The Association Between Self-Reported Long COVID Symptoms and COVID-19 Conspiracy Theories in Jordan, Kuwait, among Other Arab Countries

1. Introduction

The COVID-19 pandemic continues to impact daily life despite effective containment strategies [1]. COVID-19 consequences remain substantial due to the emergence of variants of concern, waning immunity over time, and the existence of unvaccinated demographic groups [2]. Additionally, COVID-19 has profoundly affected economic stability and psychosocial dynamics worldwide [3,4].

A significant consequence of the COVID-19 pandemic is the emergence of “long COVID”, which is a condition characterized by persistent symptoms that linger beyond the acute phase of SARS-CoV-2 infection [5,6,7,8]. This phenomenon presents a complex challenge for ongoing public health initiatives and healthcare management, complicated by its broadly defined symptoms and variable duration [7,9,10,11,12,13,14].

Long COVID, also known as Post-Acute Sequelae of SARS-CoV-2 infection (PASC), refers to a range of symptoms that persist for more than four weeks following the initial SARS-CoV-2 infection [15,16,17,18]. These symptoms can affect various organ systems and include fatigue, dyspnea, chest pain, cognitive dysfunction, muscle pain, joint pain, headaches, among other manifestations [19,20,21,22,23,24,25]. The World Health Organization (WHO) defines “long COVID” as the continuation or development of new symptoms three months post-infection, lasting for at least two months, and not explained by alternative diagnoses [26,27].

Studies estimated that the prevalence of long COVID in general practice has been variable depending on the measure used [28,29,30,31]. Common occurrence of long COVID was reported in different studies with rates that can reach up to 78% [32,33,34,35,36,37,38,39]. The risk factors for developing long COVID include female sex, older age, higher body mass index (BMI), smoking, pre-existing comorbidities, and previous hospitalization or intensive care unit (ICU) admission [30,40,41,42,43].

On a separate note, the COVID-19 pandemic witnessed a surge in conspiracy theories related to the virus origin, its vaccination, and the public health control measures [44,45,46,47,48,49,50]. These COVID-19 conspiracies negatively impacted public perceptions and behaviors towards the preventive measures including vaccination hesitancy and lower compliance to non-pharmaceutical intervention (NPI) measures [47,51,52,53,54].

COVID-19 conspiracy theories are unsubstantiated beliefs that propose alternative explanations for the origin, spread, and impact of COVID-19 [47,55,56,57]. These theories reject scientific consensus regarding natural SARS-CoV-2 origin and suggest that powerful groups manipulated or fabricated information on the pandemic for nefarious purposes [58,59,60]. Common conspiracy theories include beliefs that the virus was deliberately constructed as a bioweapon, that the pandemic is a hoax, or that COVID-19 vaccines are harmful and part of a global control agenda [53,61,62,63].

Conspiracy theories can undermine public health efforts by promoting vaccine hesitancy, reducing adherence to NPI measures (e.g., mask-wearing, social distancing), and causing mistrust in health authorities [64,65,66]. In the Middle East, several studies showed that individuals who believe in conspiracy theories were less likely to engage in positive health behaviors that mitigate the spread of different viruses [67,68,69,70,71].

Cognitive biases can play a significant role in the formation and maintenance of conspiracy beliefs [72,73,74]. Confirmation bias entails that individuals seek out information that confirms their pre-existing views and dismiss evidence that contradicts them [75,76]. The uncertainty and anxiety generated by the COVID-19 pandemic can heighten susceptibility to these cognitive biases, as people look for explanations that provide a sense of control and understanding [77,78]. This phenomenon is supported by recent research which reported that individuals who endorsed COVID-19 conspiracy theories reported experiencing more side effects following COVID-19 vaccine uptake [79,80].

Psychological issues including anxiety and depression were widely prevalent during the COVID-19 pandemic and can influence the reporting and perception of physical symptoms [81,82,83,84]. Thereby, psychological issues can lead to psychosomatic phenomena where mental and emotional factors manifest as physical symptoms which was evident during the COVID-19 pandemic [85,86]. Recent evidence suggests that individuals experiencing high levels of stress and anxiety are more likely to report somatic symptoms, which can overlap with those of long COVID [87,88,89,90]. Therefore, exploring the hypothesis that belief in conspiracy theories —which are frequently linked to elevated psychological distress— may correlate with increased reporting of long COVID manifestations appears as a promising area for research investigation.

Several studies investigated the correlation between conspiracy beliefs and health behaviors during the COVID-19 pandemic [64,91,92,93]. The results of various studies indicated that individuals who endorse COVID-19 conspiracy theories are more likely to report negative health outcomes and display mistrust in medical interventions including vaccination [94,95,96,97,98,99,100,101]. However, there is a general lack of studies that assess the potential association between conspiracy beliefs and self-reported long COVID symptoms.

Thus, the current study hypothesis posited that individuals endorsing conspiracy theories may exhibit psychological distress, cognitive biases, or health anxiety, potentially leading to an increased reporting of long COVID symptoms. Consequently, this study aimed to explore the association between self-reported long COVID manifestations and the belief in COVID-19 conspiracy theories in Jordan and Kuwait, where specific conspiratorial ideas regarding infectious diseases were notably prevalent [70,71].

2. Materials and Methods

2.1. Study Design and Ethical Approval

This study was based on a cross-sectional electronic survey. This survey aimed to gather data on the beliefs in COVID-19 conspiracy theories and the prevalence of self-reported long COVID symptoms among a cohort of individuals previously diagnosed with COVID-19 residing in Arab countries with a focus on two Arab countries, namely Jordan and Kuwait based on the nationality of the authors (M.S., R.J.O., and M.B. are Jordanians while K.A.-M., M.A.A., M.A., F.A., N.A., and S.A. are Kuwaiti).

The inclusion criteria were: (1) being an adult aged 18 years or older; (2) had a self-reported, confirmed history of COVID-19 infection; (3) very good reading and writing in Arabic; and (4) providing an electronic consent to participate in the study.

The study was conducted in accordance with the Declaration of Helsinki and approved by the Institutional Review Board (IRB) at the School of Pharmacy – Applied Science Private University (Approval number: 2024-PHA-27).

2.2. Recruitment and Data Collection

Recruitment of potential participants was done through a snowball convenience sampling technique, initiated in Jordan and Kuwait by the authors (three Jordanians and six Kuwaiti authors, including eight females and a single male).

Initial participants were contacted directly through social media platforms (WhatsApp, Instagram, Facebook, Snapchat, and Messenger), and were encouraged to share the survey link within their respective networks to ensure a broad community engagement.

The survey was administered electronically via Google Forms, without collecting participant identifiers to ensure anonymity and confidentiality of all participant responses. Prior to participation, electronic informed consent was obtained from all participants, adhering to the ethical permission standards. The survey distribution took place in July 2024 and the participants were not offered any incentives for participation. The survey language was Arabic.

2.3. Sample Size Calculation

The required sample size was determined using G*Power software [102,103], predicated on an anticipated small to medium effect size of 0.3, with an alpha set at 0.050 and aiming for a power of 95.0% as follows. Based on these parameters, the recruitment of 147 participants was required to achieve a sufficient statistical power to detect significant associations between conspiracy beliefs and long COVID symptoms.

2.4. Survey Instrument

Following the introductory section highlighting the aims of the study indicating the assessment of long COVID symptoms that persisted for at least 2 months following recovery from COVID-19, and the informed consent item, the first survey section assessed participant demographics as follows. (1) Age as a scale variable later trichotomized into 3 groups (18 – 39 years vs. 40 – 59 years vs. 60 years or older); (2) Sex (male vs. female); (3) Educational level (high school or less vs. undergraduate vs. postgraduate); (4) Self-reported financial status of household (low-income vs. middle-income vs. high-income); (5) History of chronic disease (yes vs. no); (6) Self-reported wight and height (to measure BMI which was categorized into four categories: <18.5 vs. 18.5–24.9 vs. 25.0–29.9 vs. ≥30); and (7) History of tobacco consumption including cigarettes, narghile, vaping, or any other form of smoking (current vs. ex-smoker vs. never smoked).

The second section inquired about the history of COVID-19, and its vaccination as follows. (1) How many times did you get a confirmed diagnosis of COVID-19? (zero vs. one vs. two vs. three or more); (2) If infected, did you get hospitalized for COVID-19? (yes vs. no); and (3) How many COVID-19 vaccine doses did you receive? (zero vs. 1 dose vs. 2 doses vs. three or more doses).

The third section assessed self-reported long COVID symptoms as follows based on the WHO definition of long COVID [26], with selection of the most commonly prevalent list of long COVID manifestations based on extensive literature review and assessment of content validity by the first and senior authors [19,20,21,22,23,24,25,37,42,104,105,106,107,108,109]. The long COVID symptoms was assessed by asking the participants: On a scale from 0 (not at all), to 1 (rarely), to 2 (often), to 3 (always), how often did you experience these symptoms following your COVID-19 diagnosis compared to the period before your diagnosis? (1) Unusually tired or fatigued; (2) Shortness of breath or difficulty in breathing; (3) Chest pain or discomfort; (4) Difficulty concentrating or memory problems; (5) Muscle or joint pain; (6) Trouble in sleeping or poor sleep quality; (7) Loss or change in your sense of taste or smell; (8) Headaches; (9) Feeling of rapid or irregular heartbeat; and (10) Feeling anxious or depressed. Then, the “long COVID score” was calculated by summing the scores for each individual item.

The final section assessed the endorsement of COVID-19 conspiracy theories using the following five items (assessed on a 5-point Likert scale from 1 (strongly disagree) to 5 (strongly agree) which were constructed based on [67,71,80,110]. (1) Coronavirus was created purposefully by hidden powerful groups to control the global population; (2) COVID-19 dangers were exaggerated by the media and governments to cause fear among the public; (3) The COVID-19 pandemic was a hoax and the virus does not exist; (4) COVID-19 vaccines were a scheme by big pharma companies to make money and control public; and (5) Governments used the COVID-19 pandemic as an excuse to impose restrictions and monitor people closely.

2.5. Statistical and Data Analysis

We implemented a categorization approach to analyze long COVID scores (low=0–9, middle=10–19, and high=20–30) and conspiracy scores (low=5–11, middle=12–18, and high=19–25). The internal consistency of the long COVID score and the COVID-19 conspiracy theories scale was assessed using Cronbach α, a measure to verify that the scale items reliably assessed the same underlying concept, confirming the internal consistency of this novel construct.

To examine associations between categorical variables, we utilized the Chi-Square (χ²) test. To ensure that the scale variables were appropriately distributed for further parametric analysis, we conducted normality testing using the Kolmogorov-Smirnov test. Given the non-normal distribution of the two scale variables (long COVID score as a scale variable and COVID-19 conspiracy theories scale), the Mann-Whitney U test (M-W) and Kruskal-Wallis test (K-W) non-parametric tests were selected. Additionally, we utilized Analysis of Variance (ANOVA) to assess differences in long COVID scores across various sub-groups, employing Eta squared (η²) to quantify effect size and the proportion of variance explained by these differences. Eta squared values were interpreted as follows. η² values from 0 to 0.01 indicated negligible influence; 0.01 to 0.06 represented modest influence with limited but discernible effects; 0.06 to 0.14 suggested a moderate impact where group differences notably affected outcome variance; 0.14 to 0.26 indicated a strong impact with substantial variance accounted for by group differences; and values of 0.26 and above represented an extremely strong influence, where group differences were the primary determinants of outcomes based on Maher et al. [111].

Multinomial logistic regression was employed to assess the associations between multiple independent variables and a categorical dependent variable (long COVID score categories). This regression model was particularly selected due to its efficacy in handling categorical outcomes with more than two categories. We included variables in this model that demonstrated potential significance (p < 0.100) in univariate analyses, suggesting their predictive relevance. The regression model effectiveness was evaluated using Nagelkerke R², which adjusts the Cox and Snell R² to a range between 0 and 1, which measures the explained variance by the model comprehensively. Furthermore, to avoid the pitfalls of multicollinearity, which can skew regression analysis results, we tested for multicollinearity using the Variance Inflation Factor (VIF). Our criteria for statistical significance were set at a p value of < 0.050.

All statistical analyses were conducted using IBM SPSS Statistics for Windows, Version 26.0. Armonk, NY: IBM Corp.

3. Results

3.1. Study Sample Characteristics

A total of 756 responses were received. A majority of the study respondents were young adults aged 18 – 39 years (n = 460, 60.9%), females (n = 533, 70.6%), undergraduates (n = 464, 61.5%), reported middle household income (n = 512, 67.8%), and were either from Jordan (n = 438, 58.0%) or Kuwait (n = 245, 32.5%) as illustrated in (Table 1). Slightly more than a quarter of the study participants reported a history of chronic disease (n = 193, 25.6%), more than a third of the study participants had a BMI in the range of 25.0 – 29.9 indicating healthy weight (n = 272, 36.0%), and a majority of the participants were non-smokers (n = 496, 65.7%). The majority of participants self-reported a history of confirmed COVID-19 diagnosis either once (n = 297, 39.3%), twice (n = 125, 16.6%), or three times or more (n = 71, 9.4%). For the self-reported history of COVID-19 vaccine uptake, two-thirds of the study participants reported completing the primary vaccination series (n = 329, 66.7%), while 106 participants reported the uptake of booster vaccine doses (21.5%, Table 1).

3.2. The Prevalence of Long COVID among Respondents Who Had Confirmed COVID-19 Diagnosis

The distribution of self-reported long COVID symptoms by the participants with a history of confirmed COVID-19 diagnosis is illustrated in (Figure 1).

The long COVID-19 scale showed a high internal consistency as evidenced by a Cronbach’s α value of 0.907. For the ten long COVID signs/symptoms, the highest average score was reported for muscle or joint pain (mean = 1.86±0.977), followed by feeling unusually tired or fatigued (mean = 1.79±0.886), headaches (mean = 1.68±1.005), trouble in sleeping or poor sleep quality (mean = 1.62±1.018), feeling anxious or depressed (mean = 1.61±1.031), difficulty concentrating or memory problems (mean = 1.58±1.034), feeling of rapid or irregular heartbeat (mean = 1.38±1.008), loss or change in the sense of taste or smell (mean = 1.26±1.082), while the lowest average scores were observed for shortness of breath or difficulty in breathing (mean = 1.19±0.963) and chest pain or discomfort (mean = 1.19±0.964).

For the overall long COVID score in the study sample and on a range from zero to 30 the mean score was 15.2±7.365. The distribution of the long COVID score showed non-normality as evidenced by the Kolmogorov-Smirnov test (p < 0.001). The following variables were significantly associated with higher long COVID scores as shown in (Figure 2). Being a young adult aged 18 – 39 years as opposed to being middle-aged or elderly (mean long COVID scores of 15.61 vs. 14.78 vs. 10.50, p = 0.018, K-W; η² = 0.017); being a female (mean long COVID scores of 16.37 vs. 12.02, p < 0.001, M-W; η² = 0.075); having a self-reported low income of household compared to middle and high income (mean long COVID scores of 16.27 vs. 15.39 vs. 12.80, p = 0.011, K-W; η² = 0.020); having a history of chronic disease (mean long COVID scores of 16.64 vs. 14.64, p = 0.007, M-W; η² = 0.014); having a confirmed history of COVID-19 diagnosis for three time or more compared to having the diagnosis twice or once (mean long COVID scores of 18.89 vs. 17.43 vs. 13.31, p < 0.001, K-W; η² = 0.110); a history of hospitalization due to COVID-19 (mean long COVID scores of 17.79 vs. 14.93, p = 0.021, M-W; η² = 0.011); and high endorsement of COVID-19 conspiracy theories as opposed to middle and low embrace of these theories (mean long COVID scores of 17.89 vs. 14.92 vs. 12.42, p < 0.001, K-W; η² = 0.066, Figure 2).

By categorizing the long COVID score into three categories, the following variables were associated with a higher probability of having long COVID symptoms: younger age of 18 – 39 years, female sex, low monthly income of household, higher frequency of previous diagnosis of COVID-19, and higher embrace of COVID-19 conspiracy theories (Table 2).

3.3. Reliability of the Conspiracy Belief Scale

The COVID-19 conspiracy theories scale showed a fairly high internal consistency as evidenced by a Cronbach’s α value of 0.844, which confirmed the scale reliability to measure the construct consistently across items. The inter-item correlation analysis showed that the COVID-19 conspiracy theories scale was appropriate for its intended purpose with inter-item correlations ranging from moderate to strong (r = 0.403 to r = 0.748, Figure 3). This result indicated a coherent relationship among the items confirming the scale suitability to form a unified construct for the assessment of COVID-19 conspiracy beliefs.

3.4. The Endorsement of COVID-19 Conspiracy Theories among Respondents Who Had Confirmed COVID-19 Diagnosis

The mean score of COVID-19 conspiracy theories scale was 15.18±4.64 which indicated an overall neutral attitude to these theories among the respondents who reported a confirmed diagnosis of COVID-19. The distribution of the COVID-19 conspiracy theories scale showed non-normality as evidenced by the Kolmogorov-Smirnov test (p < 0.001).

A statistically significant higher embrace of COVID-19 conspiracy theories was noticed among the participants who did not receive COVID-19 vaccination compared to those who received a single dose, two doses, and three or more doses (mean COVID-19 conspiracy theories scores: 15.93 vs. 14.82 vs. 15.51 vs. 14.03, p = 0.021, K-W, Figure 4). Additionally, a statistically significant higher embrace of COVID-19 conspiracy theories was observed among the participants with higher long COVID scores (mean COVID-19 conspiracy theories scores: 16.54 vs. 15.26 vs. 13.20, p < 0.001, K-W, Figure 4).

3.5. Higher Reporting of Long COVID Manifestations Was Associated with the Endorsement of COVID-19 Conspiracy Theories in Multivariate Analysis

In our regression model on possible factors influencing long COVID scores, collinearity diagnostics indicated that all predictor variables exhibited minimal multicollinearity, which ensured the reliability of our regression estimates. The VIF for each predictor remained close to 1, with values ranging from 1.007 for the COVID-19 conspiracy score to 1.022 for the age category, which indicates the absence of substantial collinearity which might affect the analysis.

In multinomial logistic regression analysis, which showed a Nagelkerke R² value of 0.266, the following variables were independently associated with statistically significant higher reporting of long COVID manifestations among the study respondents. High endorsement of COVID-19 conspiracy theories significantly predicted higher self-reporting of long COVID symptoms. Specifically, individuals scoring high on conspiracy beliefs (19 – 25) were much more likely to report high long COVID symptoms (adjusted Odds Ratio (aOR) = 6.85, 95% CI: 2.90–16.13, p < 0.001) and middle long COVID symptoms (aOR = 2.82, 95% CI: 1.32–6.06, p = 0.008) compared to those with lower scores.

Other significant predictors included sex, with females more likely to report both high (aOR = 5.15, 95% CI: 2.66–10.00, p < 0.001) and middle long COVID symptoms (aOR = 2.11, 95% CI: 1.26–3.55, p = 0.005), and household income, where self-reported low income levels correlated with higher long COVID symptom reporting compared to higher income levels. Furthermore, individuals with frequent COVID-19 diagnoses (three times or more) reported high long COVID symptoms (aOR = 10.31, 95% CI: 3.73–28.57, p < 0.001) and middle long COVID symptoms (aOR = 4.76, 95% CI: 1.81–12.50, p = 0.002), and a history of hospitalization due to COVID-19 was also associated with an increase in high long COVID symptom reporting (aOR = 5.53, 95% CI: 1.66–18.46, p = 0.005, Table 3).

4. Discussion

The findings of this study elucidated the complex interplay of various factors in the reporting of long COVID symptoms among a cohort of adult individuals residing mainly in Jordan and Kuwait. These factors included demographics, health history in terms of frequency and severity of COVID-19, and psychological influences manifested in conspiratorial ideation.

The study findings indicated that myalgia or arthralgia, fatigue, and headaches were the most commonly reported symptoms in long COVID among the study participants in the two Arab countries. This is consistent with the results of various studies and reviews in different regions worldwide [37,112,113]. Specifically, in a systematic review and meta-analysis dating back to 2022, myalgia was reported at a frequency of 22% and fatigue was reported at a rate of 37% at >12-month follow-up [36].

Several hypotheses were cited in recent literature in the pursuit of explaining musculoskeletal symptoms in long COVID-19 as reviewed by Deniz Evcik in [114]. Chronic inflammation, possibly triggered by inflammatory cytokines can reduce muscle protein synthesis [115]. Additionally, the effects of SARS-CoV-2 on myocytes and persistent viral gene particles may promote immune hyperactivation, with ongoing low-grade inflammation associated with long COVID manifestations [109,116,117].

A key and novel finding from our analysis in this study was the substantial impact of endorsing COVID-19 conspiracy theories on the magnitude and frequency of long COVID symptom self-reporting by the participants. In this study, the participants with high conspiracy theories scores were found to be significantly more likely to report long COVID manifestations. The reliability of this result is supported by the validity of the survey instrument used to assess the embrace of COVID-19 conspiracy theories in this study. The strong association between the endorsement of COVID-19 conspiracy theories and the increased reporting of long COVID symptoms was highlighted by an adjusted odds ratio of approximately 7. This statistic indicated that the participants who strongly believe in COVID-19 conspiracies were seven times more likely to report higher long COVID manifestations compared to those who hold few or no such beliefs. This finding emphasizes the significant impact that psychological factors including conspiratorial ideas can have on the perception and reporting of health conditions [118,119].

In our attempt to explain this result, we suggest that the increased reporting of physical symptoms alongside certain psychological constructs may be influenced by attentional bias [120,121]. Attention bias in the context of higher conspiratorial beliefs can heighten awareness of bodily sensations, leading to the misattribution of ordinary physical symptoms to more serious conditions [72]. The results from our multinomial logistic regression analysis emphasized that the interaction between psychological factors and health perceptions is likely mediated by cognitive and emotional responses, which can significantly enhance symptom awareness and reporting [122]. The insight gained from this particular result can enhance the collective understanding of the variability observed in long COVID manifestations and highlights the interplay between psychological constructs and physical health outcomes such as long COVID manifestations.

Another plausible explanation for the observed correlation between endorsing COVID-19 conspiracy theories and more pronounced long COVID manifestations in this study may involve the psychological and social dimensions of conspiracy beliefs. These beliefs may not only reflect broader psychological discomfort and social alienation but also exacerbate the focus on physical sensations which was shown in a study in the context of COVID-19 among senior citizens in China by Chen et al. [123]. This heightened attentiveness can lead to more frequent and intense reporting of symptoms. Thus, the endorsement of conspiracy theories could serve as an indicator of underlying psychological stress, which is known to be associated with increased symptom reporting [122]. This relationship highlights the complex interplay between psychological factors and the perception of health, which highlights the importance of considering these elements when managing long COVID.

Previous studies have shown a strong link between heightened perception of physical symptoms and various psychological constructs, which supports the findings of our current study. For example, Lee et al. demonstrated that somatic symptom burden was closely associated with health anxiety, and both independently contribute to psychological distress, functional impairment, and increased healthcare utilization [124]. Similarly, Santoro et al. found that the severity of somatic symptoms could predict heightened levels of cyberchondria, a condition characterized by excessive and anxiety-driven online searches for health-related information, with health anxiety acting as a partial mediator in this relationship [125]. Pérez-Gay Juárez et al. highlighted the significant uncertainty during the COVID-19 pandemic regarding disease risks, public health measures, and novel vaccine safety [126]. This uncertainty exacerbates the tendency to over-interpret physical symptoms, particularly among individuals with a high intolerance of uncertainty, further supporting the interconnectedness of psychological responses and the perception of physical health during crises [126].

It is important at this point to acknowledge that the participants in our study might indeed experience physical long COVID symptoms at least to some extent. Additionally, it is essential to acknowledge that dismissing the physical nature of long COVID manifestations could have adverse consequences for the millions affected by this pervasive condition [32,33,34,35,36,37,38,39,127]. However, our findings also revealed a clear association between the endorsement of conspiracy theories and an increased perception and reporting of long COVID manifestations. This suggests that psychological factors influenced by misinformation and conspiratorial beliefs play a significant role in the manifestation of long COVID as reviewed by José Mora-Romo in [128]. Addressing these psychological aspects can be essential for effective management of long COVID, as interventions aimed at mitigating these influences could substantially alleviate symptoms of long COVID [89]. These psychological aspects of COVID-19 and long COVID burden have been demonstrated in recent studies from Germany and France [129,130,131]. Although changing deeply entrenched conspiracy beliefs presents a formidable challenge, incorporating psychological interventions into the treatment regimen could significantly improve outcomes for long COVID patients, complementing other medical treatments [128,132].

This study results also highlighted significant sex differences in the reporting of long COVID symptoms. In this study, female participants were more likely than males to report both high and moderate long COVID symptoms, with notable odds ratios indicating a strong sex disparity. This finding is consistent with existing literature suggesting that females may be more perceptive of bodily symptoms or more willing to report health issues [133,134]. Additionally, the social and psychological burdens which were disproportionately carried by females during the COVID-19 pandemic—such as increased caregiving roles and job insecurity—might contribute to higher symptom reporting rates [135,136].

The significantly higher reporting of long COVID manifestations among females in this study is consistent with the findings of previous research as follows. For example, the “Long-COVID in Scotland” study by Hastie et al. demonstrated a notably higher likelihood of no or partial recovery among females following COVID-19 [137]. Similarly, a study by Michael C. Sneller et al. in the U.S. highlighted an increased risk for PASC among females [138]. Additionally, Cohen and Yana van der Meulen Rodgers found that females were not only more prone to long COVID but also more likely to experience significant activity limitations due to the condition [139]. Moreover, a cross-sectional study in Denmark identified female sex as a significant factor, with an odds ratio of 1.7, associated with the development of de novo, multitype, post-COVID pain [140]. These consistent findings across diverse studies in various locations adds further support to our finding of the sex-related disparities in the impact and recovery patterns of long COVID.

Furthermore, our findings indicated that the frequency of COVID-19 diagnoses and prior hospitalizations due to COVID-19 were strong predictors of increased reporting of long COVID manifestations. This correlation likely reflects the direct physiological consequences of severe or recurrent SARS-CoV-2 infections, which tend to result in more pronounced residual health effects. The higher likelihood of long COVID occurrence following severe COVID-19 as indicated by a history of hospitalization or re-infection was highlighted in a recent review [141]. Therefore, the role of vaccination to prevent initial infection and to lessen its severity can be critical for effective mitigation of the risk of long COVID [142,143,144].

Finally, several limitations should be considered when interpreting the findings of our study. First, the cross-sectional design precluded any causal inferences between conspiracy beliefs and the reporting of long COVID symptoms in this study. Second, the reliance on self-reported data introduced the potential for subjective bias, which could lead to the overestimation or underestimation of the true associations between the study variables. Additionally, the study demographic composition, with a predominance of female participants potentially influenced by the majority of female authors, limits the generalizability of the results to broader populations due to the presence of selection bias. Finally, despite the validity of the scales used for assessment of conspiracy beliefs, the lack of a reliable tool for comprehensive assessment of long COVID may have resulted in an element of measurement bias.

5. Conclusions

The correlation between conspiracy beliefs and the reporting of long COVID symptoms in this study highlighted the complex role that cognitive and psychological factors play in health perceptions. This study findings point to the role of individual beliefs, coupled with demographic factors in influencing the reporting of long COVID symptoms. The strong association between conspiracy beliefs and symptom reporting emphasized the need for targeted public health interventions that address misinformation and its broader psychological and societal impacts. Understanding these dynamics is crucial for developing strategies that not only combat the spread of misinformation but also support the identification and treatment of long COVID.