key: cord-0703563-frnwm0oh
authors: Kifle, Zemene Demelash; Woldeyohanins, Alem Endeshaw; Asmare, Biniyam; Atanaw, Birhanu; Mesafint, Tigist; Adugna, Meaza
title: Assessment of lifestyle changes during coronavirus disease 2019 pandemic in Gondar town, Northwest Ethiopia
date: 2022-03-18
journal: PLoS One
DOI: 10.1371/journal.pone.0264617
sha: 5ad0f86f20788a38c2d524fc1f170929018d7f57
doc_id: 703563
cord_uid: frnwm0oh

BACKGROUND: Coronavirus disease 2019 has had a global effect on people’s lifestyles. Many people have developed irregular eating patterns and become physically inactive, which leads to an aggravation of lifestyle-related diseases and unhealthier lifestyles; these, subsequently raise the severity of coronavirus disease 2019. This study aimed to assess lifestyle changes during coronavirus disease 2019 pandemic in Gondar town, North West, Ethiopia. METHOD: Community-based cross-sectional study design was conducted among households at Gondar town from June to August 2021. The study participants were selected by a systematic random sampling technique from proportionally allocated kebeles. Data were collected using face-to-face interview techniques and were entered and analyzed by using a statistical package for the social sciences version 24; P-values < 0.05 were considered as statistically significant. RESULT: Overall, 348 study participants were included in the study. Among those respondents, 52.3% (182) were female study participants and the mean age of the respondents was 30.95±14.4. In this study, there was a significant decrement in non-homemade food from 20.4% to 13.4% at (P = <0.001). Concerning water intake, 11.5% (40) of respondents consumed ≥8 cups/day before the coronavirus disease 2019 pandemic, and the percentage increased to 14.7% (51) during the coronavirus disease 2019 pandemic (p = 0.01). Of the participants, 46% participants were reported never engaging in any physical activity before the coronavirus pandemic, and the percentage decreased to 29.9% during the pandemic (P = 0.002). The respondents also exhibited increment tension in large from 4.9% to 22.7% before and during the coronavirus disease 2019 pandemic, respectively. Furthermore, about 6.3% of the study participants slept badly before the coronavirus disease 2019 pandemics and the effects of sleeping badly and restlessly increased to 25.9% during the coronavirus disease 2019 pandemic (P = <0.001). CONCLUSION: The current study demonstrates that there is a noticeable alteration in food consumption, food choices, regular mealtime, sleeping habits, mental exhaustion, and practice of physical activity.

town. The town in which the study was conducted is located 727km away from Addis Ababa, the capital city of Ethiopia, and 175km from Bahir Dar, the capital city of Amhara Regional State. Based on the Central Statistical Agency (CSA) report of Ethiopia, Gondar town has about 351, 675 total population [22] . Gondar town has 23 kebeles and the study was conducted on randomly selected 8 Kebeles.

All households in Gondar town were the source population, whereas households in the selected kebeles of Gondar town were the study population. The included study participants were all adults older than 18 years old who lived in Gondar town. However, participants with a previous diagnosis of sleep or psychiatric disorder, chronic systemic disease, hearing problem, and pregnancy were excluded.

The sample size determination was made using the single population proportion formula with the following assumptions: a proportion of 71% [23] , a 95% confidence interval, a 5% margin of error, and 10% for non-response rate which gave a final sample size of 348. Then the total sample size, 348, was proportionally allocated among the eight selected kebeles based on the size of the households. From a total of 23 kebeles, eight kebeles were selected using a lottery method. The study participants were selected using a systematic random sampling technique from each household after getting a list of households from each kebele's administration. Accordingly, the interval was determined by dividing the total households to the total sample sizes and the first household was selected through the lottery method among households within the first range of interval. If a selected household was not accessible, the next household was included. When two or more participants were identified in the same household, one participant was chosen using the lottery method. A family member aged 18 years and above was the respondent whenever the households were not available at the time of data collection.

Data was collected using a validated interview-based questionnaire and different published articles were reviewed to prepare the data collection tool [24] [25] [26] [27] [28] [29] [30] . The questionnaire contains socio-demographic characteristics, eating habits, physical activity, stress and irritability, and sleeping habits of COVID-19. Before starting interviewing the questionnaires primarily being prepared in English then translated to local language (Amharic) for its consistency and understandability to the patients in which this research conducted. During translation, all the concerns and the local linguistic had been put into consideration and the local language (Amharic) was translated back to English for the appropriateness and conformability of analysis the finding of the research. Pretest was conducted among 5% of the participants from Metema town and modification had been considered according to its findings. The reliability of the questionnaire was checked with a Cronbach's Alpha value of 0.768. After modification and amendment of the data was collected by face-to-face interview by two clinical pharmacy professionals after they obtain a one-day training on the tools and necessary care needed. The study participants were interviewed at the residence of the participants.

Lifestyles. The way of living of human beings [31] . Lifestyle changes. Behavior modifications or habit changes that encourage positive life changes [32] .

Eating. Ingestion of food or fluid [33] .

Physical activity assessment. A revised version of the International Physical Activity Questionnaire Short Form was used to evaluate the frequency of physical activity before COVID-19 and during COVID-19 among respondents [34] . Respondents were asked to indicate "how many hours per day did they spend on the computer for work or study", "how many days per week did they engage in moderate to vigorous physical activity", "how many hours per day did they spend on screens for fun and entertainment", and "how many days per week did they engage in household chores".

Stress, irritability, and sleep assessment. The modified version of the Copenhagen Psychosocial Questionnaire with modifications was used to assess the stress and sleep pattern of the respondents before COVID-19 and during COVID-19 among respondents [35] . Concerning stress and irritability, respondents were asked to provide the frequency of experiencing emotional irritability, exhaustion, tension, and physical exhaustion. The same questions were asked pre-COVID-19 and during COVID-19. Regarding sleep, respondents were asked if they experienced sleep disturbances such as restlessly and sleeping badly; having difficulty to go to sleep; waking up several times and found it difficult to get back to sleep; waking up too early and not being able to get back to sleep; or none of the options. The questionnaire also comprised the following questions: "rating sleep quality", "number of sleeping hours per night", and "describing energy level during the day". The repose options for describing energy level were energized; neutral; lazy. The repose options for rating sleep quality were very good; good; poor.

Perceived health state. A commonly used measure is the person's rating of his or her own general health, as in the five-category classification, excellent, very good, good, fair, or poor. Used in the National Health Interview Survey and many other studies, this item has been shown to be predictive of morbidity, mortality, and future medical care use. Excellent health state-this category includes persons who rated their health as excellent or whose health was rated as excellent by someone knowledgeable about them. This is the most positive rating on the perceived health state. Very good-this category includes persons who rated their health as very good or whose health was rated as very good by someone knowledgeable about them. The rating very good comes between excellent and good. Good-this category includes persons who rated their health as good or whose health was rated as good by someone knowledgeable about them. This is the midpoint on the perceived health scale which is a five-point scale ranging from excellent to poor. Fair-this category includes persons who rated their health as fair or whose health was rated as fair by someone knowledgeable about them. The rating fair comes between good and poor. Poor-this category includes persons who rated their health as poor or whose health was rated as poor by someone knowledgeable about them. This is the most negative rating on the perceived health scale, a five-point scale ranging from excellent to poor [36, 37] .

Before analysis of the data, the collected data was checked for its completeness, consistency, and validity. Then the data was cleaned and entered to EPI-info version 7.2.1 and transferred to Statistical Package for the Social Sciences (SPSS) version 24 statistical software for analysis. Analysis of the data concerned with the descriptive and analytical part. For analytical presentation frequency, cross-tabulation and texts were considered. For the analytical part, the significant changes were before and during the COVID-19 pandemic were tested by paired t-test. Pvalue < 0.05 at 95% confidence interval had been considered as statistically significant. Model goodness-of-fit was determined by, if P-value <α-is possible to (reject the null hypothesis) and there is a significant difference between the paired independent variables.

The quality of data was ensured by doing the questionnaire pre-tested on 5% of the total sample size at Metema town that is assumed to have similar characteristics to the targeted population. Based on the feedback obtained from the pretest of the respondent's interview, the necessary amendment was done and the questionnaire was assessed for its clarity; the completeness and evaluate the validity and content of the questionnaire and modified accordingly. Close supervision had been made by the supervisor during the data collection and appropriate feedback was provided. The training was provided to the data the 2 collectors for one day by the principal investigator and the training was focused on the objective, how to obtain consent, keeping the confidentiality of the information they gathered. The collected data was cheeked for its completeness every day before the following day of data collection by supervisors and the principal investigator and corrective measures were taken according to the finding during supervision.

Ethical clearance was obtained from the Ethical Review Committee of College of Medicine and Health Science, School of Pharmacy, the University of Gondar with a reference number of SOP/262/2021, and the study was also conducted following the Declaration of Helsinki. Informed written consent was obtained from the study participants at the beginning of filling the survey. The information collected from respondents was kept confidential and there were no personal identifiers in the questionnaire.

Overall, 348 study participants were included in the study and it produces a response rate of 100%. Among those respondents, 52.3% (182) were female study participants and the mean age of the respondents was 30.95±14.4, whereas more than one-third of the study subjects 34.5% (120) were found within the age group of 18-25 years. Of the total study participants, 71.8% (250) were orthodox in their religion, and about half of the study participants 48.9% (170) engaged with marriage, whereas 51.7% (180) had no children. Regarding educational status, 25% (87) of the study participants college/diploma by their educational status. Of all respondents, more than one-third 30.5% (106) of the study participants were full-time by their employment status. On the other way, 45.1% (157) of the study participants earn <2500 ETB monthly, whereas less than one-third 29.6% (102) of the study subjects maintain their weight. Similarly, 43.4% (151) of them perceive a very good state of health during the COVID-19 pandemic ( Table 1) . 

Of the total 348 study participants, less than one-third 29% (101) of them got health-related information from mass media like television, whereas 27.6% (96) of the study subjects got a source of food and nutrition-related information from television. Furthermore, healthcare professionals were selected as the second source of information for Health-related information 21.6% (75) and social media for nutrition-related information 15.5% (61). ( Table 2 ).

Concerning meal consumption of the respondents, there is a significant decrement of nonhomemade food from 20.4% to 13.4% at (<0.001). However, there is an increment in the frequency of food consumption �5 meals by 2% (0.001) during the COVID-19 pandemic. Unfortunately, there is a significant decrement in skipping breakfast from 29.9% to 27.3% (<0.001) during the COVID-19 pandemic, but there is no change in skipping meals during COVID-19 (0.72). Concerning water intake, 11.5% (40) of respondents consumed �8 cups/day before the COVID-19 pandemic, and the percentage increased to 14.7% (51) during the COVID-19 pandemic (p = 0.01) ( Table 3 ).

In this study, about 44 

Concerning shopping, 62.1% (216) of the respondents were prepared the list of grocery shopping before the coronavirus pandemic. However, during the COVID-19 pandemic preparation of grocery shopping lists increased to 62.6% (218). Of the overall study participants, more than one-third 39.4% (137) participants started stocking up on food before the COVID-19 pandemic and increased start stocking up on food during the COVID-19 pandemic to 48% (167). Findings of the current study also revealed that the order of groceries online (delivered to house) before coronavirus pandemic was 23.9% (83), whereas the order of groceries online (delivered to house) during coronavirus pandemic also increased to 24.7% (86) during 

In this study, about 46% of the respondents reported never engaging in any physical activity before the coronavirus pandemic, and the percentage decreased to 29.9% during the pandemic (p = 0.002). Moreover, subjects who perform a certain exercise before the COVID-19 pandemic in household chores showed a significant increment in everyday household exercise from 43.1% before the COVID-19 pandemic to 53.2% during the COVID-19 pandemic (<0.001). On the other hand, 33.6% of the study participants were spent 1-2 hours on the computer for work/ study daily before the coronavirus pandemic, whereas during the COVID-19 pandemic the report decreased to 23.3% (<0.01). However, the percentage of respondents spending 3-5 h/day on screen for TV and entertainment during the COVID-19 pandemic was increased from 26.4% (before COVID-19) to 33% (during COVID-19) pandemic (0.03) ( Table 6 ).

Stress and irritabilities are a sign and symptoms of different physical and emotional disturbances. About 11.8% and 12.4% of the study participants were physically exhausted in all parts Table 3 . Eating habits pre-and during COVID-19 pandemic (n = 348). of the time before and during the COVID-19 pandemic, respectively. Of the participants, 8.3% and 10.6% participants were emotionally exhausted in all parts of the time before and during the COVID-19 pandemic, respectively. However, the level of irritability before the COVID -19 Table 4 . The frequency of consumption of particular foods during the COVID-19 pandemic (n = 348). pandemic increased from 7.2% to 21.3% during the COCVID-19 pandemic. The respondents also exhibited increment of tension in large from 4.9% to 22.7% before and during the COVID-19 pandemic, respectively (Fig 1) . 

Before the coronavirus pandemic, about 35.9% of the respondents have a night sleep <7 hrs, but the effects reduced to 35.1% during coronavirus pandemic (<0.001). Regarding sleeping quality, before the coronavirus pandemic, 43.7% and 8.3% have very good and poor sleep quality, respectively. However, the report of poor quality of sleep increased by 28.2% during the COVID-19 pandemic. About 6.3% of the study participants slept badly before the COVID-19 pandemic and the effects of sleeping badly and restlessly increased to 25.9% during the COVID-19 pandemic (<0.001). Of the participants, 19.3% participants were rated energy level before coronavirus pandemic as energized and decreased to 18.4% during COVID-19 pandemic with no significant change. However, a significant change was noticed in the energy level before the COVID-19 pandemic as lazy (5.7%) and increased to (18.4%) during COVID-19 (0.035) ( Table 7) .

This community-based cross-sectional study assessed the lifestyle changes during COVID 19 pandemic in Gondar town, North West, Ethiopia between June and August 2021. Change in dietary habit due to COVID-19 is one of the outlines that show variations in the direction of good health habits with increased consumption of vegetables, fruits, legumes, and fish, but in other cases, they show changes toward higher consumption of sugary beverages which can inhibit the good habits and predispose for unhealthier habits [38, 39] . The current study focused on meal consumption revealed that there are significant downgrade alterations of non-homemade food conceptions. This could be due to the fear of COVID-19 transmission from either restaurant delivery persons, or hygiene practices. This finding is in agreement with previous studies conducted in United Arab Emirates [30] , Kuwait [40] , and Saudi Arabia [41] . However, there is an increment in the frequency of food consumption �5 meals by 2% (0.01) during the COVID-19 pandemic. This finding is inconsistent with a study conducted in the United Arab Emirates [30] . In this study, the consumption of fruit, vegetable, milk and milk products, beard/rice/pasta, and sweet beverages was lower than the study conducted in the United Arab Emirates [30] . The variation in sweet drinks and another feeding style may be a change in lifestyle habits and economical status. The rate of food intake in the current study is also lower than the study conducted in Italy and China [28, 42] . The difference in dietary habits may be due to changes compatible with greater adherence to the usual diet. These patterns indicate unhealthy eating behaviors during the period of the pandemic. This is constituent with previous similar studies reporting a transformation of the diet from a traditional diet to a more Westernized diet which is high in salt, cholesterol, energy, refined carbohydrates, and saturated fat, and low in fiber, vegetables, fruits, and polyunsaturated fats [43] [44] [45] [46] .

Performing regular physical activity is one of the mechanisms to reduce the effects of COVID-19 severity [39, 47] . The current study revealed that about 46% of the respondents reported never engaging in any physical activity before the coronavirus pandemic, furthermore the percentage decreased to 29.9% during the pandemic (p = 0.002). The possible reason for the decrement of physical activity in the current study may be due to staying at home, improper understanding of the advantages of physical activity to general health, and lack of commitment to perform physical activity. This finding is consistent with a study conducted in Spain that a lower rate of people was engaged in physical activity [48] . However, the rate of physical activity was lower when compared to studies conducted in Sweden [49] , Italy [28] , and the University of Sarajevo [50] . The current study highlights the level of stress explained by physical, emotional, irritability, and tension as it predisposes poor health outcomes and leads to aggravating COVID-19 infection poor sleep. COVID-19 pandemic had a dramatic influence on lifestyle behaviors worldwide, including reduced engagement in physical activity and sports in general. Therefore, awareness concerning the importance of regular physical activity and its benefits on overall health is essential during such times [51, 52] .

During the COVID-19 pandemic higher levels of stress, anxiety, and depression have been detected among individuals [53] [54] [55] . The stress and irritabilities are poor indicators of health outcome and the current study revealed that about 11.8% and 12.4% of the study participants were physically exhausted in all parts of the time before and during the COVID-19 pandemic, respectively while 8.3% and 10.6% of the respondents emotionally exhausted before and during COVID-19 pandemic all part of the time. However, the level of irritability before the COVID -19 pandemic increased from 7.2% to 21.3% during the COCVID-19 pandemic. The respondents also exhibited increment of tension in large from 4.9% to 22.7% before and during the COVID-19 pandemic, respectively. The magnitude of the current study was higher when compared with the study conducted in Ethiopia with the magnitude of stress (11.1%) [56] . This higher magnitude may be due to prolonged stays at home and isolation despite applying COVID -19 prevention. However, the study finding is lower when compared with the study conducted in the United Kingdom [57] , and Russia [58] , but the level of physical exhaustion, emotional exhaustion, and irritability is in line with a study conducted in the United Arab Emirates, that before vs after the pandemic (13.3% vs 7.7% for physical exhaustion; 14.1% vs. 6.3% for emotional exhaustion; 13.5% vs. 6.9% for irritability; and 17.8% vs. 6.3% for tension), respectively [30] .

Anxiety and stress could disrupt sleep quality during the night and energy levels during the day and it is clear that the quality of sleep affects the general health of the respondents [30] . In this study, 8.3% of the respondents had poor sleep quality pre-COVID-19, however, the report of poor quality of sleep was increased by 19.9% during the COVID-19 pandemic. The insomnia level of respondents was declared when the sleep habits < 7hrs and this finding is lower when compared with a similar study conducted in Ethiopia with a total rate of 71% [23] . This significant difference may be due to fear of the effects of the COVID-19 pandemic and habits of daytime sleep other than nighttime sleep. Regarding the quality of sleep, the rate of poor sleep quality was lower when compared with previous similar studies (39.5%) [59] , and (35.2%) [60] . However, the level of sleep quality was higher than the study conducted in Russia of which 12.4% suffered from chronic sleep deprivation and about 50.2% of the study participants did not get the required amount of sleep due to a high workload [58] . This difference may be due to fear of loneliness in the case of corona and fear of separation from family members as well as fear of the diseases.

Since it was a cross-sectional study design, it did not display the conditions of cause and effect association. In addition, the study was limited to the Gondar town, which may not be representative of the rural area.

The promotion of correct lifestyles is crucial for the protection of health, but it becomes even more so in case of forced confinement at home. The current study demonstrates that there is a noticeable alteration in food consumption, food choices, regular mealtime, mental exhaustion, and practice of physical activity. Sleeping habits, level of restlessness, and insomnia also changed during COVID -19.

As there is poor practice of physical activity, the study participants should be moved toward home-based physical activity programs. Psychological changes may compromise the health status of the individual therefore, psychological counseling and positive reassurance are necessary. Adequate sleep is crucial, hence avoiding frustration, eating adequate and appropriate food, avoiding caffeine intake, and Coca-Cola beverage intakes are recommended to promote good sleep quality. Even though quarantine is an indispensable measure to control the transmission of the virus and protect public health, these findings should be taken into consideration for future regulations in Ethiopia. 

Clinical, molecular, and epidemiological characterization of the SARS-CoV-2 virus and the Coronavirus Disease 2019 (COVID-19), a comprehensive literature review. Diagnostic microbiology and infectious disease

The coronavirus and the great influenza pandemic: Lessons from the "spanish flu" for the coronavirus's potential effects on mortality and economic activity

Global financial crisis, smart lockdown strategies, and the COVID-19 spillover impacts: A global perspective implications from Southeast Asia

Coronavirus disease 2019 (COVID-19): the portrait of a perfect storm

Economic effects of coronavirus outbreak (COVID-19) on the world economy

Effects of COVID-19 home confinement on eating behaviour and physical activity: results of the ECLB-COVID19 international online survey

A longitudinal study on the mental health of general population during the COVID-19 epidemic in China

Self-quarantine and weight gain related risk factors during the COVID-19 pandemic

Changes in weight and nutritional habits in adults with obesity during the "lockdown" period caused by the COVID-19 virus emergency

The anxiety and stress of the public during the spread of novel coronavirus (COVID-19)

Impact of COVID-19 outbreak on lifestyle behaviour: A review of studies published in India

Quarantine during COVID-19 outbreak: Changes in diet and physical activity increase the risk of cardiovascular disease. Nutrition, Metabolism and Cardiovascular Diseases

Coronavirus COVID-19 disease, mental health and psychosocial support

WHO SAGE roadmap for prioritizing uses of COVID-19 vaccines in the context of limited supply: an approach to inform planning and subsequent recommendations based on epidemiological setting and vaccine supply scenarios

The psychological impact of the SARS epidemic on hospital employees in China: exposure, risk perception, and altruistic acceptance of risk. The Canadian Journal of Psychiatry

Mental health and the Covid-19 pandemic

Eating disorders and obesity (ED&O) in the COVID-19 storm

Eating disorders in the time of COVID-19

COVID-19 and mental health: A review of the existing literature

Multidisciplinary research priorities for the COVID-19 pandemic: a call for action for mental health science. The Lancet Psychiatry

The outbreak of COVID-19 coronavirus and its impact on global mental health

Economy directory (2017) Population Census projection in 2017. Gondar Finance and Economic office

Depression, anxiety symptoms, Insomnia, and coping during the COVID-19 pandemic period among individuals living with disabilities in Ethiopia

Sleep pattern changes in nursing students during the COVID-19 lockdown

Physical activity change during COVID-19 confinement

Positive and negative changes in food habits, physical activity patterns, and weight status during COVID-19 confinement: associated factors in the Chilean population

Physical activity and sedentary lifestyle in university students: changes during confinement due to the COVID-19 pandemic

Determinants of the lifestyle changes during COVID-19 pandemic in the residents of Northern Italy. International journal of environmental research and public health

Eating habits and lifestyle changes during COVID-19 lockdown: an Italian survey

Eating habits and lifestyle during COVID-19 lockdown in the United Arab Emirates: a cross-sectional study

Lifestyles. 2012: Routledge

Challenges of making healthy lifestyle changes for families in Aotearoa/New Zealand. Public health nutrition

The practice of eating

Validity of the international physical activity questionnaire short form (IPAQ-SF): A systematic review

The second version of the Copenhagen Psychosocial Questionnaire. Scandinavian journal of public health

National health interview survey

Health and well-being. Young people's health in context. Health behaviour in school-aged children (HBSC): international report from the

The Effects of COVID-19 on the Eating Habits of Children and Adolescents in Italy: A Pilot Survey Study

Patterns of change in dietary habits and physical activity during lockdown in Spain due to the COVID-19 pandemic

Does COVID-19 change dietary habits and lifestyle behaviours in Kuwait: a community-based cross-sectional study. Environmental health and preventive medicine

COVID-19 pandemic's impact on eating habits in Saudi Arabia

The association between subjective impact and the willingness to adopt healthy dietary habits after experiencing the outbreak of the 2019 novel coronavirus disease (COVID-19): a cross-sectional study in China

Nutrition transition in the United Arab Emirates

The role of diet and lifestyle in women with breast cancer: an update review of related research in the Middle East

Prevalence and risk factors associated with nutrition-related noncommunicable diseases in the Eastern Mediterranean region. International journal of general medicine

Nutrition-related health patterns in the Middle East. Asia Pacific journal of clinical nutrition

Physical activity and the risk of SARS-CoV-2 infection, severe COVID-19 illness and COVID-19 related mortality in South Korea: a nationwide cohort study

Changes in health behaviors, mental and physical health among older adults under severe lockdown restrictions during the COVID-19 pandemic in Spain. medRxiv

Lifestyle habits and mental health in light of the two COVID-19 pandemic waves in Sweden

Level of Active Lifestyle and Exercise Approach among Sports-Active Female Students of The University of Sarajevo during the Covid-19 Pandemic

Physical exercise as therapy to fight against the mental and physical consequences of COVID-19 quarantine: Special focus in older people. Progress in cardiovascular diseases

Health benefits, safety and cost of physical activity interventions for mental health conditions: A meta-review to inform translation efforts

Public responses to the novel 2019 coronavirus (2019-nCoV) in Japan: Mental health consequences and target populations. Psychiatry and clinical neurosciences

Immediate psychological responses and associated factors during the initial stage of the 2019 coronavirus disease (COVID-19) epidemic among the general population in China. International journal of environmental research and public health

Iranian mental health during the COVID-19 epidemic. Asian journal of psychiatry

Prevalence and severity of depression, anxiety, and stress during pandemic of COVID-19 among college students in Addis Ababa, Ethiopia, 2020: a cross sectional survey

Adolescent lifestyle behaviors, coping strategies and subjective wellbeing during the COVID-19 pandemic: an online student survey

Indoor Environmental Quality in Dwellings and Lifestyle Behaviors during the COVID-19 Pandemic: Russian Perspective

Impact of the novel coronavirus (COVID-19) pandemic on sleep

Poor sleep during the first peak of the SARS-CoV-2 pandemic: a cross-sectional study