The rationale is that sexual behavior that leads to greater risk of accidental pregnancies is likely to be highly correlated with sexual behavior leading to greater risk of STD infection. Since gonorrhea has an incubation period of about a week, and is transmitted almost exclusively through sexual intercourse, a change in sexual behavior should soon be followed by a change in gonorrhea rates. The study used a partial adjustment model with lagged dependent variables estimated using Arellano-Bond’s GMM method. Results fail to find any statistically significant evidence that Medicaid funding restrictions are effective in reducing gonorrhea rates. This finding is robust to a variety of alternate specifications and tests. This suggests that restrictions on Medicaid funding for abortion fail to promote safe sex behavior among women

Is There An Association Between Gasoline Prices & Physical Activity?Evidence from American Time Use Data.

Obesity is epidemic in the U.S, and there is an imperative need to identify policy tools that may help fight this epidemic. A recent paper in the economics literature finds an inverse relationship between gasoline prices and obesity-risk --- suggesting that increased gasoline prices via higher gasoline taxes may have the effect of reducing obesity prevalence. This study builds upon that paper. It utilizes cross-sectional time-series data from the American Time Use Survey over 2003-2008, utilizes the increases that occurred in gasoline prices in this period due to Hurricane Katrina and to the global spike in gasoline prices as a ‘natural experiment’, and explores how time spent by Americans on different forms of physical activity is associated with gasoline price levels. Economic theory suggests that higher gasoline prices may alter individual behavior both via a ‘substitution effect’ whereby people seek alternatives to motorized transportation, and an ‘income effect’ whereby the effect of higher gasoline prices on the disposable family budget lead people to make various adjustments to what they spend money on. The latter may lead to some increase in physical activity (for example, doing one’s own yard work instead of hiring help), but may also lead to decreases in other physical activities that involve expenses, such as team sports or work-outs at the gym. Thus, ultimately, the relationship between gasoline prices and physical activity must be empirically determined. Results from multivariate regression models with state and time fixed-effects indicate that higher gasoline prices are associated with an overall increase of physical activity that is at least moderately energy intensive. The increases are most pronounced in periods where gasoline prices fluctuate more sharply. These results appear robust to a number of model specifications. One of the major components of this increase appear to be an increase in housework that is at least moderately energy intensive – such as interior and exterior cleaning, garden and yard work, etc. This tentatively suggests that there is an ‘income effect’ of higher gasoline prices. However, the increases in physical activity associated with increased gasoline prices are weaker among minorities and low socioeconomic status (SES) individuals. Hence, while a policy which increases gasoline prices via raised gasoline taxes may have benefits in terms of increasing overall physical activity levels in the U.S., one concern is that these benefits may not accrue to low SES individuals to the same extent as to their higher SES counterparts

Maternal prenatal substance use and behavior problems among children in the U.S.

Prenatal exposure to smoking and alcohol-use is found to be correlated with various adverse consequences for children, including behavior problems. However, it is not clear whether this relationship is an artifact of underlying confounding factors that impact both the mother’s decision to smoke/drink during pregnancy and subsequent child behavior. We investigate the relationship between prenatal substance use and children’s behavior problems using data from the Children of the National Longitudinal Survey (CNLSY). Specifically, we investigate whether prenatal cigarette use and alcohol-use affect children’s behavior problems when they are 4-6 years old, and when they are 8-10 years old. Fixed-effects regression and propensity score methods are used to minimize bias from confounding factors. Our results suggest that the relationship between prenatal smoking and behavior problems are driven by underlying confounding factors, but prenatal alcohol-use may indeed cause behavior problems in children, though there may still be some bias in the results