Evidence map›Paper›PMID 32208386›Full record

ArticleObesity facts2020

Specific Health Knowledge and Health Literacy of Patients before and after Bariatric Surgery: A Cross-Sectional Study.

Hinrich Köhler, Renata Dorozhkina, Kerstin Gruner-Labitzke, Martina de Zwaan

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Obesity facts, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

9 citing papers in PubMed, 18 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Mental Health After Childbirth in Women with Previous Bariatric Surgery: The SPOtMom Pilot Study.Experimental and clinical endocrinology & diabetes : official journal, German Society of Endocrinology [and] German Diabetes Association · 2025
    Observational
  5. Article
  6. Article
  7. Article
  8. The impact of bariatric surgery on eustachian tube dysfunction.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2021
    Article
  9. 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

4 authors at 1 institution in 1 country.

Hinrich KöhlerDepartment of General, Abdominal, and Bariatric Surgery, Herzogin Elisabeth Hospital, Braunschweig, Germany, hinrichkoehler@gmx.de.
Renata DorozhkinaDepartment of General, Abdominal, and Bariatric Surgery, Herzogin Elisabeth Hospital, Braunschweig, Germany.
Kerstin Gruner-LabitzkeDepartment of General, Abdominal, and Bariatric Surgery, Herzogin Elisabeth Hospital, Braunschweig, Germany.
Martina de ZwaanDepartment of Psychosomatic Medicine and Psychotherapy, Hannover Medical School, Hannover, Germany.
Medizinische Hochschule Hannover · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIt is an important condition for adequate weight loss and prevention of adverse events that bariatric surgery (BS) candidates possess good specific health knowledge. There is a paucity of standardized instruments to evaluate the specific health knowledge of patients before and after BS. Therefore, we developed a 32-item multiple-choice test covering the main aspects of life which are important after BS, and investigated the correlation of specific health knowledge with health literacy, level of depression and anxiety, percentage of excess weight loss, and specific complications of BS in postoperative patients.

methodsTwo groups participated in the cross-sectional study: the preoperative group (n = 109) was recruited from candidates for BS (gastric bypass or sleeve gastrectomy), the postoperative group (n = 110) was recruited from patients 12-74 months after BS (average 33 months, SD = 16.5). Both groups had completed a preoperative multimodal training program. Specific health knowledge was assessed with a newly developed knowledge questionnaire. Health literacy was evaluated with the short version of the European Health Literacy Survey (HLS-EU-Q16). The 9-item Patient Health Questionnaire (PHQ-9) and the 7-item Generalized Anxiety Scale (GAD-7) were used to assess the levels of depression and anxiety.

resultsThe pre- and postoperative group did not differ with regard to the number of correctly answered questions on the knowledge questionnaire, with 75% correct answers in both groups (p = 0.059). No correlations were found with health literacy (p = 0.498) and levels of depression (preoperative group: p = 0.279; postoperative group: p = 0.242) and anxiety (preoperative group: p = 0.866; postoperative group: p = 0.119). In postoperative patients specific health knowledge was not associated with the weight loss achieved (p = 0.437).

conclusionThe newly designed knowledge questionnaire can be useful for screening specific knowledge of BS patients at different time points.

Indexed as

KnowledgePatient Education as TopicAdultBariatric SurgeryCross-Sectional StudiesFemaleHealth LiteracyHumansMaleMiddle AgedObesityPostoperative PeriodSurveys and QuestionnairesWeight LossYoung AdultBariatric surgeryMetabolic surgeryPatient educationSpecific knowledge

Identifiers

PMID32208386
PMCPMC7250322
OpenAlexW3012627110

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.