Evidence map›Paper›PMID 28615422›Full record

SynthesisNeurology2017

Prognostic factors for chronic headache: A systematic review.

Katrin Probyn, Hannah Bowers, Fiona Caldwell, Dipesh Mistry, Martin Underwood, Manjit Matharu, Tamar Pincus, CHESS Team

Open access · hybridAbstract readSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in Neurology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 6 pooled it
8.7field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

54 citing papers in PubMed, 6 syntheses or guidelines pooled it, 128 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Katrin ProbynFrom the Department of Psychology (K.P., H.B., F.C., T.P.), Royal Holloway, University of London; Warwick Clinical Trials Unit (D.M., M.U.), Warwick Medical School, University of Warwick, Coventry; and Headache Group (M.M.), Institute of Neurology and The National Hospital for Neurology and Neurosurgery, Queen Square, London, UK. Katrin.probyn@rhul.ac.uk.
Hannah BowersFrom the Department of Psychology (K.P., H.B., F.C., T.P.), Royal Holloway, University of London; Warwick Clinical Trials Unit (D.M., M.U.), Warwick Medical School, University of Warwick, Coventry; and Headache Group (M.M.), Institute of Neurology and The National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.
Fiona CaldwellFrom the Department of Psychology (K.P., H.B., F.C., T.P.), Royal Holloway, University of London; Warwick Clinical Trials Unit (D.M., M.U.), Warwick Medical School, University of Warwick, Coventry; and Headache Group (M.M.), Institute of Neurology and The National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.
Dipesh MistryFrom the Department of Psychology (K.P., H.B., F.C., T.P.), Royal Holloway, University of London; Warwick Clinical Trials Unit (D.M., M.U.), Warwick Medical School, University of Warwick, Coventry; and Headache Group (M.M.), Institute of Neurology and The National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.
Martin UnderwoodFrom the Department of Psychology (K.P., H.B., F.C., T.P.), Royal Holloway, University of London; Warwick Clinical Trials Unit (D.M., M.U.), Warwick Medical School, University of Warwick, Coventry; and Headache Group (M.M.), Institute of Neurology and The National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.
Manjit MatharuFrom the Department of Psychology (K.P., H.B., F.C., T.P.), Royal Holloway, University of London; Warwick Clinical Trials Unit (D.M., M.U.), Warwick Medical School, University of Warwick, Coventry; and Headache Group (M.M.), Institute of Neurology and The National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.
Tamar PincusFrom the Department of Psychology (K.P., H.B., F.C., T.P.), Royal Holloway, University of London; Warwick Clinical Trials Unit (D.M., M.U.), Warwick Medical School, University of Warwick, Coventry; and Headache Group (M.M.), Institute of Neurology and The National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.
CHESS Team
University of Warwick · GB

Funding

Department of Health RP-PG-1212-20018
6 · The paper itself

Abstract

objectiveTo identify predictors of prognosis and trial outcomes in prospective studies of people with chronic headache.

methodsThis was a systematic review of published literature in peer-reviewed journals

resultsWe identified 16,556 titles, removed 663 duplicates, and reviewed 199 articles, of which 27 were included in the review-17 prospective cohorts and 10 RCTs with subgroup analyses reported. There was moderate-quality evidence indicating that depression, anxiety, poor sleep and stress, medication overuse, and poor self-efficacy for managing headaches are potential prognostic factors for poor prognosis and unfavorable outcomes from preventive treatment in chronic headache. There was inconclusive evidence about treatment expectations, age, age at onset, body mass index, employment, and several headache features.

conclusionsThis review identified several potential predictors of poor prognosis and worse outcome postinterventions in people with chronic headache. The majority of these are modifiable. The findings also highlight the need for more longitudinal high-quality research of prognostic factors in chronic headache.

Indexed as

Headache DisordersHumansPrognosis

Identifiers

PMID28615422
PMCPMC5513814
OpenAlexW2626090714

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.