Brian E. Roe

The effect of work status on initiation and duration of breast-feeding.

OBJECTIVES In this study, longitudinal data are used to examine the effect of work status on breast-feeding initiation and duration. METHODS Mothers from a mail panel completed questionnaires during late pregnancy and 10 times in the infants first year. Mothers work status was categorized for initiation by hours she expected, before delivery, to work and for duration by hours she worked at month 3. Covariates were demographics; parity; medical, delivery, and hospital experiences; social support; embarrassment; and health promotion. RESULTS Expecting to work part-time neither decreased nor increased the probability of breast-feeding relative to expecting not to work (odds ratios [ORs] = .83 and .89, P > .50), but expecting to work full-time decreased the probability of breast-feeding (OR = .47, P < .01). Working full-time at 3 months postpartum decreased breast-feeding duration by an average of 8.6 weeks (P < .001) relative to not working, but part-time work of 4 or fewer hours per day did not affect duration, and part-time work of more than 4 hours per day decreased duration less than full-time work. CONCLUSION Part-time work is an effective strategy to help mothers combine breast-feeding and employment.

Is there competition between breast-feeding and maternal employment?

Theory suggests that the decision to return to employment after childbirth and the decision to breast-feed may be jointly determined. We estimate models of simultaneous equations for two different aspects of the relationship between maternal employment and breast-feeding using 1993-1994 data from the U.S. Food and Drug Administration’s Infant Feeding Practices Study. We first explore the simultaneous duration of breast-feeding and work leave following childbirth. We find that the duration of leave from work significantly affects the duration of breast-feeding, but the effect of breast-feeding on work leave is insignificant. We also estimate models of the daily hours of work and breast-feedings at infant ages 3 months and 6 months postpartum. At both times, the intensity of work effort significantly affects the intensity of breast-feeding, but the reverse is generally not found. Competition clearly exists between work and breast-feeding for many women in our sample.

A Comparison of Conjoint Analysis Response Formats

A split-sample design is used to evaluate the convergent validity of three response formats used in conjoint analysis experiments. We investigate whether recoding rating data to rankings and choose-one formats, and recoding ranking data to choose one, result in structural models and welfare estimates that are statistically indistinguishable from estimates based on ranking or choose-one questions. Our results indicate that convergent validity of ratings, ranks, and choose one is not established. In addition, we find that people frequently use ‘ties’ in responses to rating questions, and that the option not to choose any of the alternatives (‘opt-out’) affects some preference estimates. Copyright 2001, Oxford University Press.

THE ECONOMICS OF LABELING: AN OVERVIEW OF ISSUES FOR HEALTH AND ENVIRONMENTAL DISCLOSURE

During the last two decades, product labeling has become an increasingly used policy tool, particularly with respect to the provision of health and environmental information. Theory holds that the flow of information among market participants plays a critical role in the efficient operation of markets. This paper explores the role of product labeling policy in ameliorating two potential market deficiencies: asymmetric information and costly search behavior. Practical considerations for the design and implementation of labeling policy and of labeling research are explored.

Success of Strategies for Combining Employment and Breastfeeding

OBJECTIVE. Return to work is associated with diminished breastfeeding intensity and duration. Although more mothers breastfeed after returning to work now than earlier, research has not documented the strategies that mothers use for combining paid work and breastfeeding or their effect on breastfeeding outcomes. This study examined which strategies are associated with smaller decrements in breastfeeding intensity and longer durations. PARTICIPANTS AND METHODS. We analyzed 810 mothers from the Infant Feeding Practices Study II who worked and breastfed. We used regression and censored regression models to analyze 4 strategies that mothers used to combine these 2 activities: (1) feed directly from the breast only; (2) both pump and feed directly; (3) pump only; and (4) neither pump nor breastfeed during the work day. Outcomes were the difference in percentage of milk feeds that were breast milk between the month before and after return to work and duration of breastfeeding after return to work. RESULTS. Forty-three percent of mothers pumped milk at work only; 32% fed the infant directly from the breast only. These 2 strategies, along with pumping and feeding directly, were statistically similar and superior to neither pumping nor breastfeeding during the work day for the outcome of change in breastfeeding intensity. For the outcome of breastfeeding duration, the 2 strategies that included directly feeding from the breast were associated with longer duration than pumping only, whereas the strategy of neither pumping nor breastfeeding during the work day was associated with the shortest duration. CONCLUSIONS. Feeding the infant from the breast during the work day is the most effective strategy for combining breastfeeding and work. Ways to enable direct feeding include on-site child care, telecommuting, keeping the infant at work, allowing the mother to leave work to go to the infant, and having the infant brought to the work site. Establishing ways for mothers to feed from the breast after return to work is important to meet US breastfeeding goals.

The Effects of Farmland, Farmland Preservation, and Other Neighborhood Amenities on Housing Values and Residential Growth

Using data from a conjoint instrument, we estimate compensating variation for the presence of neighboring land that is dedicated to agricultural use (versus developed uses), the preservation of surrounding farmland as permanent cropland, and key neighborhood characteristics such as neighborhood parks, commute times, school quality, and safety. We find that rural-urban fringe areas that are located within commuting distance of urban areas and that have an abundance of farmland could attract residential development. Typical preservation efforts, featuring small parcels of preserved farmland, would induce further residential growth only for areas with short commutes and small amounts of remaining farmland. (JEL R14, Q15)

Consumer Preference for Neotraditional Neighborhood Characteristics

Abstract Much research on residential mobility relies on examining peoples choices within the context of what is available in a local housing market. However, it is difficult to determine the demand for alternative housing or neighborhood types that may not be available or are available only in limited quantities. Hence, the market may not accurately reveal consumer preferences for such alternatives. We estimate a discrete choice model of neighborhood choice by using data from a choice‐based conjoint analysis survey that allows us to vary characteristics experimentally. The model is used to determine consumer preferences for neotraditional neighborhood design features, including neighborhood layout, housing density, surrounding open space, and commuting time, while holding other characteristics, including school quality and neighborhood safety, constant. The results indicate that the neotraditional design with higher density is less preferred on average, but that niche marketing, additional open space, or other amenities can overcome its negative effects.

The differential effects of full-time and part-time work status on breastfeeding

OBJECTIVES Return to work is associated with diminished breastfeeding. Although more mothers breastfeed after returning to work compared to a decade ago, research has not documented the variations in breastfeeding initiation and duration based on full-time and part-time (less than 35h/week) work status. In this study, we clarify these differences. METHODS Longitudinal data from the Infant Feeding Practices Study II, collected between 2005 and 2007, for over 1400 mothers are used. In analyzing initiation, mothers work status was categorized by the expected number of hours she planned to work postpartum. In the duration model, work status was categorized based on the actual number of hours worked upon mothers return to employment after controlling for babys age when she returned to work. Covariates in logistic and censored regressions included demographics, maternity leave, parity, past breastfeeding experience, hospital experience, and social support. RESULTS Compared with expecting not to work, expecting to work <35h/week was not associated with breastfeeding initiation while expecting to work full-time decreased breastfeeding initiation. Compared with breastfeeding mothers who did not work, returning to work within 12 weeks regardless of work status and returning to work after 12 weeks while working more than 34h/week were associated with significantly shorter breastfeeding duration. CONCLUSION Part-time work and increased amount of leave taken promote breastfeeding initiation and duration.

Job Loss, Retirement and the Mental Health of Older Americans

BACKGROUND Millions of older individuals cope with physical limitations, cognitive changes, and various losses such as bereavement that are commonly associated with aging. Given increased vulnerability to various health problems during aging, work displacement might exacerbate these due to additional distress and to possible changes in medical coverage. Older Americans are of increasing interest to researchers and policymakers due to the sheer size of the Baby Boom cohort, which is approaching retirement age, and due to the general decline in job security in the U.S. labor market. AIMS OF THE STUDY This research compares and contrasts the effect of involuntary job loss and retirement on the mental health of older Americans. Furthermore, it examines the impact of re-employment on the depressive symptoms. METHODS There are two fundamental empirical challenges in isolating the effect of employment status on mental health. The first is to control for unobserved heterogeneity--all latent factors that could impact mental health so as to establish the correct magnitude of the effect of employment status. The second challenge is to verify the direction of causality. First difference models are used to control for latent effects and a two-stage least squares regression is used to account for reverse causality. RESULTS We find that involuntary job loss worsens mental health, and re-employment recaptures the past mental health status. Retirement is found to improve mental health of older Americans. DISCUSSION With the use of longitudinal data from the Health and Retirement Study surveys and the adoption of proper measures to control for the possibility of reverse causality, this study provides strong evidence of elevating depressive symptoms with involuntary job displacement even after controlling for other late-life events. Women suffer from greater distress levels than men after job loss due to business closure or lay-off. However, women also exhibit better psychological well-being than men following retirement. The present study is the first to report that the re-employment of involuntary job-loss sufferers leads to a recapturing of past mental health status. Additionally, we find that re-entering the labor force is psychologically beneficial to retirees as well. IMPLICATIONS FOR HEALTH CARE PROVISION It is well established that out-of-pocket expenditures on all forms of health care for seniors with self-diagnosed depression significantly exceeds expenditures for seniors with other common ailments such as hypertension and arthritis in the U.S. Thus, our research suggests that re-employment of older Americans displaced from the labor force will be cost-effective with regard to personal mental health outcomes. IMPLICATIONS FOR HEALTH POLICIES That re-employment of involuntary job loss sufferers leads to a recapturing of past mental health status illuminates one potential policy trade off - increased resources dedicated to job training and placement for older U.S. workers could reap benefits with regard to reduced private and public mental health expenditures. IMPLICATIONS FOR FURTHER RESEARCH Further research could more clearly assess the degree to which the mental health benefits of employment among older Americans would warrant the expansion of job training and employment programs aimed at this group.

Behavioral and Welfare Effects of Tournaments and Fixed Performance Contracts: Some Experimental Evidence

Using experimental economics, we compare the efficiency and welfare effects of tournaments and fixed performance contracts. Our subjects (agents) were generally better off under fixed performance contracts, but the advantage of the fixed performance contract disappears if the relative magnitude of the standard deviation of the common shock exceeds a critical value. Efficiency wise, agents tend to exert higher effort under fixed performance contracts, on average. Additionally, an increase in the common shock standard deviation appeared to be associated with lower effort under tournaments. Our results shed light on the potential impact of legislative proposals to ban tournament contracts.