The prevalence and risk of anxiety and depression in polycystic ovary syndrome: an overview of systematic reviews with meta-analysis.

PURPOSE: To summarize the pooled prevalence rates of anxiety and depression in women with polycystic ovary syndrome. METHODS: An overview of systematic reviews with meta-analysis was conducted. The CINAHL, Embase, PsycINFO, and PubMed databases were searched up to April 22, 2024. The methodological quality of systematic reviews was assessed using AMSTAR 2. The degree of overlap between reviews was analyzed by calculating the corrected covered area. RESULTS: Ten systematic reviews were selected. Regarding anxiety disorders, the pooled prevalence of panic disorder, social phobia, and anxiety disorders without specifying the type of disorder were 4%, 5%, and 16.9%, respectively. This prevalence was higher in depressive disorders, reaching 34.8%. Anxiety symptoms were very prevalent in women with PCOS, although the prevalence varied depending on the self-reported questionnaire used: the Hamilton Anxiety Scale 69.4%, the Hospital Anxiety and Depression Scale 41.5%, and the Self-rating Anxiety Scale 32.4%. Additionally, the highest prevalence of depression symptoms was associated with the Beck Depression Inventory 46.0%, followed by the Self-rating Depression Scale 39.2%, and the Hospital Anxiety and Depression Scale, which ranged from 31% to 33.8%. CONCLUSIONS: Meta-analyses found mainly anxiety and depression symptoms and disorders are prevalent in women with PCOS. Meta-analyses also showed women with PCOS had a higher risk of having anxiety disorders, and depression symptoms than women without PCOS. HIGHLIGHTS: • Anxiety symptoms were prevalent, although the prevalence varied depending on the self-reported questionnaire. • The highest prevalence of depression symptoms was associated with the Beck Depression Inventory (46.0%). • The pooled prevalence of anxiety disorders without specifying the type of disorder was 16.9%.

Concussion Incidence by Type of Sport: Differences by Sex, Age Groups, Type of Session, and Level of Play An Overview of Systematic Reviews With Meta-analysis.

OBJECTIVES: To (1) summarize pooled prevalence and incidence rates of concussion by type of sport and (2) synthesize the differences in prevalence or incidence rates of concussion by type of sports in terms of sex, age, type of session, and level of competition. DESIGN: An overview of systematic reviews with meta-analysis. LITERATURE SEARCH: CINAHL, Embase, Epistemonikos, PubMed, Scopus, SPORTDiscus, and the Cochrane Library databases were searched. STUDY SELECTION CRITERIA: Systematic reviews with meta-analyses reporting pooled incidence or prevalence of sport-related concussion. DATA SYNTHESIS: AMSTAR 2 was used to assess the methodological quality of reviews. Overlap between reviews was calculated. RESULTS: Ten systematic reviews with meta-analysis were included, all evaluating incidence rates of concussion. There were no meta-analyses of concussion prevalence. Concussions seem to have a higher incidence in rugby, snowboarding, ice hockey, and American football. In reviews that explored sex-based differences across subgroups, there was a higher incidence rate of concussion in baseball-softball, basketball, and soccer in females compared to males. There were no age subgroups analyzed. The incidence of concussions was higher during games compared to practice in American football, ice hockey, rugby, and soccer. Amateur rugby had higher concussion rates compared to professional rugby. CONCLUSIONS: Rugby, snowboarding, ice hockey, and American football had the highest incidence rate of concussion when no other differences (eg, type of session) were considered. However, important methodological flaws were detected, such as the lack of use of the Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) system and subgroups for specific factors (eg, age groups). J Orthop Sports Phys Ther 2024;54(11):1-9. Epub 15 October 2024. doi:10.2519/jospt.2024.12677.

Exercise interventions for self-perceived body image, self-esteem and self-efficacy in women diagnosed with breast cancer: a systematic review with meta-analysis and meta-regressions.

PURPOSE: To synthesise the effectiveness of exercise interventions on self-perceived body image, self-esteem and self-efficacy in women diagnosed with breast cancer who are undergoing or have completed primary adjuvant treatments. METHODS: A systematic review was conducted with meta-analysis and meta-regressions. Five electronic databases were searched from inception to June 2023, and hand searches were performed to explore the reference lists of similar systematic reviews. The established selection criteria were randomised clinical trials that evaluated any type of physical exercise intervention with self-perceived body image, self-esteem and self-efficacy as outcomes. No restrictions were imposed with respect to the control group. Main characteristics were extracted for each study. Meta-analyses, meta-regressions and sensitivity analyses were performed. The certainty of evidence for each outcome was graded using the GRADE approach. The risk of bias was evaluated using the RoB2 Cochrane tool. RESULTS: Twenty studies, comprising 19 different samples (n = 2030), were included. In general, meta-analysis indicated that physical exercise interventions were not superior to controls for improving self-esteem and body image in women diagnosed with breast cancer. However, subgroup meta-analysis showed a significant difference in self-esteem improvement for resistance exercise (SMD = 0.31; 95% CI = 0.07, 0.55; p = 0.01; I2 = 0%) and supervised exercise (SMD = 0.25; 95% CI = 0.08, 0.42; p = 0.0004; I2 = 0%) compared with controls. Self-efficacy results were scarce and controversial. In addition, serious concerns were mainly detected in terms of the risk of bias and indirectness of the evidence, which caused the certainty of evidence to be very low for all outcomes. CONCLUSION: Supervised exercise and resistance training appear to be effective exercise modalities for improving self-esteem in women diagnosed with breast cancer. In contrast, exercise interventions are not significantly associated with improvements in body image, while results on self-efficacy are controversial. However, due to the study's limitations, further research is needed.

Introducing JOSPT Methods: A Journal Focused on Advancing the Research Methods Applied to the Musculoskeletal Rehabilitation Field.

SYNOPSIS: In 2025, JOSPT will continue its mission to enhance research in the field of musculoskeletal rehabilitation. JOSPT aims to support authors who are working to advance the research methods applied to answer clinical questions in the musculoskeletal rehabilitation field. Using the most robust methods helps authors ensure their studies can have immediate impact on health policies and clinical practice. With this editorial, we introduce a new gold open-access journal, JOSPT Methods, where research will be available to read for free, immediately upon publication. J Orthop Sports Phys Ther 2024;54(10):1-3. doi:10.2519/jospt.2024.12972.

Exercise and mind-body exercise for feeding and eating disorders: a systematic review with meta-analysis and meta-regressions.

PURPOSE: To develop a systematic review with meta-analysis to summarize the effectiveness of exercise, regular physical activity, and mind-body exercise on harmful exercise habits, psychological factors, and quality of life in people clinically diagnosed with feeding and eating disorders. MATERIAL AND METHODS: Randomized clinical trials and pilot randomized clinical trials were considered. RESULTS: Twelve studies were included. No studies evaluated athletes. No studies examined regular physical activity as the targeted intervention. Quality of life could not be meta-analyzed. Overall, meta-analyses showed that exercise or mind-body exercise was not more effective than controls in reducing depression symptoms, harmful exercise habits, eating behaviors, or emotional regulation skills. However, important methodological and clinical issues were detected in the included studies. This affected the certainty of evidence of the meta-analyzed outcomes which ranged from low to very low. No studies reported in sufficient detail their interventions to be replicated. CONCLUSIONS: Overall, exercise and mind-body exercise may be ineffective in improving meta-analyzed outcomes. However, the certainty of evidence ranged from low to very low and the body of knowledge in this field needs to be increased to reach robust conclusions.

Exercise and mind-boy exercises were not more effective than controls for eating behaviors in eating disorders.Exercise and mind-boy exercises were not more effective than controls for depression symptoms in eating disorders.Clinicians should be aware no specific exercises can be recommended for treating psychological factors in eating disorders.

Psoriatic arthritis with psychological comorbidities: an overview of systematic reviews on incidence, prevalence, and geographic disparities.

Systematic reviews and meta-analysis evaluating the prevalence, incidence, and psychological comorbidities of psoriatic arthritis (PsA) are increasing, so it's time to perform an overview of systematic reviews. To summarize the pooled prevalence, incidence, and psychological comorbidities rates of PsA, and to explore possible continent disparities. In this overview of systematic reviews the CINAHL, EMBASE, PsycINFO, and PubMed were searched to October 25, 2023. This overview included systematic reviews with meta-analysis of people with PsA, providing the pooled prevalence or incidence rates of PsA in general, or clinical populations and/or psychological comorbidities. The Preferred Reporting Items for Overviews of Reviews (PRIOR) statement was followed. AMSTAR-2 assessed the quality of reviews. The degree of overlap was calculated using the corrected covered area (CCA). Maps were developed using the location of where primary studies were conducted using DataWrapper App. The protocol was prospectively registered with Open Science Framework registry. Pooled prevalence and incidence rates of PsA or its associated psychological comorbidities in general or specific populations. We also collected locations from the primary studies of the included meta-analyses. Only the assessment of prevalence rates of PsA in people with psoriasis showed slight overlap (CCA = 3.3%). Items 2, 3, 4, 7, 8, 10, 12, and 13 were poorly reported in AMSTAR-2. The pooled prevalence of PsA ranged from 0.13 to 0.15% in the general population, and 15.5% to 19.7% in people with psoriasis. The pooled incidence of PsA ranged from 8.26 to 9.27 cases per 100,000 inhabitants to 0.87 cases in individuals with hidradenitis suppurativa. The pooled prevalence of psychological comorbidities was 11.9-20% for depression, 19-33% anxiety, 38% alexithymia, and 72.9% in poor sleep quality. Only the pooled incidence of depression was assessed with 21.3 per 1000-person year. PsA seems to be prevalent and incident not only in people with psoriasis, but also in general population. Depression and anxiety symptoms may be present in some patients with PsA. Finally, continent disparities exist, and methodological and clinical issues were found, which could be helpful in the future agenda of the epidemiology of PsA.

Understanding the certainty of evidence from systematic reviews in rehabilitation science: what do clinicians need to know about GRADE?

PURPOSE: Systematic reviews of interventions are published each year evaluating rehabilitation approaches such as exercise, manual therapy, or electrotherapy. Currently, important methodological approaches are available to make systematic reviews more robust and transparent. One of these approaches is the Grading of Recommendation, Assessment, Development, and Evaluation (GRADE) system. MATERIAL AND METHODS: A perspective for rehabilitation was conducted aiming to (1) shed light on the meaning and relevance of the GRADE system in systematic reviews with meta-analysis of rehabilitation science, and (2) propose suggestions for helping clinicians improve the interpretation of the GRADE findings. RESULTS: The meaning and relevance of GRADE in rehabilitation science was discussed. Suggestions were proposed to help clinicians in the interpretation of the GRADE findings. We discussed the use of meta-analyses, meta-regressions, subgroups meta-analyses, and sensitivity analyses to increase the objectivity of the domains of GRADE. Finally, a future agenda was provided. CONCLUSION: The use of GRADE is essential for improving the synthesis of evidence that clinicians may often use in rehabilitation practice. However, GRADE is only one hallmark when the findings of systematic reviews are interpreted. The issues of sample size, futile research, pre-registration, switching outcomes, or narrative bias should be also considered.

Grading of Recommendation, Assessment, Development, and Evaluation (GRADE) is helpful in systematic reviews for understanding the certainty of evidence is analyzed.GRADE could detect limitation in the certainty of evidence helping clinicians to choose the best therapeutic option for their patients.Some domains of GRADE (indirectness and inconsistency) are particularly useful for clinicians who aim to translate the conclusions of a synthesis of evidence into clinical practice.

Spiritual well-being, faith, meaning in life, peace, and purpose in life for cancer-related fatigue: systematic review with meta-analysis and meta-regressions.

BACKGROUND: Cancer-related fatigue is associated with spiritual distress. Spiritual well-being, characterized by the presence of factors such as meaning in life or purpose in life, seems to play an important role in the management of symptoms of cancer. Currently, the number of studies evaluating the association between cancer-related fatigue and spiritual well-being is increasing and no systematic review has been conducted. AIM: To summarize the association between cancer-related fatigue and spiritual well-being, faith, meaning in life, peace, and purpose in life. DESIGN: A systematic review with meta-analysis. DATA SOURCES: The CINAHL, Embase, PsycINFO, and PubMed databases were searched from inception to 9 October 2023. We considered studies evaluating the cross-sectional or longitudinal association between cancer-related fatigue and the spiritual factors above mentioned. The Joanna Briggs Institute Checklist for Analytical Cross-Sectional Studies and the Quality in Prognosis Studies tool assessed the methodological quality of cross-sectional and longitudinal studies, respectively. The Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) system rated the certainty of evidence. Meta-analyses, meta-regressions, subgroup meta-analyses, and sensitivity analyses were conducted. RESULTS: A total of 13 studies were included and no longitudinal findings were found. One meta-analysis showed that cancer-related fatigue may be negatively correlated with spiritual well-being (r = - 0.37 (95%CI - 0.44 to - 0.28) p < 0.01). In addition, another meta-analysis found the correlation between cancer-related fatigue and faith was not statistically significant (r = - 0.25 (95%CI - 0.66 to 0.28) p = 0.36). CONCLUSIONS: Cancer-related fatigue may be correlated with spiritual well-being. However, the certainty of evidence was very low across the meta-analyzed outcomes. IMPLICATIONS FOR CANCER SURVIVORS: A negative correlation was observed between spiritual well-being and cancer-related fatigue.

How can clinicians enhance self-efficacy beliefs in osteoarthritis? An overview of systematic reviews with meta-analysis.

This overview of reviews aimed to synthesize the effectiveness of non-pharmacological approaches to enhance self-efficacy in people with osteoarthritis. The CINAHL, Embase, PsycINFO, PubMed, SPORTDiscus, and the Cochrane Library databases were searched from inception to December 2023. We considered systematic reviews with meta-analysis of randomized clinical trials evaluating any non-pharmacological intervention. We used AMSTAR 2 to assess the methodological quality of reviews. The overlap between reviews was calculated. We included eight systematic reviews with meta-analysis evaluating 30 different clinical trials. Overall, mind-body exercises, psychological interventions, and self-management strategies may improve arthritis self-efficacy. Specifically, the meta-analyses showed tai chi exercises, coping skills training, and the arthritis self-management program are more effective than controls to enhance arthritis self-efficacy in people with hip and/or knee osteoarthritis. In addition, inconsistent results were detected across meta-analyses regarding the effectiveness of multidisciplinary interventions. Finally, the degree of overlap between all reviews was moderate (CCA = 6%) and many included reviews reported most of the items of AMSTAR 2. Tai chi exercises, coping skills training, and the arthritis self-management program may be beneficial for enhancing arthritis self-efficacy. Open Science Framework Registration: https://doi.org/10.17605/OSF.IO/VX2T6 .

Exercise or mind-body exercises for psychiatry symptoms and quality of life in schizophrenia spectrum and other psychotic disorders: an overview of systematic reviews with meta-analysis.

PURPOSE: This overview of systematic reviews with meta-analysis aimed to summarize the effects of exercise, regular physical activity, and mind-body exercises on negative symptoms, depression symptoms, and quality of life in schizophrenia spectrum and other psychotic disorders. MATERIAL AND METHODS: The CINAHL, Embase, PubMed, SPORTDiscus, and the Cochrane Library databases were searched up to November 10, 2023. AMSTAR 2 was used and the overlap between reviews was calculated. RESULTS: Eighteen reviews were included. No reviews meta-analyzed regular physical activity. Aerobic exercise may be more effective than yoga, treatment-as-usual, or multiple controls for reducing negative symptoms. Tai chi may be more effective than multiple controls for decreasing negative symptoms. Aerobic exercise or multimodal exercise programs may be more effective than multiple controls for reducing depression symptoms. Yoga may be more effective than waitlist for decreasing depression symptoms. Aerobic exercise may be more effective than multiple controls for improving quality of life. Yoga may be more effective than treatment-as-usual for improving quality of life. The rest of the meta-analyses found no differences between groups or combined different types of interventions in their meta-analyses. CONCLUSIONS: Despite these results, important methodological concerns were detected that precluded us from making sound clinical recommendations. PROTOCOL REGISTRATION: https://doi.org/10.17605/OSF.IO/7V5QZ.

This overview of reviews evaluates exercise and mind-body exercise for schizophrenia and other psychotic disorders.Aerobic exercise or tai chi may reduce negative symptoms in these psychiatric disorders.Yoga may reduce depression symptoms and improve quality of life in these psychiatric disorders.

The prevalence of burnout in oncology professionals: an overview of systematic reviews with meta-analyses including more than 90 distinct studies.

PURPOSE: This overview of reviews aimed to summarize the prevalence of burnout and the dimensions of burnout (emotional exhaustion, depersonalization, and personal accomplishment) in oncology professionals around the world. METHODS: The CINAHL, Embase, PsycINFO, and PubMed databases were searched from inception to September 13, 2023. AMSTAR 2 was used to assess the quality of reviews. The overlap between reviews was calculated. RESULTS: Twelve reviews were included. Overall, reviews showed that burnout was prevalent in oncologists and oncology nurses. On the other hand, no reviews meta-analyzed the prevalence of burnout in oncology radiation therapists. In addition, the dimensions of burnout, high emotional exhaustion, high depersonalization, and low personal accomplishment were highly prevalent across reviews in oncologists, oncology nurses, and oncology radiation therapists. In oncologists, the Americas (specifically Canada) showed the highest prevalence rates for high emotional exhaustion, whereas high depersonalization and low personal accomplishment were mainly prevalent in Europe and Asia, respectively. In oncology nurses, high emotional exhaustion and high depersonalization were mainly prevalent in Asia, whereas low personal accomplishment was more prevalent in the Americas (specifically Canada). The prevalence of overall levels of burnout was not meta-analyzed by continents. CONCLUSION: Some methodological improvements may help to make more robust the findings of this overview (e.g., specific subgroup meta-analyses by oncology specialties), which may help readers reach more precise, direct, and consistent findings. PROTOCOL REGISTRATION: https://doi.org/10.17605/OSF.IO/QPWG5 .

The prevalence of anxiety and depression in cancer around the world: An overview of systematic reviews evaluating 128 meta-analyses.

BACKGROUND: This overview of systematic reviews with meta-analysis summarized the prevalence of anxiety and depression in different types of tumors around the world. METHODS: The quality of reviews was assessed. The degree of overlap between reviews was calculated. The regional prevalence of anxiety and depression was shown in the main text based on the World Health Organization regions. RESULTS: Twenty-five reviews including 128 meta-analyses of interest were selected. The pooled prevalence of anxiety in breast tumors was in Africa (19 %), the Americas (38 %), Eastern Mediterranean (56 %), Europe (38 %), South-East Asia (42 %), and Western Pacific (26 %). The pooled prevalence of depression in breast tumors was in Africa (40 %), the Americas (23-25 %), Eastern Mediterranean (49-51 %), Europe (27-29 %), South-East Asia (23-33 %), Western Pacific (29 %). The pooled prevalence of depression in digestive tumors was in the Americas (4-44 %), Eastern Mediterranean (42 %), Europe (20-27 %), South-East Asia (66 %), and Western Pacific (24-40 %). The pooled national prevalence of anxiety and depression was mainly evaluated in China and Iran. LIMITATIONS: Important methodological issues were identified. For example, no reviews judged the certainty of evidence. CONCLUSIONS: The Eastern Mediterranean region showed the highest prevalence of anxiety and depression for breast tumors. The South-East Asian region showed the highest prevalence of depression for digestive tumors. In these regions, many countries are considered low-income and middle-income countries. Further research funding would help increase the investigation on this topic, which may allow the development of preventive strategies that reduce the prevalence of anxiety and depression.

Multimodal exercise programs may improve posttraumatic stress disorders symptoms and quality of life in adults with PTSD: An overview of systematic reviews with meta-analysis.

OBJECTIVE: This overview of reviews aimed to summarize the effectiveness of exercise, regular physical activity or mind-body exercises on posttraumatic stress disorder (PTSD) symptoms and comorbidities associated with PTSD (e.g. depression symptoms) among individuals without age, gender, race, ethnicity or setting restrictions. DATA SOURCES: The CINAHL, Embase, PubMed and SPORTDiscus databases were searched from inception to November 16, 2023. REVIEW METHODS: Systematic reviews with meta-analysis of randomized clinical trials evaluating exercise, regular physical activity or mind-body exercises were considered. Control groups and outcome measures were not restricted. AMSTAR 2 assessed the methodological quality of reviews. The overlap between reviews was calculated. RESULTS: A total of 14 systematic reviews were included meta-analyzing 23 distinct randomized clinical trials. There was a very high overlap between reviews (corrected covered area = 16%). PTSD symptoms, depression symptoms, anxiety symptoms, sleep quality, substance abuse and quality of life were meta-analyzed. No reviews meta-analyzed the effects of regular physical activity. Overall, the meta-analyses found multicomponent exercise programs may have positive results in reducing PTSD symptoms and improving quality of life. In addition, the results of yoga were inconsistent across the meta-analyses for PTSD symptoms, and no differences between groups were found in favor of yoga for depression symptoms. Finally, no specific conclusions could be made about anxiety symptoms, sleep quality and substance abuse. CONCLUSION: A multicomponent exercise program may be effective in improving PTSD symptoms and quality of life, whereas yoga may be ineffective for depression symptoms in adults with PTSD.

Acceptance and Commitment Therapy for Chronic Pain: An Overview of Systematic Reviews with Meta-Analysis of Randomized Clinical Trials.

This overview of reviews aimed to summarize the evidence from systematic reviews and meta-analyses of randomized clinical trials of the efficacy of acceptance and commitment therapy (ACT) for adults with chronic pain in relation to pain intensity, pain-related functioning, quality of life, and psychological factors. The Cumulative Index of Nursing and Allied Health Literature (CINAHL), Embase, PsycINFO, PubMed, and the Cochrane Library databases were searched from inception to July 2, 2023. AMSTAR 2 was used to assess the methodological quality of systematic reviews. The overlap among reviews was calculated. Nine reviews comprising 84 meta-analyses of interest were included. At post-treatment, some meta-analyses mainly showed that ACT can reduce depression symptoms, anxiety symptoms, psychological inflexibility, and pain catastrophizing; and can improve mindfulness, pain acceptance, and psychological flexibility. At three-month follow-up, ACT can reduce depression symptoms and psychological inflexibility, as well as improve pain-related functioning and psychological flexibility. At six-month follow-up, ACT can improve mindfulness, pain-related functioning, pain acceptance, psychological flexibility, and quality of life. At six-twelve-month follow-up, ACT can reduce pain catastrophizing and can improve pain-related functioning. Some methodological and clinical issues are identified in the reviews, such as a very high overlap between systematic reviews, the fact that the certainty of the evidence is often not rated and specific details needed to replicate the interventions reviewed are often not reported. Overall, however, randomized clinical trials and systematic reviews show that ACT can improve outcomes related to chronic pain (eg, pain-related functioning). Future systematic reviews should address the methodological and clinical concerns identified here to produce higher-quality findings. PERSPECTIVE: Despite certain methodological and clinical issues, randomized clinical trials and systematic reviews of ACT appear to show that it can improve outcomes related to chronic pain (eg, psychological factors).

No effects were found in favor of Hatha or Iyengar yoga exercises for improving cancer-related fatigue, depression symptoms, or quality of life: a systematic review with meta-analysis and metaregression.

OBJECTIVE: To summarize the evidence on the effectiveness of Hatha or Iyengar yoga exercises on cancer-related fatigue, depression symptoms, and the overall quality of life in adults with cancer. METHODS: A systematic review with meta-analysis was conducted. The CINAHL (via EBSCOhost), Embase, PubMed, and SPORTDiscus (via EBSCOhost) databases were searched from inception to 7th November 2022. Clinical trials evaluating cancer-related fatigue, depression symptoms, and the overall quality of life were included. The risk of bias was assessed using the Cochrane Risk of Bias tool 2. The Template for Intervention Description and Replication (TIDieR) checklist was used to check if the interventions reviewed were described in detail to be implemented in the clinical setting. The Grading of Recommendations, Assessment, Development, and Evaluations approach was used to rate the certainty of evidence. Meta-regressions, sensitivity analyses, and subgroup meta-analyses were conducted to explore sources of heterogeneity. RESULTS: Eleven studies were included (N = 777 participants). Overall, Hatha, Iyengar, and the combination of both yoga styles did not improve any of the outcomes of interest. In addition, five studies had a high risk of bias, and six studies had some concerns about biases. Weaknesses in reporting modifications during the development of the study were observed (TIDieR item 10). The certainty of evidence ranged from low to very low across the outcomes. CONCLUSIONS: We could not make sound clinical recommendations with the current quality of the findings.

Psychological and spiritual interventions to enhance meaning in adults diagnosed with cancer: a systematic review with meta-analysis and meta-regression.

OBJECTIVE: To summarize the evidence on the effectiveness that psychological and/or spiritual interventions may have to change the levels of meaning, measured with the Functional Assessment of Chronic Illness Therapy-Spiritual Well-Being Scale (FACIT-Sp), in adults diagnosed with cancer. METHODS: Systematic review with meta-analysis and meta-regression. CINAHL (via EBSCOhost), Embase, PubMed, PsycINFO (via ProQuest), and the Cochrane Library were searched from inception to 21st October 2022. Manual searches were conducted. Only randomized clinical trials (RCTs) were included. The risk of bias was assessed with the Cochrane Risk of Bias tool 2. The Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) approach was used to judge the certainty of the evidence. RESULTS: Eight RCTs were included (N = 1682). Although some individual studies showed positive effects to enhance meaning using mindfulness or dignity therapy, the overall and individual meta-analyses showed a lack of effect of psychological and spiritual interventions in comparison to comparator interventions (MD (95%CI) = -0.19 (-0.45 to 0.06), p = 0.11, Tau2 = 0.0015, I2 = 2%). Publication bias was undetected (Egger's test = 0.35). Furthermore, no RCTs were judged to have a low risk of bias and the overall certainty of the evidence was judged as low. Meta-regression and subgroups meta-analyses also found possible sources of heterogeneity such as some cancer characteristics, the educational stage, or the religious affiliation. CONCLUSIONS: Despite some RCTs may show promising results following mindfulness or dignity therapy, no effects were observed in the meta-analysis. Moreover, important methodological and clinical concerns precluded us to make sound clinical recommendations with the available evidence. OPEN SCIENCE FRAMEWORK DOI REGISTRATION: https://doi.org/10.17605/OSF.IO/4YMTK .