key: cord-0828662-hou3rvn2 authors: Zhao, Sheng Zhi; Luk, Tzu Tsun; Wu, Yongda; Weng, Xue; Wong, Janet Yuen Ha; Wang, Man Ping; Lam, Tai Hing title: Factors Associated With Mental Health Symptoms During the COVID-19 Pandemic in Hong Kong date: 2021-06-07 journal: Front Psychiatry DOI: 10.3389/fpsyt.2021.617397 sha: 093b0199bec06ffd4d81cac93144cc8bb235470f doc_id: 828662 cord_uid: hou3rvn2 Background: The COVID-19 pandemic has led to an increasing mental health burden. We examined the factors associated with mental health symptoms in Chinese general adults in Hong Kong. Methods: We conducted a dual-frame (landline and mobile) survey on Chinese adults aged 18 years or older in April 2020. Shortage of preventive materials, perceptions of the outbreak (each item range 1–5), and reduction in income were assessed. Mental health symptoms measured included stress (Perceived Stress Scale-4, range 0–16), anxiety (General Anxiety Disorders-2, range 0–6, cutoff >2), and depressive symptoms (Patient Health Questionnaire-2, range 0–6, cutoff >2). Results were weighted by the general population distribution. Associations were analyzed by multivariable linear (for stress) and logistic (for anxiety and depressive symptoms) regression adjusting for sociodemographic and health-related covariates, including confirmed or in close contacts of confirmed cases, chronic disease, self-rated health, and smoking and alcohol drinking behavior. Results: Of the 1,501 participants (52.5% female, 55.0 aged 30–59 years), the average stress score was 7.20 (SD 2.12). 218 (15.8%) and 206 (14.8%) participants had anxiety and depressive symptoms, respectively. Shortage in facemasks (20.8%), alcohol-based hand sanitizers (13.9%), and cleaning products (7.3%) was reported. Participants generally disagree with the perception of at risk of getting infected in the coming 6 months (mean 2.2, SD 1.1), but tended to agree with the perception of worry that the people around pose a threat to them (mean 3.6, SD 0.9) and the outbreak has greatly affected their daily life (mean 3.7, SD 0.9). 59.3% employed participants had income reduction and 6.2% had become unemployed since the outbreak. Stress, anxiety, and depressive symptoms were more prevalent in those with shortages of preventive materials and negative perceptions of the outbreak (all P < 0.05). Reduction in income and unemployment were associated with more mental health symptoms (all P < 0.05). Conclusions: Shortage of preventive materials, negative perceptions, financial loss, and unemployment were prevalent during the outbreak and found in association with higher stress and more anxiety and depressive symptoms. Further research and urgent actions are warranted to relieve stress and promote mental health, targeting the many risk factors identified by our study. Background: The COVID-19 pandemic has led to an increasing mental health burden. We examined the factors associated with mental health symptoms in Chinese general adults in Hong Kong. Methods: We conducted a dual-frame (landline and mobile) survey on Chinese adults aged 18 years or older in April 2020. Shortage of preventive materials, perceptions of the outbreak (each item range [1] [2] [3] [4] [5] , and reduction in income were assessed. Mental health symptoms measured included stress (Perceived Stress Scale-4, range 0-16), anxiety (General Anxiety Disorders-2, range 0-6, cutoff >2), and depressive symptoms (Patient Health Questionnaire-2, range 0-6, cutoff >2). Results were weighted by the general population distribution. Associations were analyzed by multivariable linear (for stress) and logistic (for anxiety and depressive symptoms) regression adjusting for sociodemographic and health-related covariates, including confirmed or in close contacts of confirmed cases, chronic disease, self-rated health, and smoking and alcohol drinking behavior. Results: Of the 1,501 participants (52.5% female, 55.0 aged 30-59 years), the average stress score was 7.20 (SD 2.12). 218 (15.8%) and 206 (14.8%) participants had anxiety and depressive symptoms, respectively. Shortage in facemasks (20.8%), alcohol-based hand sanitizers (13.9%), and cleaning products (7.3%) was reported. Participants generally disagree with the perception of at risk of getting infected in the coming 6 months (mean 2.2, SD 1.1), but tended to agree with the perception of worry that the people around pose a threat to them (mean 3.6, SD 0.9) and the outbreak has greatly affected their daily life (mean 3.7, SD 0.9). 59.3% employed participants had income reduction and 6.2% had become unemployed since the outbreak. Stress, anxiety, and depressive symptoms were more prevalent in those with shortages of preventive materials and negative perceptions of the outbreak (all P < 0.05). Reduction in income and unemployment were associated with more mental health symptoms (all P < 0.05). Conclusions: Shortage of preventive materials, negative perceptions, financial loss, and unemployment were prevalent during the outbreak and found in association with higher stress and more anxiety and depressive symptoms. Further research and urgent actions The novel coronavirus disease 2019 (COVID- 19) pandemic has led to an increase in mental health problems. Since the COVID-19 outbreak, a survey in China showed that 53.8% of the participants reported moderate to severe psychological distress (1) . The prevalence of anxiety (5.3 vs. 31 .6%) and depressive (6.0 vs. 27.9%) symptoms increased by about 4-5 times after the outbreak (2) . In the USA, 13.6% of the adults experienced serious psychological distress in April 2020, compared with 3.9% in 2018 (3) . Anxiety and depressive symptoms doubled in Hong Kong during the outbreak (4). Hong Kong had its first confirmed COVID-19 case on January 23, 2020. Public health interventions, including isolation, quarantine, contact tracing, work-from-home arrangements, school suspensions, shutdown of non-essential services, and social distancing, were shown to be effective measures to restrain the infection and mortality during the first 8 weeks such that only a few cases were reported per day (5) . Changes in daily life and personal behaviors were substantial, such that avoiding crowded places and voluntarily wearing a facemask was reported by 85 and 98.8% of the participants, respectively, even without a complete lockdown (5) . Following the influx of imported cases, local cluster outbreaks became more severe and Hong Kong had its second peak in late March with 1,035 confirmed cases by April 23, 2020. The pandemic was spreading faster and wider than those of the past. Having confirmed or close contact with confirmed cases and living in the epicenter were found to be associated with mental health crisis during the pandemic (1, 2) . Urgently adopted mitigation measures were accompanied by a disruption of daily life that was potentially associated with poor mental health both directly and indirectly (6) (7) (8) . Exposure to the virus, quarantine, and isolation were directly linked to negative psychological health, especially for front-line medical workers and older adults (7, (9) (10) (11) . Social distancing and personal protective measures were reported to be associated with stress, anxiety, and depressive symptoms (11) . Other social consequences, including supplies of medical products, perceived affect, disrupted daily, study and work life, and financial insecurity, may have also impacted the mental health of the general population (6, 7, 12) . The use of facemasks, alcohol-based hand sanitizers, and other cleaning products (e.g., bleach) was advocated for breaking the chain of infection, which led to a surge in public demand for these preventive materials (1, 5, 13) . Reports of shortages of medical protective materials caused enormous concern and led to panic buying and stockpiling during the local outbreak (14) (15) (16) . Studies found that having sufficient medical resources was a protective factor against psychological distress (7, 16) . Therefore, we hypothesized that lack of preventive material may contribute to higher stress and more mental health symptoms during the pandemic. Negative perceptions toward the pandemic may also exacerbate mental distress. Fear of contracting the virus was associated with poor mental well-being and lower quality of life and partially mediated the association between intolerance of uncertainty and depression (17, 18) . The banning of social gathering, mandatory closure of schools, and suspension of nonessential productions and commercial activities disrupted most daily activities (6) . Perceived at risk of getting infected and believe that the pandemic poses threats to one's health and significantly affected daily, study, and work life could possibly aggravate mental health symptoms, although the associations have remained understudied. Border and transportation restrictions slowed global economic activity (19) . Many transnational and local businesses, especially tourism and catering, were affected (19) . International Labor Organization found an increase in the unemployment rate worldwide due to disruptions of socioeconomic activities (20) . Delays in returning to work were found to increase risks of anxiety and depressive symptoms (2) . Studies found that quarantine measures disproportionately affected those who had a lower household income (7, 11) . Individuals with financial loss or unemployment since the pandemic may suffer from more mental health symptoms. Financial struggles, although indirectly associated with the pandemic and the mitigation measures, were suggested to be associated with mental health problems during the pandemic and, therefore, warrant further investigation (11) . Most current studies focus on well-known risk factors of mental distress (e.g., female gender, medical history, and poor self-rated health) and established stressors in a pandemic (e.g., being infected and quarantine) (7, 10) . During this globally worsening pandemic, few studies have reported that the mental health of the general population was impacted by pandemicrelated changes (2, 11, 21) . By the end of March 2020, Hong Kong was recorded as one of the most heavily affected epicenters outside of Hubei, China. The mental health impact of the abrupt changes in population behavior observed in this developed urban city could be expected in other regions and countries even with sufficient medical resources. In this population-based crosssectional study, we investigated potential risk factors, including perceived shortage of preventive materials, daily disruptions, and financial loss, and their association with stress and mental health (anxiety and depression) symptoms immediately after the peak of the second wave using a representative general adult sample in Hong Kong. The Hong Kong COVID-19 Health Information Survey (CoVHInS) was conducted using a probability-based dual sampling frame of landline telephone and online mobile surveys on Chinese adults aged 18 and above. The survey was conducted from April 9 to April 23, 2020, ∼2-4 weeks after the peak of the second wave of the COVID-19 outbreak in Hong Kong. Social Policy Research Limited, a reputable survey agency in Hong Kong, was commissioned to collect the data. The Institutional Review Board of the University of Hong Kong/Hospital Authority Hong Kong West Cluster (UW 20-238) approved of the study. Informed consent was obtained from all participants. Details of the methods have been reported elsewhere (22) . Briefly, a two-stage random sampling method was adopted for the landline survey. First, seed numbers were generated using the official's numbering plan for telecommunication services. A web-based Computer-Assisted Telephone Interview system (Web-CATI) was used to generate a random telephone numbers list for interviews. Second, of those we were able to contact, eligible household residents whose coming birthdays were closest to the interview day were selected (next birthday rule). All telephone interviewers completed a half-day training of COVID-19-related knowledge, contents of the questionnaire, sampling methods, and interviewing techniques. The questionnaire was pilot-tested on 10 participants to refine the items and procedure. Consistency checks were conducted during the interview to probe correct answers from the participants. To ensure the research fidelity, briefing and de-briefing sessions for interviewers were arranged, and rigorous quality and consistency checks were adopted (20% were checked). Each interview took ∼25 min to complete. Among the 816 valid telephone numbers sampled, 500 participants completed the interview (response rate: 61.3%). Participants of the online survey were sampled from a panel of residents' database. The survey panel was formed previously by responding to the invitation text messages sent to all the mobile phone numbers generated through the Numbering Plan for Telecommunication Services in Hong Kong. The numbers were provided by the Office of the Communications Authority, which covered over 90% of the Hong Kong residents. A total of 100,079 residents from diverse socio-economic background joined the panel. The survey agency adopted stratified random sampling by sex and age distribution and invited a random sample of panelist using text messages. Participants self-administered the questionnaire via the Web-CATI. Of the 1,623 panelists invited, 1,001 completed the survey (response rate of 61.7%). We collected information related to sociodemographic characteristics (sex, age, and education attainment), COVID-19 diagnosis (at any point in time) or were in close contact with confirmed cases (no/yes), self-rated health ("excellent, " "very good, " "good, " "fair, " or "poor") (23), diagnosed with chronic disease, such as hypertension, heart disease, or diabetes (none/any), and health-related behaviors which included tobacco smoking (never smoked, ex-smoker, or current smoker) and alcohol drinking (non-drinker, social drinker, monthly drinker, or daily drinker). Shortage of preventive materials, including facemasks, alcohol-based hand sanitizers, and cleaning products (e.g., bleach), for the participants and their family members to use (at a household level) in the coming month was reported (no/yes). To assess perceptions of the COVID-19 pandemic, the participants were asked to what extent they agreed ("strongly disagree, " "disagree, " "neutral, " "agree, " and "strongly agree") that (1) "I feel that I am at risk of getting infected in the coming 6 months;" (2) "I think people around me pose a threat to me;" (3) "I feel the outbreak greatly affected my daily life;" (4) "I feel difficult to study/work at home;" and (5) "I feel inefficient studying/working at home." Homemakers and retirees were not asked about study/work at home. Reduction in income since the outbreak (no change, small reduction, reduction by half, larger reduction, or unemployed) were reported by participants who were economically active; while students, homemakers, and retirees were not asked the question. Stress levels were assessed using the 4-item Perceived Stress Scale (PSS-4) (24) . The PSS-4 measured the frequency of perceived ability to cope with existing stressors (two items) and lack of control and affective reactions (two items) in the preceding month (from early-March to mid-April 2020) on a Likert scale ranging from 0 (never) to 4 (very often). A higher total score indicates a higher perceived stress level (0-16). The Chinese version of PSS-4 has been validated in Hong Kong adults (25) . The internal consistency of PSS-4 was satisfactory (Cronbach's alpha = 0.67) in our sample. Anxiety and depressive symptoms were assessed using the 4-item Patient Health Questionnaire (PHQ-4) (26, 27) . The scale had two core criteria for generalized anxiety disorder that screened for social panic and anxiety disorders (2-item General Anxiety Disorder, GAD-2), and two core diagnostic criteria for major depression disorders (2-item Patient Health Questionnaire, PHQ-2). Each item asked the frequency of anxiety/depressive symptoms in the past 2 weeks (from late-March to mid-April 2020) on a Likert scale ranging from 0 (not at all) to 3 (nearly every day). Subscales of the GAD-2 and PHQ-2 total scores ranged from 0 to 6 and a score ≥3 indicated the presence of anxiety and depressive symptoms, respectively. We previously validated the PHQ-2 in Hong Kong population (28) . The internal consistency of GAD-2 (Cronbach's alpha = 0.81) and PHQ-2 (Cronbach's alpha = 0.81) were good in this study. All data were weighted according to provisional figures obtained from the Census and Statistics Department on the sex, age, and education attainment distributions of Hong Kong general population in 2016. T-tests and χ 2 -tests were used to compare sociodemographic characteristics and other variables between the landline telephone and online self-administered samples. Multivariable regression was used to compare the stress, anxiety, and depressive symptoms by sociodemographic characteristics, COVID-19 cases, self-rated health, chronic disease, smoking, and drinking. The association of mental health symptoms with the shortage of preventive material, perceptions of the outbreak, and income change since the outbreak were separately analyzed by multivariable linear (for PSS-4) and logistic (for GAD-2 and PHQ-2) regression, adjusted for sex, age, and educational attainment (model 1). In model 2, we additionally included selfrated health, chronic disease, smoking, and alcohol drinking as covariates. We found that adopting personal protection [(1) wearing a surgical mask, (2) washing hands with alcohol-based sanitizers, (3) using alcohol to clean daily necessities, and (4) adding water to household drainage system, each reported with no/yes] and social distancing measures (e.g., avoiding crowded places, avoiding social gathering, keeping 1.5 m distance from others in public, and score ranging from 0 to 10 with higher scores indicating higher perceived compliance) were associated with lower risks of mental health symptoms in our previous report (11) . In addition, we adjusted for these factors in model 3. All analysis was performed by using the STATA version/MP 15.1 (StataCorp., USA). There were no significant differences in sociodemographic characteristics and health-related factors between participants from the landline (n = 500) and online (n = 1,001) samples Table 2 presents the shortage in preventive materials including facemasks (20.8%), alcohol-based hand sanitizers (13.9%), and cleaning products (7.3%). Of the 1,501 participants, 349 (24.1%) reported shortage in at least one type of preventive material. Participants, generally, reported that they did not believe that they were at risk of getting infected in the following 6 months (mean 2.2, SD 1.1), but agreed with the perception of worry that the people around posed a threat to them (mean 3.6, SD 0.9) and the outbreak had greatly affected their daily life (mean 3.7, SD 0.9). The mean score of perceived difficult to and less efficient studying or working at home was 3.1 (SD 1.1) and 3.2 (SD 1.1), respectively. Of the participants, 59.3% (626/1,043) experienced different levels of income reduction and 6.1% had become unemployed since the outbreak. Table 3 shows that older age and higher education attainment were associated with lower stress score (all P for trend, which tested for the dose-response effect <0.001). Confirmed cases or close contacts with confirmed cases were associated with more anxiety (adjusted odds ratio 1.47, 95% CI 0.66, 3.28) and depressive (adjusted odds ratio 1.86, 95% CI 0.86, 4.04) symptoms. Poor self-rated health was associated with a greater stress score (adjusted β 3.61, 95% CI 2.66, 4.57) and more anxiety (adjusted odds ratio 10.71, 95% CI 3.48, 33.00) and depressive symptoms (adjusted odds ratio 11.76, 95% CI 3.78, 36.59). Participants with chronic diseases had a greater stress score (adjusted β 0.50, 95% CI 0.17, 0.85). Currently smoking and drinking daily were also associated with a greater stress score and more anxiety and depression symptoms (all P < 0.01). Table 4 shows that stress score and anxiety and depressive symptoms were higher among those who had a shortage in preventive materials, adjusted for sociodemographic factors (all P < 0.001). Dose-response associations were found among the number of types of materials in shortage and stress, anxiety, and depression symptoms (all P for trend <0.001). Negative perceptions of the outbreak (all P < 0.001) and reduction of income since the outbreak (all P for trend <0.001) were all significantly associated with stress, anxiety, and depression symptoms. The stress levels (adjusted β 1.69, 95% CI 0.14, 2.24), and risks for anxiety (adjusted odds ratio 5.94, 95% CI 2.93, 12.04) and depressive (adjusted odds ratio 3.94, 95% CI 2.03, 7.66) symptoms were largely increased among those who had become unemployed during the pandemic. These associations were similar after we additionally adjusted for selfrated health, chronic disease, smoking and alcohol consumption behaviors, or personal protection and social distancing measures (Supplementary Table) . Our results provide the first evidence that shortage of preventive materials (facemasks, alcohol-based hand sanitizers, and other cleaning products) and negative perceptions of the outbreak are associated with stress and mental health (anxiety and depressive) symptoms. People experiencing financial loss and unemployment have more mental health symptoms after adjusting for sociodemographic and health-related factors. Our findings are consistent with previous studies that reported mental distress levels were influenced by the availability of medical resources, locally (10) . Shortage of preventive materials was associated with higher risks for mental health symptoms. Since the initial outbreak in Wuhan, China, the fear and worry for infection led to early and voluntary mass masking in Hong Kong (5) . The perceived risks of supply disruption and mass hoarding could exacerbate the stress and anxiety from personal insecurity and an uncertain future (29, 30) . The situation could be worse in other countries or regions with unstable material supplies and serious outbreaks. With lower internet access and literacy and inflated prices, the OR, odds ratio. P for trend: test of the dose-response effect in the association. a Each mutually adjusted for other variables above. *P < 0.05, **P < 0.01, ***P < 0.001. elderly and poor experience more frustration in purchasing material (31, 32) . Lack of facemasks was found in 9.8% of the participants aged 18-29 but increased to 38.4% in those aged 70 years and above. More participants who had become unemployed reported lack of facemasks than those who were employed (40.0 vs. 9.8%). Accessibility to preventive materials and health service resources for the most vulnerable should be further strengthened and improved. Regulating the supply chain, suppressing misinformation that exacerbates panic buying and hoarding, and ensuring the supply of protective equipment to the most vulnerable groups may promote community prevention and improve mental health during the pandemic (32) . As expected, those who had negative perceptions of the outbreak, including perceived risks of getting infected, worry that people around may pose a threat to oneself, and perceived great impact on daily life, were more likely to experience mental distress during the pandemic. With schools suspended and many companies and organizations changing to work from home, perceived difficulty and inefficiency of studying or working at home would add extra stress. A previous study in mainland China showed that those who worked at home had a higher risk of anxiety and depressive symptoms when compared with those who had returned to their workplace (2) . Since the pandemic, two-thirds of our participants had incurred financial loss. Consistent with the literature (33, 34) , we *P < 0.05, ** P < 0.01, ***P < 0.001. Frontiers in Psychiatry | www.frontiersin.org found that financial loss and unemployment since the outbreak were strongly and independently associated with increased mental health symptoms. Epicenters with growing outbreaks and continuous infection control policies may witness a delayed return of daily routine and experience larger impact. More mental health symptoms in participants with poor selfrated health and a comorbid chronic disease was likely due to fear of COVID-19 and interruption or delay in treatment. Similarly, smokers and drinkers had more mental health symptoms. Smoking was related to the expression of ACE2 (receptor for SARS-CoV-2) for a higher COVID-19 severity (35) , and alcohol drinking was linked to the COVID-19 cluster outbreaks in bars and a potential risk factor for disease severity and ICU admission (36) . Older adults, however, reported less stress possibly attributable to less work-related essential tasks and daily life disruption. The associations we identified support the need for specific psychological assistance for those with negative perceptions, financial loss, and unemployment during the pandemic. Accelerating the local infection control and facilitating the restructuring of daily, study, and work-life is needed to enhance mental well-being. Social and financial support for the most underprivileged people is urgently needed (37) . This study had several limitations. First, causal relations cannot be confirmed in cross-sectional studies. Second, unmeasured, or residual confounding could not be excluded. Third, use of self-reported measures is subject to recall errors. Clinical psychological screening may require rigorous measures but are currently hard to achieve. Fourth, non-response bias could not be excluded. To improve represntativeness, we weighted the data by sex, age, and education of the general population. The estimates computed by using weighted and unweighted data were also very similar. Finally, our study only provided a snapshot of immediate mental health responses following the COVID-19 outbreak in Hong Kong, which may evolve with the development of the pandemic, balance of the supply system, and the public health interventions. Longitudinal mental health impact on the general population and vulnerable groups needs further investigation. Shortage of preventive materials, negative perceptions, financial loss, and unemployment were prevalent during the outbreak and found to be associated with higher stress and more anxiety and depressive symptoms. Further research and urgent actions are warranted to relieve stress and promote mental health, targeting the many risk factors identified by our study. The original contributions presented in the study are included in the article/Supplementary Material, further inquiries can be directed to the corresponding author. The studies involving human participants were reviewed and approved by The Institutional Review Board (IRB) of the University of Hong Kong/Hospital Authority Hong Kong West Cluster. The patients/participants provided their written informed consent to participate in this study. SZ, JW, and MW conceived and designed the study. SZ and MW did the statistical analysis, wrote the first draft of the article, accountable for the accuracy, and integrity of the study. JW and MW supervised the study. All authors interpreted the data, participated in the critical review of the report, and provided final approval for publication submission. 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Our study follows the code of ethics set by the Declaration of Helsinki and all its amendments. The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fpsyt. 2021.617397/full#supplementary-material