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Original research
Resilience mediates the association between alexithymia and stress in Chinese medical students during the COVID-19 pandemic
  1. Yuqun Zhang1,
  2. Tianyu Wang2,
  3. Shengji Jin1,
  4. Heng Zhang1,
  5. Lixia Chen1 and
  6. Shizheng Du1
  1. 1 School of Nursing, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
  2. 2 Department of Psychosomatics and Psychiatry, Southeast University, Nanjing, Jiangsu, China
  1. Correspondence to Dr Yuqun Zhang; zyq_hlxy2017{at}njucm.edu.cn

Abstract

Background Evidence indicates that medical students have had high rates of mental health problems, especially during the COVID-19 pandemic, which could be affected by alexithymia—a marked dysfunction in emotional awareness, social attachment and interpersonal relationships—and stress. However, psychological resilience might relieve alexithymia and stress levels.

Aims This study aimed to investigate the role of resilience in alexithymia and stress in medical students.

Methods A total of 470 medical students completed online and offline surveys, including the Toronto Alexithymia Scale-20 (TAS-20), the Connor-Davidson Resilience Scale (CD-RISC) and the College Student Stress Questionnaire (CSSQ). The data of five participants were excluded because of a lack of integrity. Mann-Whitney U test or Kruskal-Wallis test was used to compare group differences in the CD-RISC scores among categorical variables. Spearman correlation analysis was employed to evaluate the associations between resilience and alexithymia and between resilience and stress. Mediation analysis was used to test the mediating effect of resilience between alexithymia and stress.

Results Of the medical students considered in the analysis, 382 (81.28%) were female and 88 (18.72%) were male. There was a significant negative correlation between the TAS-20 scores and the total and subtotal CD-RISC scores (p<0.001). The CSSQ scores also significantly negatively correlated with the total and subtotal CD-RISC scores (p<0.001). Resilience mediated the relationship between alexithymia and stress (total effect=1.044 7, p<0.001). The indirect effect of alexithymia significantly impacted stress through resilience (effect=0.167 0, 95% CI: 0.069 to 0.281).

Conclusions Our findings suggest that resilience might effectively reduce alexithymia and stress. They also contributed to a better understanding of the mediating effects of resilience on alexithymia and stress during the COVID-19 pandemic. The evidence from these results encourages universities to focus on improving students’ resilience.

  • resilience, psychological
  • mental health
  • COVID-19
  • psychosomatic medicine

Data availability statement

Data are available on reasonable request.

http://creativecommons.org/licenses/by-nc/4.0/

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

https://doi.org/10.1136/gpsych-2022-100926

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    WHAT IS ALREADY KNOWN ON THIS TOPIC

    • Medical students have been shown to have high rates of negative mental health symptoms. The COVID-19 pandemic has magnified the stressors these students usually encounter during their studies. Alexithymia, a personality trait that negatively affects mental health, appears to increase perceived stress. Resilience has been found to play a positive role in decreasing stress and alexithymia. However, how resilience has influenced medical students’ alexithymia and stress during the recent pandemic remains unclear.

    WHAT THIS STUDY ADDS

    • This study explored the relationships between resilience and alexithymia and resilience and stress. Mediation analysis was used to investigate how resilience mediates the associations between alexithymia and stress.

    HOW THIS STUDY MIGHT AFFECT RESEARCH, PRACTICE OR POLICY

    • As the COVID-19 pandemic continues, universities should pay close attention to students with pronounced alexithymia because their perceptions of stress may be severe. At the same time, universities could enhance all students’ resilience through specific interventions, such as well-being and cognitive behaviour therapies.

    Introduction

    Evidence indicates that medical students have high rates of psychiatric disorders and mental stress worldwide and are at high risk for suicidal ideation.1 Burnout of medical students increases after clinical rotations in which they are exposed to patients with debilitating illnesses, life-threatening diseases and death.2 Medical students also experience a variety of other stressors, such as examinations, living away from family and financial hardships—all making them more prone to mental disorders.3 Not surprisingly, the high prevalence of emotional disorders among medical students may increase their risk for other problems, such as low levels of life satisfaction, school incompletion and suicide.

    Starting soon after the onset of the COVID-19 pandemic, universities closed their doors, and digital learning replaced in-person lectures. However, the clinical aspects of medical training are ill-suited for E-learning. Unfortunately, the pandemic continuously disrupted medical education and training throughout this period.4 An epidemiological study of 746 217 college students showed that acute stress, anxiety and depressive symptoms were prevalent during the COVID-19 pandemic.5 Moreover, COVID-related psychological stress in medical students was found to significantly increase the risk of negative impact on their health, academic performance, professional identity and future medical service quality.6

    A novel study suggested that students who experienced psychological problems during the COVID-19 pandemic would more likely be affected by deficiencies in emotional identification and expression or, in other words, alexithymia.7 The disorder is a multifaceted personality construct, including difficulties identifying and describing feelings and poor externally-oriented thinking,8 that is more common in younger populations (24.1%), especially among college students.9

    Furthermore, alexithymia is a sign of negative emotions and a significant risk factor for other medical and psychiatric problems.10 Thus, individuals with alexithymia are prone to reporting mental health–related concerns. In our previous research, nursing students showed significantly positive correlations between alexithymia and health anxiety.10 However, during the COVID-19 pandemic, the relationships between alexithymia and different aspects of stress in medical students were not evident and, thus, are worthy of attention.

    A previous study found resilience plays a positive role in the mental health of medical students.11 For example, students with higher resilience scores exhibited better adaptive coping strategies when facing academic stress.11 Nevertheless, compared with non-medical students, medical students may have lower resilience levels.12 Many factors can influence students’ resilience, such as workplace and training stress, interpersonal relationships and alexithymia.13 14 Resilience and positive coping have also been shown to be protective factors for developing stress symptoms and decreasing the risks of pandemic-related distress.15 Therefore, we hypothesised that resilience could be a mediator for reducing stress and alexithymia in medical students. However, more research is needed to determine the relationships among resilience, stress and alexithymia, which is the aim of this study.

    Methods

    Procedures and participants

    This cross-sectional study conducted from 18 March to 21 April 2021 was based on online and offline surveys. College students in China were invited to participate in this survey via the Wenjuanxing platform (https://www.wjx.cn/report/110598159.aspx), distributed on the Internet, WeChat and the Tencent QQ platform, or by completing a printed version of the scales. Students who had failed to complete the online survey received a notification about unanswered questions; the survey could be submitted online only after all questions were answered. Online and offline questionnaires were checked to reject invalid surveys.

    In total, 475 students (18 to 26 years old) volunteered to participate in this survey; five incomplete questionnaires were rejected. Gender, academic performance (ie, good, average or poor), home location (ie, city/town or countryside), only-child family (ie, yes or no) and family income (ie, high, average or low) were collected via ad hoc questions. Students were also asked questions about alexithymia, resilience and stress.

    Measurements

    Clinimetric evaluation of alexithymia

    Alexithymia assessment was performed using the 20-item Toronto Alexithymia Scale (TAS-20), a 5-point Likert-type questionnaire that assesses the degree of difficulty in identifying and describing emotions. TAS-20 has three factors, including difficulty identifying feelings (DIF), difficulty describing feelings to others (DDF) and an externally oriented style of thinking (EOT).8 The Chinese version of TAS-20 has fair internal consistency (Cronbach’s α=0.645, 0.630 and 0.581, respectively) and test–retest reliability (r=0.782, 0.687 and 0.893, respectively).8

    Clinimetric assessment of resilience

    A clinimetric evaluation of resilience was determined by the Connor-Davidson Resilience Scale (CD-RISC), a 5-point scale (0–4) with higher scores reflecting greater resilience.16 The Chinese version of CD-RISC is a 25-item instrument with three factors (ie, tenacity, strength and optimism), which shows a good reliability coefficient (0.91).17 Tenacity encompasses 13 items (ie, items 11–23) describing an individual’s equanimity, promptness, perseverance, and sense of control when facing situations of hardship and challenge. Strength includes eight items (ie, items 1, 5, 7–10, 24 and 25) assessing an individual’s capacity to recover and become strong after setbacks and overcome past experiences. The optimism factor consists of items 2, 3, 4 and 6, which measure an individual’s confidence in resisting adverse events.

    Stress assessment

    The students’ stress was assessed by the College Student Stress Questionnaire (CSSQ), a 30-item scale.18 CSSQ measures seven aspects of stress (ie, seven subscales): economy, adaption, love, self-abasement, interpersonal relationships, employment and academic performance. Each item encompasses five statements, rated from ‘no stress’ (1) to ‘extreme stress’ (5), with total scores ranging from 0 to 150. The Cronbach’s α coefficient of CSSQ is 0.959, showing a good reliability.

    Statistical analysis

    A Mann-Whitney U test or a Kruskal-Wallis test was used to compare group differences in the CD-RISC scores among the categorical variables. Spearman correlation analysis was employed to evaluate the associations between resilience and alexithymia and between resilience and stress (Bonferroni correction).

    PROCESS was applied to test the mediating effect of resilience between alexithymia and stress. We used an exploratory parallel multiple mediator model to evaluate the associations of the three factors of CD-RISC between alexithymia and stress.

    Results

    Demographic information of students

    Table 1 shows the demographics of students. Approximately 81.28% of the students were female, and 64.68% indicated average academic performance. About 45.96% of the students came from the countryside or 53.19% came from only-child families. In addition, 72.34% of students came from homes with an average family income, and 32.98% were first-year college students.

    View this table:
    Table 1

    Demographics of college students in the survey

    Comparisons of resilience between different groups

    In this study, we divided the students into various groups according to demographic information. As shown in table 2, no significant differences in the total CD-RISC and its subscales were found between different genders, academic performance, home location, only-child family status, family income and college grade level (all p>0.05).

    View this table:
    Table 2

    Comparisons of resilience in college students by demographics

    Correlations of resilience, alexithymia and stress

    Figure 1 illustrates significant associations (uncorrected) between CD-RISC and other scales. CD-RISC (r=−0.232, p<0.001, figure 1A), tenacity (r=−0.195, p<0.001, figure 1B), self-improvement (r=−0.254, p<0.001, figure 1C) and optimism (r=−0.223, p<0.001, figure 1D) were all negatively correlated with TAS-20, and also negatively correlated with stress (r=−0.447, p<0.001; r=−0.366, p<0.001; r=−0.439, p<0.001; r=−0.428, p<0.001, respectively).

    Figure 1
    Figure 1

    Correlations between (A) CD-RISC and TAS-20, stress, respectively; (B) tenacity and TAS-20, stress; (C) self-improvement and TAS-20, stress; (D) optimism and TAS-20, stress, respectively. CD-RISC, Connor-Davidson Resilience Scale; TAS-20, Toronto Alexithymia Scale-20.

    Mediating effect of resilience between alexithymia and stress

    The current study found that alexithymia influenced stress in direct and indirect ways (see figure 2).

    Figure 2
    Figure 2

    Unstandardised regression coefficients for the relationship between alexithymia and stress as mediated by resilience. a, b, c and c′ are standardised path coefficients.

    The direct effect of alexithymia on stress was significant when controlling for resilience (c’=0.877 7; 95% CI: 0.697 to 1.058). Meanwhile, the indirect effect also showed statistical significance (effect=0.167 0, 95% CI: 0.069 to 0.281). Moreover, the total effect of alexithymia on stress was 1.044 7 (c=1.044 7, 95% CI: 0.858 to 1.231).

    A multiple mediator model test was employed to explain which aspect of resilience could mediate alexithymia and stress. A bootstrapped 95% CI confirmed that the indirect effect of alexithymia had an impact of 0.167 0 that was produced by resilience as a mediator on stress (95% CI: 0.069 to 0.281). Alexithymia significantly affected all three factors of resilience (all p<0.001, table 3). However, only two factors of resilience (ie, self-improvement and optimism) significantly affected stress. For the indirect paths, alexithymia could affect stress through self-improvement and optimism (ie, the CI did not straddle 0). The indirect pathway via tenacity had no statistical significance (95% CI: −0.077 to 0.052). Therefore, self-improvement and optimism mediate the relationship between alexithymia and stress in medical students.

    View this table:
    Table 3

    Mediating effect of resilience subscales between alexithymia and stress

    Discussion

    Main findings

    As the relationship between alexithymia and stress in medical students during the COVID-19 pandemic has been largely unexplored, this study examined whether resilience can explain this association. It was the first study to investigate the role of resilience as a mediator between alexithymia and stress in medical students during the recent pandemic lockdown. The current study indicated that students who reported stress or alexithymia exhibited lower resilience. It was found that tenacity, self-improvement and optimism were strongly negatively correlated with stress and alexithymia. Mediation analysis revealed that resilience was a mediator between alexithymia and stress.

    A moderate correlation was found between alexithymia and resilience total and subscale scores. This finding was consistent with several previous studies that explored the relationship between alexithymia and resilience in general populations,14 depressive patients19 and patients after kidney transplantation.20 The negative correlation between alexithymia and resilience is very easy to understand, especially during the COVID-19 pandemic. Alexithymia is a defence mechanism when an individual experiences a traumatic event, such as the COVID-19 outbreak and the ensuing lockdown. Resilience is the ability to withstand and recover from mental hardship effectively.21 However, individuals with higher alexithymia use avoidance as a coping strategy rather than problem-solving and positive thinking, and they have less social support.22 For example, emotion-focused coping was more common than problem-focused coping in individuals with alexithymia, as it aimed to regulate the emotional experience of the stressful event.23 As a matter of fact, positive coping strategies are to some extent consistent with resilience, both of which are positive attempts when people face unpleasant situations. For example, individuals with alexithymia might find it more challenging to cope with stressful events and find it more difficult to use positive coping strategies. Furthermore, they will more likely feel less emotional support from families or friends.

    We found negative correlations between resilience and stress in medical students; similar results had been supported by other studies about students.21 24 One epidemiological investigation found that the number of students accessing university counselling services grew by 50% from 2010 to 2015.24 To some degree, the lowered resilience of students could explain this increase in help-seeking, as it could also affect their academic performance, sense of coherence and quality of life.13 Seemingly, the COVID-19 pandemic has made the negative relationship between resilience and stress stronger. Medical students’ stressors, such as class interruptions, concerns about personal or family health, and social isolation from peers, resulted in undesirable changes in behaviour, difficulty concentrating and increased use of negative coping strategies.25 This implies that students may have had higher levels of resilience before the pandemic.

    Our finding that resilience was a mediator between alexithymia and stress supports results from previous studies that reported resilience mediated the associations between interpersonal relationships and depression,26 as well as loneliness and depression.27 In this study, the first critical path in the mediation model was that alexithymia was a forerunner to severe stress, consistent with findings from a cross-sectional study indicating that alexithymia was the strongest predictor of social stress.28 As evidenced, individuals with high alexithymia exhibited elevated subjective negative affect.29 Furthermore, negative emotions resulted in various types of stress, including impaired interpersonal relationships, academic performance and romantic relationships.30 During the COVID-19 pandemic, limited social activity may have passively increased students’ perceived stress, especially for those with high alexithymia. Another important path in this mediation model was resilience indirectly accounted for the link between alexithymia and stress. Although serious alexithymia could increase medical students’ pressure, resilience was found to effectively relieve it, as supported by Romano et al.30 According to the authors, resilience mediated the relationship between alexithymia and academic burnout. Therefore, our study indicated that resilience played a vital role in relieving stress and alexithymia in medical students.

    Limitations

    Our study has a few limitations. First, while the sample size studied was relatively large, the complex relationships between resilience, alexithymia and stress warrant larger sample sizes for study. Second, all data were obtained through self-report scales, which could induce response bias; the associations between variables may be under-or-over-estimated by participants. Furthermore, the generalisation of our results should be taken with caution because the results obtained from our study sample may be not applicable to other populations.

    Implications

    Although we cannot make a definitive conclusion on the causal links based on the present investigation, our findings showed that resilience could relieve the negative effect of alexithymia on stress in medical students during the COVID-19 pandemic. These results provide helpful evidence for universities to attend to students’ psychological resilience. Psychotherapy is one means of improving levels of resilience.

    Data availability statement

    Data are available on reasonable request.

    Ethics statements

    Patient consent for publication

    Ethics approval

    This study involves human participants and was approved by the recommendations of the ethics committee (Zhongda Hospital, Southeast University, Nanjing, China, No. 2021ZDSYLL142-Y01) with written informed consent from all subjects. It is in accordance with the declaration of Helsinki. Participants gave informed consent to participate in the study before taking part.

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    Yuqun Zhang, graduated from the School of Medicine at Southeast University in Nanjing, China in June 2017 with a PhD in neurology. She has worked as a lecturer at the Nanjing University of Chinese Medicine in the School of Nursing in China since 2017. She has authored more than 40 refereed research papers and presided over five research projects, including the National Natural Science Foundation of China, the Qinglan Project from Jiangsu Province, the Natural Science Foundation of Jiangsu Province, the Natural Science Foundation of Jiangsu Higher Education Institutions and Philosophy, and the Social Science Foundation of Jiangsu Higher Education Institutions in China. She was awarded a second prize of the Science and Technology Progress Award of the Ministry of Education and a first prize of Jiangsu Province Medical New Technology Introduction Award. In addition, she has contributed to three books and two sets of teaching materials for undergraduate medical students. Her main research interests include neuroimaging mechanisms of postpartum depression and the psychotherapeutic mechanisms of cognitive behaviour therapy for psychosomatic disorders.


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    Footnotes

    • YZ and TW contributed equally.

    • Contributors YZ as the guarantor, also designed this study, analysed data and wrote the manuscript. TW collected the data and wrote the manuscript. SJ, HZ, LC and SD modified the manuscript.

    • Funding This work was funded by Qing Lan Project of Jiangsu Higher Education Institutions, National Natural Science Foundation of China (grant number 82001426) and School-based Youth Project Funding (grant number NZY82001426).

    • Competing interests None declared.

    • Provenance and peer review Not commissioned; externally peer reviewed.