Lindsey P Smith

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BACKGROUND It has been well-documented that Americans have shifted towards eating out more and cooking at home less. However, little is known about whether these trends have continued into the 21st century, and whether these trends are consistent amongst low-income individuals, who are increasingly the target of public health programs that promote home(More)
BACKGROUND Although body mass index (BMI) and waist circumference (WC) are correlated, the relationship between WC and BMI may have changed over time. OBJECTIVES To describe temporal trends in BMI and WC distributions and quantify the increase in WC at a given BMI over time. SUBJECTS/METHODS Data on adults aged 20-59 years from two waves (1993 and 2009)(More)
Labor, delivery, and newborn course were studied in 621 pregnancies in which labor was electively induced at or after 39 weeks, and in 3,851 control pregnancies in which the onset of labor was spontaneous. Induced labors were not prolonged, nor was the duration of ruptured membranes. Fetal distress and birth asphyxia were not more frequent after induction,(More)
Physical activity and inactivity have distinct cardio-metabolic consequences, suggesting that combinations of activities can impact health above and beyond the effects of a single activity. However, little work has examined patterns of non-labor market time activity in the US population, particularly among full-time employees in sedentary occupations, who(More)
The purpose of this study is to test the hypothesis that convenience for the physician plays a role in the rate of cesarean section performed because of dystocia. Three time periods were defined (night, 12 midnight to 7:59 AM; day, 8 AM to 5:59 PM; evening, 6 PM to 11:59 PM) based on the work commitments and daily routines of the obstetrician. Rates of(More)
This paper addresses the need for diet assessment methods that capture the rapidly changing beverage consumption patterns in China. The objective of this study was to develop a 3-day smartphone-assisted 24-hour recall to improve the quantification of beverage intake amongst young Chinese adults (n=110) and validate, in a small subset (n=34), the extent to(More)
OBJECTIVES We examined the effects of state-level unemployment rates during the recession of 2008 on patterns of home food preparation and away-from-home (AFH) eating among low-income and minority populations. METHODS We analyzed pooled cross-sectional data on 118 635 adults aged 18 years or older who took part in the American Time Use Study. Multinomial(More)
Age and portion size have been found to influence food intake in American children but have not been examined in an international context. This study evaluated the association between age and the effects of portion size on the food intake of kindergarteners in Kunming, China. Using a within-subjects crossover design in a classroom setting, 173 children in(More)
OBJECTIVE We examined trends from 1991-2009 in total energy intake and food group intake, and examine whether shifts varied by age or generation. DESIGN Longitudinal time series (1991, 1993, 1997, 2000, 2004, 2006, 2009). SETTING Nine provinces in China. PARTICIPANTS Older Chinese aged ≥60 years (n=5,068) from the China Health and Nutrition Survey(More)
OBJECTIVE To examine the acceptability and feasibility of using smartphone technology to assess beverage intake and evaluate whether the feasibility of smartphone use is greater among key sub-populations. DESIGN An acceptability and feasibility study of recording the video dietary record, the acceptability of the ecological momentary assessment (EMA),(More)