Soomi Lee

Latent profiles of perceived time adequacy for paid work, parenting, and partner roles.

This study examined feelings of having enough time (i.e., perceived time adequacy) in a sample of employed parents (N = 880) in information technology and extended-care industries. Adapting a person-centered latent profile approach, we identified 3 profiles of perceived time adequacy for paid work, parenting, and partner roles: family time protected, family time sacrificed, and time balanced. Drawing upon the conservation of resources theory (Hobfòll, 1989), we examined the associations of stressors and resources with the time adequacy profiles. Parents in the family time sacrificed profile were more likely to be younger, women, have younger children, work in the extended-care industry, and have nonstandard work schedules compared to those in the family time protected profile. Results from multinomial logistic regression analyses revealed that, with the time balanced profile as the reference group, having fewer stressors and more resources in the family context (less parent-child conflict and more partner support), work context (longer company tenure, higher schedule control and job satisfaction), and work-family interface (lower work-to-family conflict) was linked to a higher probability of membership in the family time protected profile. By contrast, having more stressors and fewer resources, in the forms of less partner support and higher work-to-family conflict, predicted a higher likelihood of being in the family time sacrificed profile. Our findings suggest that low work-to-family conflict is the most critical predictor of membership in the family time protected profile, whereas lack of partner support is the most important factor to be included in the family time sacrificed profile.

Daily antecedents and consequences of nightly sleep

Sleep can serve as both cause and consequence of individuals’ everyday experiences. We built upon prior studies of the correlates of sleep, which have relied primarily on cross‐sectional data, to examine the antecedents and consequences of sleep using a daily diary design. Specifically, we assessed the temporal sequence between nightly sleep and daily psychosocial stressors. Parents employed in a US information technology company (n = 102) completed eight consecutive daily diaries at both baseline and 1 year later. In telephone interviews each evening, participants reported on the previous nights sleep hours, sleep quality and sleep latency. They also reported daily work‐to‐family conflict and time inadequacy (i.e. perceptions of not having enough time) for their child and for themselves to engage in exercise. Multi‐level models testing lagged and non‐lagged effects simultaneously revealed that sleep hours and sleep quality were associated with next‐day consequences of work‐to‐family conflict and time inadequacy, whereas psychosocial stressors as antecedents did not predict sleep hours or quality that night. For sleep latency, the opposite temporal order emerged: on days with more work‐to‐family conflict or time inadequacy for child and self than usual, participants reported longer sleep latencies than usual. An exception to this otherwise consistent pattern was that time inadequacy for child also preceded shorter sleep hours and poorer sleep quality that night. The results highlight the utility of a daily diary design for capturing the temporal sequences linking sleep and psychosocial stressors.

High school start times after 8:30 am are associated with later wake times and longer time in bed among teens in a national urban cohort study

Objectives: High school start times are a key contributor to insufficient sleep. This study investigated associations of high school start times with bedtime, wake time, and time in bed among urban teenagers. Design: Daily‐diary study nested within the prospective Fragile Families and Child Wellbeing Study. Setting: Twenty US cities. Participants: Four hundred thirteen teenagers who completed ≥1 daily diary report on a school day. Measurements: Participating teens were asked to complete daily diaries for 7 consecutive days. School‐day daily diaries (3.8 ± 1.6 entries per person) were used in analyses (N = 1555 school days). High school start time, the main predictor, was categorized as 7:00‐7:29 am (15%), 7:30‐7:59 am (22%), 8:00‐8:29 am (35%), and 8:30 am or later (28%). Multilevel modeling examined the associations of school start times with bedtime, wake time, and time in bed. Models adjusted for age, sex, race/ethnicity, household income, caregivers education, and school type. Results: Teens with the earliest high school start times (7:00‐7:29 am) obtained 46 minutes less time in bed on average compared with teens with high school start times at 8:30 am or later (P < .001). Teens exhibited a dose‐response relationship between earlier school start times and shorter time in bed, primarily due to earlier wake times (P < .05). Start times after 8:30 am were associated with increased time in bed, extending morning sleep by 27‐57 minutes (P < .05) when compared with teens with earlier school start times. Conclusion: Later school start times are associated with later wake times in our large, diverse sample. Teens starting school at 8:30 am or later are the only group with an average time in bed permitting 8 hours of sleep, the minimum recommended by expert consensus for health and well‐being.

When Mothers’ Work Matters for Youths’ Daily Time Use: Implications of Evening and Weekend Shifts

Drawing upon the work-home resources model, this study examined the implications of mothers’ evening and weekend shifts for youths’ time with mother, alone, and hanging out with peers unsupervised, with attention to both the amount and day-to-day consistency of time use. Data came from 173 mothers who worked in the long-term care industry and their youths who provided daily diaries. Multilevel modeling revealed that youths whose mothers worked more evening shifts on average spent less time with their mothers compared to youths whose mothers worked fewer evening shifts. Youths whose mothers worked more weekend shifts, however, spent more time with their mothers and exhibited less consistency in their time in all three activity domains compared to youths whose mothers worked fewer weekend shifts. Girls, not boys, spent less time alone on days when mothers worked weekend shifts than on days with standard shifts. Older but not younger adolescents spent more time hanging out with friends on evening and weekend shift days, and their unsupervised peer time was less consistent across days when mothers worked more evening shifts. These effects adjusted for sociodemographic and day characteristics, including school day, number of children in the household, mothers’ marital status and work hours, and time with fathers. Our results illuminate the importance of the timing and day of mothers’ work for youths’ daily activities. Future interventions should consider how to increase mothers’ resources to deal with constraints on parenting due to their work during nonstandard hours, with attention to child gender and age.

A Greater Extent of Insomnia Symptoms and Physician-Recommended Sleep Medication Use Predict Fall Risk in Community-Dwelling Older Adults

Study Objectives Cross-sectional studies suggest that insomnia symptoms are associated with falls in later life. This longitudinal study examines the independent and interactive effects of the extent of insomnia symptoms (i.e., multiple co-existing insomnia symptoms) and sleep medications on fall risk over a 2-year follow-up among community-dwelling older adults. Methods Using data from the Health and Retirement Study (2006-2014, N = 6882, Mage = 74.5 years ± 6.6 years), we calculated the extent of insomnia symptoms (range = 0-4) participants reported (i.e., trouble falling asleep, waking up during the night, waking up too early, and not feeling rested). At each wave, participants reported recent sleep medications use and falls since the last wave, and were evaluated for balance and walking speed. Results A greater burden of insomnia symptoms and using physician-recommended sleep medications at baseline independently predicted falling after adjusting for known risk factors of falling. The effects of insomnia symptoms on fall risk differed by sleep medications use. The extent of insomnia symptoms exhibited a positive, dose-response relation with risk of falling among those not using sleep medications. Older adults using physician-recommended sleep medications exhibited a consistently higher fall risk irrespective of the extent of insomnia symptoms. Conclusions The number of insomnia symptoms predicts 2-year fall risk in older adults. Taking physician-recommended sleep medications increases the risks for falling in older adults, irrespective of the presence of insomnia symptoms. Future efforts should be directed toward treating insomnia symptoms, and managing and selecting sleep medications effectively to decrease the risk of falling in older adults.

The effects of a workplace intervention on employees’ cortisol awakening response

ABSTRACT Work-related stressors are known to adversely affect employees’ stress physiology, including the cortisol awakening response (CAR) – or the spike in cortisol levels shortly after people wake up that aids in mobilizing energy. A flat or blunted CAR has been linked to chronic stress and burnout. This daily diary study tested the effects of a workplace intervention on employed parents’ CAR. Specifically, we tested whether the effects of the intervention on CAR were moderated by the type of days (workday versus non-work day). Data came from 94 employed parents from an information technology firm who participated in the baseline and 12-month diurnal cortisol components of the Work, Family, and Health Study, a group-randomized field experiment. The workplace intervention was designed to reduce work-family conflict (WFC) and implemented after the baseline data collection. Diurnal salivary cortisol was collected on 4 days at both baseline and 12 months. Multilevel modeling revealed that the intervention significantly increased employees’ CAR at 12 months on non-workdays, but this was not evident on workdays or for employees in the usual practice condition. The results provide evidence that the intervention was effective in enhancing employees’ biological stress physiology particularly during opportunities for recovery that are more likely to occur on non-work days.

Sleep Health and Predicted Cardiometabolic Risk Scores in Employed Adults From Two Industries

STUDY OBJECTIVES Sleep disorders and sleep deficiency can increase the risk for cardiovascular disease. Less is known about whether multiple positive attributes of sleep health known as the SATED (satisfaction, alertness, timing, efficiency, and duration) model, can decrease future cardiovascular disease risks. We examined whether and how a variety of indicators of sleep health predicted 10-year estimated cardiometabolic risk scores (CRS) among employed adults. METHODS Workers in two industries-extended care (n = 1,275) and information technology (IT; n = 577)-reported on habitual sleep apnea symptoms and sleep sufficiency, and provided 1 week of actigraphy data including nighttime sleep duration, wake after sleep onset (WASO), sleep timing, and daytime napping. Workers also provided biomarkers to calculate future cardiometabolic risk. RESULTS More sleep apnea symptoms predicted higher CRS in both industries. More sleep sufficiency, less WASO, and less daytime napping (having no naps, fewer naps, and shorter nap duration) were also linked to lower CRS, but only in the extended care workers. There was no effect of sleep duration in both industries. In the IT employee sample, shorter sleep duration (≤ 6 hours versus 6-8 hours) and more naps strengthened the link between sleep apnea and CRS. CONCLUSIONS Sleep health, measured by both subjective and objective methods, was associated with lower cardiometabolic disease risks among extended care workers (lower to middle wage workers). Sleep apnea was an important predictor of CRS; for the IT workers, the link between sleep apnea and CRS was exacerbated when they had poorer sleep health behaviors.

Dynamic Interplay Between Sleep and Family Life: Review and Directions for Future Research

As a conclusion to this volume, we synthesize recent sleep research presented at Penn State’s 2016 Family Symposium and present key directions for future research on sleep in the family context. Four lines of research are summarized as a foundation for family scholars interested in incorporating examination of sleep into their research: (1) evolutionary and biological perspectives on sleep, (2) sleep and individual development across the life course, (3) sleep and family relationships, and (4) social and structural influences on sleep. We complete our discussion by proposing three key directions for sleep research in a family context: examine how families influence sleep as well as how sleep influences families over the life course, to further illuminate the dynamic interplay between family contexts and the health and well-being of family members; apply new research designs and methods for examining sleep within the family system; and develop family-focused interventions to improve families’ sleep.

Finding Time Over Time: Longitudinal Links Between Employed Mothers' Work-Family Conflict and Time Profiles

Drawing upon the Work–Home Resources model (ten Brummelhuis & Bakker, 2012), this study examined the links between work–family conflict and employed mothers’ profiles of time resources for work and parenting roles. Using a person-centered latent profile approach, we identified 3 profiles of time use and perceived time adequacy in a sample of mothers employed in the extended-care industry (N = 440): a Work-Oriented profile, characterized by spending relatively more time at work, perceiving lower time adequacy for work, spending less time with children, and perceiving lower time adequacy for children; a Parenting-Oriented profile, characterized by the opposite pattern; and a Role-Balanced profile, characterized by average levels across the 4 dimensions. Mothers in the Work-Oriented profile reported greater work-to-family conflict and family to-work conflict than those in the Role-Balanced and Parenting-Oriented profiles. Greater work-to-family conflict was linked to membership in the Work-Oriented profile, net of personal, family, and work characteristics. Longitudinal latent profile transition analysis showed that increases in work-to-family conflict across 12 months were linked to greater odds of moving toward the Work-Oriented profile (relative to staying in the same profile), whereas decreases in work-to-family conflict were linked to greater odds of moving toward the Parenting-Oriented profile. Results illuminate the heterogeneity in how employed mothers perceive and allocate time in work and parenting roles and suggest that decreasing work-to-family conflict may preserve time resources for parenting. Intervention efforts should address ways of increasing employees’ family time resources and decreasing work–family conflict.

Perceived time adequacy improves daily well-being: day-to-day linkages and the effects of a workplace intervention

ABSTRACT Workplace interventions may change how employed parents experience family and personal time. This study examined the day-to-day linkages between time resources (assessed by time use and perceived time adequacy for parenting, partner, and personal roles) and daily well-being and tested whether a workplace intervention enhanced the linkages. Participants were employed, partnered parents in the information technology division of a large US firm and who provided eight-day diary data at two times (N = 90). Multilevel modeling revealed that, on days when parents perceived lower time adequacy than usual for the three roles, they reported less positive affect, more negative affect, and more physical symptoms, independent of time spent in the roles. Moreover, a workplace intervention designed to give employees more temporal flexibility and support for family responsibilities increased daily time spent with the focal child and increased perceived time adequacy for exercise. The intervention also decreased negative affect and physical symptoms for parents who spent more time with child and partner than the sample average. Our results highlight the importance of perceived time adequacy in daily well-being and suggest that workplace support can enhance perceived time adequacy for self and the experience of family time.