Evidence map›Paper›PMID 21533729›Full record

ArticleNeurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology2011

Oral contraceptives in migraine therapy.

Gianni Allais, Ilaria Castagnoli Gabellari, Cristina De Lorenzo, Ornella Mana, Chiara Benedetto

Abstract read
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In one paragraph

Article in Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 2 pooled it
1.1field-weighted citation impact, top 24% 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

4 citing papers in PubMed, 2 syntheses or guidelines pooled it, 8 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Male and female sex hormones in primary headaches.The journal of headache and pain · 2018
    Review
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Gianni AllaisDepartment of Gynecology and Obstetrics, Women's Headache Center, University of Turin, Via Ventimiglia 3, 10126 Turin, Italy. gb.allais@tiscali.it
Ilaria Castagnoli Gabellari
Cristina De Lorenzo
Ornella Mana
Chiara Benedetto
University of Turin · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Even if sometimes combined oral contraceptives (COCs) can initiate or aggravate headaches, in particular migraine, the headaches generally tend to improve after the first months of COC use. If migraine persists, in many patients the attacks are more likely to occur during the pill-free week, and an oral contraceptive-induced menstrual migraine (OCMM) occurs. In case of OCMM, some hormonal manipulations are available, by eliminating or reducing the hormone-free interval (HFI), in order to prevent this estrogen-withdrawal headache. It is possible to use a continuous COCs regimen, to shorten the HFI to less than the traditional 7 days, to use a low-dose estrogen supplementation after the 21 days of COCs or to prescribe a progestogen-only pill (POP). Interestingly, the use of a POP is a safe option also for women suffering from migraine with aura (in which COCs are absolutely contraindicated) and a recent trial suggests that its use can reduce the frequency of migraine attacks and the duration of aura symptoms too.

Indexed as

Clinical Trials as TopicContraceptives, Oral, HormonalFemaleHumansMigraine DisordersContraceptives, Oral, Hormonal

Identifiers

PMID21533729
OpenAlexW2087075355

What OpenQuestion holds

Textmetadata
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.