Meta-analysis in systematic reviews of complementary and integrative medicine trials

Latent tree analysis for the identification and differentiation of evidence-based Traditional Chinese Medicine diagnostic patterns: A primer for clinicians

BACKGROUND

A supplementary chapter on the diagnostic patterns of Traditional Medicine, including Traditional Chinese Medicine (TCM), was introduced into the latest edition of the International Classification of Diseases (ICD-11). However, evidence-based rules are yet to be developed for pattern differentiation in patients with specific conventional medicine diagnoses. Without such standardised rules, the level of diagnostic agreement amongst practitioners is unsatisfactory. This may reduce the reliability of practice and the generalisability of clinical research.

PURPOSE

Using cross-sectional study data from patients with functional dyspepsia, we reviewed and illustrated a quantitative approach that combines TCM expertise and computer algorithmic capacity, namely latent tree analysis (LTA), to establish score-based pattern differentiation rules.

REVIEW OF METHODS

LTA consists of six major steps: (i) the development of a TCM clinical feature questionnaire; (ii) statistical pattern discovery; (iii) statistical pattern interpretation; (iv) TCM diagnostic pattern identification; (v) TCM diagnostic pattern quantification; and (vi) TCM diagnostic pattern differentiation. Step (i) involves the development of a comprehensive questionnaire covering all essential TCM clinical features of the disease of interest via a systematic review. Step (ii) to (iv) required input from TCM experts, with the algorithmic capacity provided by Lantern, a dedicated software for TCM LTA.

MOTIVATIONAL EXAMPLE TO ILLUSTRATE THE METHODS

LTA is used to quantify the diagnostic importance of various clinical features in each TCM diagnostic pattern in terms of mutual information and cumulative information coverage. LTA is also capable of deriving score-based differentiation rules for each TCM diagnostic pattern, with each clinical feature being provided with a numerical score for its presence. Subsequently, a summative threshold is generated to allow pattern differentiation. If the total score of a patient exceeded the threshold, the patient was diagnosed with that particular TCM diagnostic pattern.

CONCLUSIONS

LTA is a quantitative approach to improving the inter-rater reliability of TCM diagnosis and addressing the current lack of objectivity in the ICD-11. Future research should focus on how diagnostic information should be coupled with effectiveness evidence derived from network meta-analysis. This will enable the development of an implementable diagnostics-to-treatment scheme for further evaluation. If successful, this scheme will transform TCM practice in an evidence-based manner, while preserving the validity of the model.

Systematic review and meta-analysis of Chinese herbal medicine as adjuvant treatment in advanced non-small cell lung cancer patients

INTRODUCTION

Whether combining Chinese herbal medicines (CHMs) and chemotherapy to treat patients with advanced non-small-cell lung cancer (NSCLC) has clinical benefits has yet to be confirmed. A meta-analysis was performed to address the efficacy of CHM in patients with advanced NSCLC.

METHODS

Seven databases, including PubMed, MEDLINE, Cochrane Library, Embase, CINAHL Plus with Full Text (EBSCO), WANFANG DATA and the Chinese National Knowledge Infrastructure (CNKI), were systematically searched for available literature through March10, 2020. A meta-analysis was conducted to generate combined risk ratios(RRs) with 95 % confidence intervals (CIs) for objective response rates (ORRs), disease control rates (DCRs), and 1-year overall survival (OS) rates, and a random-effects model was used to estimate the standardized mean differences (SMDs) with 95 % CI for quality or life (QOL), median survival time (mST) and progression-free survival (PFS).

RESULTS

Reports of 14 randomized controlled trials involving 1451 patients were included in the analysis. Among them, 739 patients received CHMs, and 712 patients received chemotherapy alone. The ORR (RR = 1.37, 95 % CI [1.20-1.58], p =  .000), DCR (RR = 1.13, 95 % CI [1.07-1.21], p = 0.000), QOL (SMD = 1.47; 95 % CI [0.30-2.64]; p = 0.014), mST (SMD = 1.62; 95 % CI [1.15-2.08];p =  .000), and 1-year OS rate (RR = 1.24, 95 % CI [1.05-1.47], p = 0.01) were higher in patients with NSCLC who received CHMs than in those who received only chemotherapy. However, the CHM group was not found to have a higher median PFS (SMD = 1.27, 95 % CI [-0.22-2.78], p =  .095) than the chemotherapy group. Publication bias for ORR and DCR was indicated by funnel plot. For the efficacy endpoint, no evidence of a lack of robustness was found, according to the sensitivity analysis. These results must be interpreted with caution due to differences in the designs of the trials and patients' characteristics, and also due to the presence of missing data.

CONCLUSIONS

Our study found that higher ORR, DCR, QOL, mST and 1-year OS rate were associated with CHM use as an adjuvant to chemotherapy. Although these results require further confirmation, CHMs apparently have potential therapeutic value for patients with advanced NSCLC.

Patient-reported quality of care in anthroposophic and integrative medicine: A scoping review

OBJECTIVE

To investigate how, and to what extent, patient-reported quality of care is measured in Anthroposophic and Integrative Medicine (AM/IM).

METHODS

Scoping review of evaluation studies of patient-reported quality of care and development studies of PREMs and/or PROMs in AM/IM, using five stages of Arksey's methodological framework.

SEARCH STRATEGY

Literature search in twelve relevant databases.

DATA EXTRACTION

Basic information, added categories: Focus; PREMs/PROMs; Evaluation measures; Patient involvement; Use of results.

RESULTS

Sixty-four included studies: 30 quantitative, 20 qualitative and 14 mixed-methods studies. Quantitative studies showed a wide variety of instruments and qualitative studies showed a meaningful list of evaluation themes. Most prevalent themes: Agency & Empowerment; Patient-provider relationship; Perceived effectiveness; Coping & Psychological functioning; Inner awareness; Meaning; and General wellbeing. Seven studies report concrete, coherent, patient-derived evaluation measures with emphasis on PROMs and/or PREMs.

CONCLUSION

Patient-reported quality of care was not measured in a standardised way. Knowledge gap: in general, quantitative studies lack patient-derived measures and qualitative studies lack development of concrete evaluation measures. Many AM/IM evaluation aspects connect with patient-centred care.

PRACTICE IMPLICATION

The international field of AM/IM would benefit from the development of a core set of validated PROMs and PREMs to further enhance its scientific underpinning.

Acupuncture and related interventions for carpal tunnel syndrome: systematic review

OBJECTIVE

To synthesize evidence on the effectiveness of acupuncture and related therapies for primary carpal tunnel syndrome (CTS) by conducting a systematic review of randomized controlled trials (RCTs).

DATA SOURCES

Nine databases were searched for potential RCTs from their inception till July 2019.

REVIEW METHODS

RCTs which reported at least one of the three outcomes were included: symptom severity, functional status and pain. Included RCTs were appraised using the Cochrane Risk of Bias Tool.

RESULTS

A total of 10 RCTs (728 participants) were included. Majority were at high risk of bias for blinding of participants, personnel and outcome assessors. When compared to conventional medications, manual acupuncture showed significant superior effect in reducing symptom than ibuprofen (mean difference (MD) on Symptom Severity Scale (SSS)) = -5.80, 95% confidence interval (CI): -7.95 to -3.65) and prednisolone (MD = -6.50, 95% CI: -10.1, -2.86). Electroacupuncture plus splinting was more effective in reducing symptom severity than splinting alone (SSS score: MD = -0.20, 95% CI: -0.36 to -0.03). Manual acupuncture showed significantly superior effect than ibuprofen in improving functional status (Functional Status Scale (FSS): MD = -1.84, 95% CI: -2.66 to -1.02). The combination of electroacupuncture and splinting showed more improvement in functional status compared to splinting alone (FSS: MD = -6.22, 95%CI: -10.7 to -1.71). Triple treatment of acupuncture, magnetic spectrum heat lamp and splinting showed stronger pain relief than splinting alone.

CONCLUSION

For both symptom relief and function improvement, manual acupuncture is superior to ibuprofen while electroacupuncture plus splinting outperforms splinting alone. Limited evidence showed electroacupuncture's potential role in pain reduction.

Impact of eHealth on medication adherence among patients with asthma: A systematic review and meta-analysis

BACKGROUND

Asthma is an important public health issue in the United States. eHealth technology offers a potential solution to asthma treatment adherence, but the relative effect of various types of eHealth interventions has not been systematically studied.

OBJECTIVES

To systematically review the effectiveness of eHealth in improving adherence to inhaled corticosteroids (ICS) among patients with persistent asthma, as well as the satisfaction of patients undergoing eHealth interventions.

METHODS

Literature searches were conducted in five databases in August 2018. Included studies were randomized controlled trials comparing eHealth interventions versus usual care in improving adherence among patients prescribed ICS for persistent asthma. Quantitative synthesis was performed using a random effects model.

RESULTS

Eighty records were identified after removal of duplicates. Fifteen trials were eligible for qualitative synthesis. Included trials utilized: social media (n = 1), electronic health records (n = 1), telehealth (n = 6), and mHealth (n = 7). Twelve trials were eligible for quantitative synthesis. Results show a small but significant overall effect of eHealth interventions on adherence to ICS (Standardized Mean Difference (SMD) = 0.41, 95%CI = 0.02-0.79). Among the different types of eHealth interventions, a significant improvement in adherence was observed for mHealth interventions compared to usual care in a pooled analysis of 4 trials (SMD = 0.96, 95%CI = 0.28-1.64). However, there was considerable heterogeneity among studies. Patient satisfaction was evaluated in 5 trials comparing telehealth (n = 2) and mHealth (n = 3) with usual care. Participants found the interventions to be helpful and satisfactory.

CONCLUSION

eHealth interventions, especially mHealth interventions, are effective and acceptable in improving patient adherence to ICS.