Do patients with chronic low-back pain experience a loss of health-related quality of life? A protocol for a systematic review and meta-analysis
Bibliographic record
Abstract
INTRODUCTION: Health-related quality of life in chronic low back pain (LBP) is an important issue since various individual factors such as perceived loss of autonomy, inability to continue daily life and anxiety can contribute to maintenance or deterioration of this condition. Health-related quality of life is also important because it can predict the probability of recovery or recrudescence over time. In the literature, there is no systematic review on this topic. The present paper describes a protocol of the first systematic review and meta-analysis aimed at summarising the data on health-related quality of life in patients with chronic LBP compared with healthy controls. Gender, age and comorbidity of psychiatric disorders (mood or anxiety disorders) will be explored as moderators. Studies will be included if they used a case-control design comparing adults with chronic LBP to healthy controls on health-related quality of life through validated interviews/questionnaires. METHODS AND ANALYSIS: According to Preferred Reporting Items for Systematic Reviews and Meta-Analyses, a systematic review and meta-analysis will be conducted from 10th to 17th January 2020. Independent reviewers will search published/unpublished studies through electronic databases (Scopus, PubMed, EMBASE and the Cochrane Library) and additional sources, will extract the data and assess the methodological quality through the Newcastle-Ottawa Scale. Random-effect meta-analysis will be carried out by calculating effect sizes as Cohen's d indices. Publication bias will be assessed and moderators of the effect sizes will be investigated through weighted least squares meta-regression.The knowledge whether health-related quality of life is better or worse as a function of some individual characteristics may suggest personalised care pathways according to a precision medicine approach. ETHICS AND DISSEMINATION: The current review does not require ethics approval. The results will be disseminated through publications in peer-reviewed journals. PROSPERO REGISTRATION NUMBER: CRD42019131749.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.101 | 0.125 |
| Meta-epidemiology (narrow) | 0.007 | 0.005 |
| Meta-epidemiology (broad) | 0.023 | 0.037 |
| Bibliometrics | 0.012 | 0.011 |
| Science and technology studies | 0.004 | 0.004 |
| Scholarly communication | 0.007 | 0.007 |
| Open science | 0.006 | 0.005 |
| Research integrity | 0.009 | 0.007 |
| Insufficient payload (model declined to judge) | 0.052 | 0.006 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".