Effects of Urban Forest Therapy Program on Depression Patients

Components and Application Plans for Designing a Korean Forest Therapy Prescription Model: Using Case Examination and a Focus Group Interview (FGI)

Background: Although forest therapy services in South Korea have demonstrated mental and physical effects, there is no established system for forest therapy prescriptions. To this end, it is necessary to devise a systematic model for the introduction of forest therapy prescriptions by linking the existing forest therapy infrastructure and medical services. Therefore, this study aimed to derive the components and application plans needed to devise a forest therapy prescription model for the spread of medical-linked forest therapy services and to secure a forest therapy prescription infrastructure. Methods: To this end, Korean and foreign cases of prescription models and healthcare service provision systems were analyzed to derive the necessary components for prescription models. Subsequently, a Focus Group Interview (FGI) was conducted with eight experts in the fields of forest therapy and welfare, psychiatry, and health and nursing, and opinions were derived regarding the conception and empirical application of the forest therapy prescription model through content analysis. Results: As a result of the study, five components (clear role-sharing and a collaboration system, a continuous system, customized service provision, various technologies and content, and a database-based prescription system) were derived from cases of prescription models and healthcare service provision systems according to field. Furthermore, the FGI identified three primary topics: stakeholders' scope and role, procedures and effectiveness, and additional considerations. Each was categorized into eight sub-categories relevant to the design of the forest therapy prescription model. Conclusions: These results can be used as basic data for devising a systematic Korean forest therapy prescription model in which forest therapy and medical services are linked, providing a foundation for personalized forest therapy prescriptions to be implemented.

Measurement Properties of the Patient Health Questionnaire-15 and Somatic Symptom Scale-8: A Systematic Review and Meta-Analysis

Importance

The subjective experience of somatic symptoms is a key concern throughout the health care system. Valid and clinically useful instruments are needed.

Objective

To evaluate the measurement properties of 2 widespread patient-reported outcomes: the Patient Health Questionnaire-15 (PHQ-15) and Somatic Symptom Scale-8 (SSS-8).

Data Sources

Medline, PsycINFO, and Web of Science were last searched February 1, 2024.

Study Selection

English-language studies reporting estimates pertaining to factor analysis, taxometric analysis, internal consistency, construct validity, mean scores in relevant groups, cutoffs, areas under the receiver operating characteristic curves (AUROCs), minimal clinically important difference, test-retest reliability, or sensitivity to change.

Data Extraction and Synthesis

Search hits were reviewed by independent raters. Cronbach α, Pearson r, means, and between-group effect sizes indicative of sensitivity to change were pooled in random-effects meta-analysis. Study quality was assessed using 3 instruments. Reporting followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 reporting guideline.

Main Outcomes and Measures

Comprehensive overview of evidence pertaining to the measurement properties of the PHQ-15 and SSS-8.

Results

A total of 305 studies with 361 243 participants were included. Most concerned routine care (178 studies) and the general population (27 studies). In factor analyses, both scales reflected a combination of domain-specific factors (cardiopulmonary, fatigue, gastrointestinal, pain) and a general symptom burden factor. The pooled PHQ-15 α was 0.81 (95% CI, 0.80-0.82), but with low item-total correlations for items concerning menstrual problems, fainting spells, and sexual problems (item-total correlations <0.40), and the SSS-8 α was 0.80 (0.77-0.83). Pooled correlations with other measures of somatic symptom burden were 0.71 (95% CI, 0.64-0.78) for the PHQ-15 and 0.82 (95% CI, 0.72-0.92) for the SSS-8. Reported AUROCs for identification of somatoform disorders ranged from 0.63 (95% CI, 0.50-0.76) to 0.79 (95% CI, 0.73-0.85) for the PHQ-15 and from 0.71 (95% CI, 0.66-0.77) to 0.73 (95% CI, 0.69-0.76) for the SSS-8. The minimal clinically important difference on both scales was 3 points. Test-retest reliability could not be pooled and was inconsistent for the PHQ-15 (PHQ-15: r = 0.65-0.93; ICC, 0.87; SSS-8: r = 0.996, ICC = 0.89). The PHQ-15 showed tentative sensitivity to change (g = 0.32; 95% CI, 0.08-0.56), but data for the SSS-8 were lacking.

Conclusions and Relevance

In this systematic review and meta-analysis, findings supported use of the PHQ-15 and SSS-8 for the assessment of symptom burden, but users should be aware of the complex, multifactorial structures of these scales. More evidence is needed concerning longitudinal measurement properties.

Effectiveness of mind-body medicine for Hwa-Byung (a Korean cultural diagnosis of suppressed anger): A systematic review of interventional studies

OBJECTIVE

This systematic review analysed the effectiveness of mind-body modalities (MBMs) in Hwa-byung (HB).

METHODS

Ten electronic databases were searched. Intervention studies using MBMs for individuals with HB, published up to July 2023, were included. The methodological quality of the included studies was assessed using the Cochrane RoB and ROBINS-I tools. Meta-analysis of continuous variables was presented as mean differences (MDs) and their 95% confidence intervals (CIs).

RESULTS

Nine studies including five randomized controlled clinical trials, were included. The MBM types were meditation, relaxation, biofield therapy, art therapy, and forest-based MBM, and comprehensive HB programs. Most studies used an MBM group, with 5-6 sessions delivered during an average of 4-5 weeks. As a result of the meta-analysis, art therapy showed a statistically significantly better effect on improving the Hwa-Byung Scale (HB-S) score compared to the waitlist control (MD = -7.74; 95% CI = -9.81 to -5.66). In the before-and-after comparison, MBMs were frequently reported to have significant benefits for improving the HB-S total score (7/7, 100%), depressive mood (4/5, 80%), and state anxiety (6/8, 75%). Some methodological flaws were identified in the included studies, including the reliability of diagnosis, non-implementation of assessor blinding, and inappropriate control groups.

CONCLUSIONS

This review identified potentially promising MBMs that were not previously recommended in the current HB clinical practice guidelines. In the future, high-quality clinical studies that include the use of standardized HB diagnostic criteria, homogeneous interventions, appropriate control groups, standard assessment tools such as the HB-S, and assessor blinding are needed.

Health effects of green prescription: A systematic review of randomized controlled trials

An increasing number of studies have examined the effects of green prescription on various health outcomes. The aim of this study was to systematically review published randomized controlled trial studies on the health benefits of green prescriptions. We searched PubMed, Scopus, and Web of Science for the relevant original articles published in English until June 30, 2023. Our search initially retrieved 26176 articles, of which 31 studies were included in our review after removing the duplicates and excluding ineligible articles based on their titles, abstracts, and full-text review. Consistent positive health benefits of green prescription were reported for psychological health and wellbeing (16 out of 24 studies), cardiometabolic health (five out of nine studies), physical activity (eight out of nine studies), and inflammation (two out of two studies). The reviewed studies did not report any significant benefits in orthopedic conditions, pain, and recovery from exhaustion disorder due to their implemented green prescriptions; however, the number of studies was too small to generalize the effect of green prescriptions on these outcomes. The quality of these studies was generally acceptable, with 28 studies having some concerns regarding their overall risk of bias and only three studies with a high risk of bias. All in all, this systematic review suggests that green prescriptions can be effective in improving various health outcomes, but further studies with larger sample sizes and objective measures are needed.