Beware selection bias.

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.

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.

Who cites it

3 citing papers in PubMed.

1. Maternal and neonatal trauma following operative vaginal delivery.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2022
   Article
2. Arthroscopic ankle fusion only has a limited advantage over the open operation if osseous operation type is the same: a retrospective comparative study.Journal of orthopaedic surgery and research · 2020
   Article
3. The authors reply to "The end of forceps deliveries?" and "Beware selection bias".CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2017
   Article

Corrections and comments

• Commented on by
  The authors reply to "The end of forceps deliveries?" and "Beware selection bias".2017
• Comment on
  Perinatal and maternal morbidity and mortality after attempted operative vaginal delivery at midpelvic station.2017

Authors and funding

5 authors.

Funding

No grant is acknowledged in the PubMed record.

Abstract

PubMed holds no abstract for this paper.

Indexed as