Stressful life events and maltreatment in conversion (functional neurological) disorder: systematic review and meta-analysis of case-control studies

Background: Although many studies have investigated the association between stress and risk of dementia, findings are inconsistent due to the variation in the measures used to assess stress. Objective: We conducted a systematic review and meta-analysis to investigate the association between psychological stress (including neuroticism, stressful life events, and perceived stress) and the risk of incident dementia and mild cognitive impairment in adults. Methods: PsycINFO, Embase, and MEDLINE were searched to October 2020 for eligible observational, prospective studies. Of the 1,607 studies screened, 26 (24 unique cohorts) were included in the qualitative analysis and 16 (15 unique cohorts) were included in the quantitative analysis. Results: Across studies, higher perceived stress was significantly associated with an increased risk of mild cognitive impairment (Cases/Total N = 207/860: hazard ratio [HR] = 1.19, 95% confidence interval [CI] = 1.03–1.38) and all-cause dementia (Cases/Total N = 203/1,882: HR = 1.44, 95% CI = 1.07–1.95). Exposure to two or more stressful life events (versus none) was significantly associated with an increased risk of all-cause dementia (Cases/Total N = 3,354/11,597: HR = 1.72, 95% CI = 1.14–2.60), while one or more stressful life events was not. Higher neuroticism was significantly associated with an increased risk of Alzheimer’s disease dementia (Cases/Total N = 497/4,771: HR = 1.07, 95% CI = 1.01–1.12), but not all-cause dementia. Conclusion: This review suggests that psychological stress in adulthood is associated with an increased risk of dementia. Further research is needed to clarify the mechanisms underlying these associations.

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Maternal Stressful Life Events During the Periconceptional Period and Orofacial Clefts: A Systematic Review and Meta-Analysis

The Cleft Palate-Craniofacial Journal ◽

10.1177/10556656211045553 ◽

2022 ◽

pp. 105566562110455

Author(s):

Christina Tran ◽

Andrew A. Crawford ◽

Alexander Hamilton ◽

Clare E. French ◽

Yvonne Wren ◽

...

Keyword(s):

Systematic Review ◽

Life Events ◽

Cleft Lip ◽

Stressful Life Events ◽

Meta Analysis ◽

Positive Association ◽

Population Level ◽

Risk Of Bias ◽

Stressful Life ◽

Periconceptional Period

Objective To assess whether women who experience stressful life events during the periconceptional period are at higher risk of giving birth to a baby with an orofacial cleft (OFC). Design Systematic review and meta-analysis of studies reporting the proportion of babies born with OFC to mothers exposed and unexposed to population-level or personal-level stressful life events during the periconceptional period. Six electronic databases were searched from inception to August 2020. Risk of bias was assessed using the Newcastle-Ottawa scale. Odds ratios (ORs) for the odds of OFC in babies of exposed mothers relative to unexposed controls were extracted and/or calculated. Random effects meta-analysis was undertaken, stratified by cleft subtype. Results Of 12 eligible studies, 8 examined experience of personal events and 4 examined population-level events. Studies demonstrated low-moderate risk of bias and there was indication of publication bias. There was some evidence that personal stressful life events were associated with greater odds of cleft lip and/or palate (six studies, OR 1.63, 95% confidence interval (CI) 1.16, 2.30, P = 0.001) and cleft palate only (six studies, OR 1.45, 95% CI 1.02, 2.06, P = 0.04). Population-level events were associated with higher odds of OFC in studies that did not specify subtype (three studies, OR 1.64, 95% CI 1.19, 2.25, P = 0.002), but subtype stratified analyses were underpowered. Heterogeneity was high. Conclusions Limited evidence indicated a weak positive association between maternal stressful life events during the periconceptional period and risk of OFC in the offspring, but further studies with greater consistency in research design are needed.

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The Impact of Prenatal Stressful Life Events on Adverse Birth Outcomes:a Systematic Review and Meta-analysis

Journal of Affective Disorders ◽

10.1016/j.jad.2021.03.083 ◽

2021 ◽

Author(s):

Xiuxiu Ding ◽

Mingming Liang ◽

Yile Wu ◽

Tianming Zhao ◽

Guangbo Qu ◽

...

Keyword(s):

Systematic Review ◽

Life Events ◽

Stressful Life Events ◽

Meta Analysis ◽

Stressful Life ◽

The Impact

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Respiratory disturbances in fibromyalgia: a systematic review and meta-analysis of case control studies

Expert Review of Respiratory Medicine ◽

10.1080/17476348.2021.1918547 ◽

2021 ◽

Author(s):

Araceli Ortiz-Rubio ◽

Irene Torres-Sánchez ◽

Irene Cabrera-Martos ◽

Laura López-López ◽

Janet Rodríguez-Torres ◽

...

Keyword(s):

Systematic Review ◽

Meta Analysis ◽

Case Control ◽

Case Control Studies

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Running and Knee Osteoarthritis: A Systematic Review and Meta-analysis

The American Journal of Sports Medicine ◽

10.1177/0363546516657531 ◽

2016 ◽

Vol 45 (6) ◽

pp. 1447-1457 ◽

Cited By ~ 38

Author(s):

Kate A. Timmins ◽

Richard D. Leech ◽

Mark E. Batt ◽

Kimberley L. Edwards

Keyword(s):

Systematic Review ◽

Full Text ◽

Meta Analysis ◽

Positive Association ◽

Case Control ◽

Case Control Studies ◽

Eligibility Criteria ◽

Knee Oa ◽

Knee Joint Surgery ◽

Newcastle Ottawa Scale

Background: Osteoarthritis (OA) is a chronic condition characterized by pain, impaired function, and reduced quality of life. A number of risk factors for knee OA have been identified, such as obesity, occupation, and injury. The association between knee OA and physical activity or particular sports such as running is less clear. Previous reviews, and the evidence that informs them, present contradictory or inconclusive findings. Purpose: This systematic review aimed to determine the association between running and the development of knee OA. Study Design: Systematic review and meta-analysis. Methods: Four electronic databases were searched, along with citations in eligible articles and reviews and the contents of recent journal issues. Two reviewers independently screened the titles and abstracts using prespecified eligibility criteria. Full-text articles were also independently assessed for eligibility. Eligible studies were those in which running or running-related sports (eg, triathlon or orienteering) were assessed as a risk factor for the onset or progression of knee OA in adults. Relevant outcomes included (1) diagnosis of knee OA, (2) radiographic markers of knee OA, (3) knee joint surgery for OA, (4) knee pain, and (5) knee-associated disability. Risk of bias was judged by use of the Newcastle-Ottawa scale. A random-effects meta-analysis was performed with case-control studies investigating arthroplasty. Results: After de-duplication, the search returned 1322 records. Of these, 153 full-text articles were assessed; 25 were eligible, describing 15 studies: 11 cohort (6 retrospective) and 4 case-control studies. Findings of studies with a diagnostic OA outcome were mixed. Some radiographic differences were observed in runners, but only at baseline within some subgroups. Meta-analysis suggested a protective effect of running against surgery due to OA: pooled odds ratio 0.46 (95% CI, 0.30-0.71). The I2 was 0% (95% CI, 0%-73%). Evidence relating to symptomatic outcomes was sparse and inconclusive. Conclusion: With this evidence, it is not possible to determine the role of running in knee OA. Moderate- to low-quality evidence suggests no association with OA diagnosis, a positive association with OA diagnosis, and a negative association with knee OA surgery. Conflicting results may reflect methodological heterogeneity. More evidence from well-designed, prospective studies is needed to clarify the contradictions.

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