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Mental Health of Medical Workers in Japan during COVID-19: Relationships with
Loneliness, Hope and Self-Compassion.
Citation
Kotera, Y., Ozaki, A., Miyatake, H., Tsunetoshi, C., Nishikawa, Y. & Tanimoto, T. (2021).
Mental health of medical workers in Japan during COVID-19: Relationships with loneliness,
hope and self-compassion. Current Psychology.
2
Mental Health of Medical Workers in Japan during COVID-19: Relationships with
Loneliness, Hope and Self-Compassion.
Abstract
The current pandemic of the coronavirus disease 2019 (COVID-19) has negatively impacted
medical workers’ mental health in many countries including Japan. Although research
identified poor mental health of medical workers in COVID-19, protective factors for their
mental health remain to be appraised. Accordingly, this study aimed to investigate
relationships between mental health problems, loneliness, hope and self-compassion among
Japanese medical workers, and compare with the general population. Online self-report
measures regarding those four constructs were completed by 142 medical workers and 138
individuals in the general population. T-tests and multiple regression analysis were
performed. Medical workers had higher levels of mental health problems and loneliness, and
lower levels of hope and self-compassion than the general population. Loneliness was the
strongest predictor of mental health problems in the medical workers. Findings suggest that
Japanese medical workplaces may benefit from targeting workplace loneliness to prevent
mental health problems among the medical staff.
Keywords: Japan; medical workers; mental health; loneliness; COVID-19
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Introduction
Poor psychological status among medical workers can limit the quality and quantity
of the medical workforce, leading to poor clinical outcomes of patients. This is particularly
relevant to the current pandemic of the novel coronavirus disease 2019 (COVID-19), as it can
cause negative impacts on mental health of medical workers (Matsuo et al., 2020; Moreno et
al., 2020; Spoorthy, 2020). Considering strong stigma attached to mental illnesses among
Japanese medical professionals (Ando et al., 2013), directly engaging with mental health
problems may not be effective as it can stimulate their stigma (AUTHOR, 2020a). Previous
studies elucidated the prevalence and levels of mental distress in medical workers during
COVID-19 (Matsuo et al., 2020; Moreno et al., 2020; Spoorthy, 2020), however protective
factors for their mental health were not evaluated. Healthful factors of mental health need to
be appraised to identify effective interventions (Choi et al., 2020). Accordingly, we examined
the relationships between mental health problems (depression and anxiety), loneliness
(feeling alienated from others; Sekhon & Srivastava, 2019), hope (positive motivational
construct, helpful during a crisis; Bernardo & Mendoza, 2020), and self-compassion
(kindness towards oneself, associated with wellbeing; Sinclair et al., 2017) during the
COVID-19 pandemic in medical workers in Japan to appraise protective factors of mental
health that are unique to this population, and suggest effective approaches.
Methods
We aimed to contextualise the psychological status of medical workers by comparing
with that of the general population in Japan. Online survey was distributed to Facebook
groups formed by medical workers and the general population in June 2020, to which
opportunity samples of 160 medical workers and 164 individuals in the general population
agreed to participate. Participants had to (i) be 18 years old or older, (ii) be living in Japan at
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the time of the study, and (iii) have at least three years of experience living in Japan. To
reduce the workload of participants, following four short scales were included in the survey:
The Patient Health Questionnaire-4 (Löwe et al., 2010), Three-Item Loneliness Scale
(Hughes et al., 2004), Adult State Hope Scale (Snyder et al., 1996), and Self-Compassion
Scale-Short Form (Raes et al., 2011). Of the agreed participants, 142 medical workers (28
doctors, 34 nurses, 29 pharmacists, 27 rehabilitation workers, and the remaining 24 included
social workers and radiographers) and 138 individuals from the general population (85 full-
time employees, 29 self-employed workers, 11 part-timers, and the remaining 13 included
unemployed and homemakers) completed the survey. Both groups satisfied the required
sample size per as power calculation (119: Effect size f2 = 0.15, α = 0.05, Power = 0.95; (Faul
et al., 2009). Once data was screened for outliers and normalities, t-tests and multiple
regression analysis were conducted. Ethical approval was obtained from the university
research ethics committee. This study followed the Strengthening the Reporting of
Observational Studies in Epidemiology (STROBE) reporting guideline.
Results
Our t-tests revealed that medical workers had high levels of mental health problems (p
= 0.004, t = 2.88) and loneliness (p = 0.043, t = 2.04), and low levels of hope (p = 0.010, t = -
2.62) and self-compassion (p = 0.004, t = -2.89), relative to the general population.
[Please insert Table 1 here]
In multiple regression, first, gender and age were entered to adjust for their effects
(Step 1), then, loneliness, hope and self-compassion scores were entered (Step 2).
Multicollinearity was of no concern (Variance Inflation Factors < 10). Loneliness (p < 0.001,
β = 0.39), hope (p < 0.001, β = -0.28) and self-compassion (p = 0.007, β = -0.22) were
significant predictors of mental health problems in medical workers, where loneliness was the
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strongest, and self-compassion was the weakest predictor; whereas hope was the strongest in
the general population (p = 0.003, β = -0.27) (Table 1). The three predictors predicted a
greater variance of mental health problems in medical workers than in the general population
(44% > 30%).
[Please insert Table 2 here]
Discussion
During the COVID-19 pandemic in Japan, our analyses identified (i) poor mental
health and weakened psychological resources of medical staff, and (ii) the importance of
loneliness, hope and self-compassion to their mental health, particularly the strongest impact
of loneliness. These findings suggest that the medical workforce in Japan can benefit from
targeting loneliness in the workplace. As increasingly uncovered in occupational psychology,
workplace loneliness is associated with limited job performance (Ozcelik & Barsade, 2018).
Among the loneliness interventions, re-appraising maladaptive social cognitions of lonelier
workers, conducted regularly, was found most effective (Masi et al., 2011), translating self-
criticism into self-compassion. A caution is required as a concept of loneliness differs
between individualistic and collective cultures, and these studies were primarily conducted in
the Western individualistic contexts, different from the Japanese collectivism (Heu et al.,
2019). Moreover, our study used (a) self-report measures, susceptible to response biases
(AUTHOR, 2020b) and (b) a cross-sectional design, unable to elucidate causality of the
variables—longitudinal studies should be conducted. Still, our findings would help identify
practical interventions to be employed by Japanese medical teams during COVID-19. As the
third wave has arrived in Japan in November 2020 (Kami, 2020), Japanese medical workers
need to protect their mental health to continue to offer quality care for ever-increasing
patients suffering from this fatal disease.
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Table 1. Participants Characteristics and Psychological Variables
Medical Workers (n=142)
General Population (n=138)
M
SD
M
SD
Characteristics
Gender
F: 73% (n=104), M= 27% (n=38)
F: 61% (n=84), M: 39% (n=54)
Age
39.90
12.10
46.39**
10.35
Job Role /
Employment Status
Doctors
28
Full-Time Employees
85
Nurses
34
Part-Timers
11
Pharmacists
29
Self-Employed incl.
Employers
29
Rehabilitation Workers
27
Homemakers
5
Social Workers
5
Unemployed
2
Others incl. Nutritionists,
Radiographers
19
Others incl. Students
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Psychological Variables
Mental Health Problems
(measured by PHQ-4)
3.27**
2.78
2.37
2.31
Loneliness
4.73*
1.7
4.33
1.56
Hope
29.85
8.46
32.35**
7.82
Self-Compassion
3.13
0.58
3.34**
0.61
*p<.05, **p<.01 Significant difference between the two groups (noted on the higher value).
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Table 2. Multiple Regression Analysis for Mental Health Problems
Medical Workers
General Population
B
SEB
β
95.0% CI for B
B
SEB
β
95.0% CI for B
Step 1
Lower
Upper
Lower
Upper
Gender
0.03
0.17
0.02
-0.31
0.37
-0.18
0.14
-0.11
-0.45
0.09
Age
-0.01
0.01
-0.13
-0.02
0.00
-0.01
0.01
-0.12
-0.02
0.00
Adj. R2
0.30%
1%
Step 2
Gender
0.09
0.13
0.05
-0.17
0.35
-0.11
0.12
-0.07
-0.34
0.12
Age
0.01
0.01
0.09
0.00
0.02
0.00
0.01
-0.03
-0.02
0.01
Loneliness
0.92
0.17
0.39***
0.58
1.25
0.50
0.25
0.20*
0.01
0.99
Hope
-0.31
0.08
-0.28***
-0.47
-0.14
-0.33
0.11
-0.27**
-0.54
-0.11
Self-Compassion
-1.17
0.42
-0.22**
-2.01
-0.33
-1.06
0.49
-0.21*
-2.04
-0.09
△"Adj. R2
44%
30%
Outcome variable = Mental Health Problems. B = Unstandardized Coefficients, SEB = Standard Error of the
Coefficient, β = Standardized Coefficients. *p < 0.05; **p < 0.01; ***p < 0.001