Evidence map›Paper›PMID 33653742›Full record

ArticleBMJ open2021

Cost analysis of staged versus simultaneous bilateral total knee and hip arthroplasty using a propensity score matching.

Ji-Fei Hou, Chuan Hu, Yun Zhang, Li-Qi Tian, Yan-Zheng Liu, Chi Zhang, Jing Li

Abstract read
In one paragraph

Article in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

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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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Simultaneous versus staged bilateral total hip arthroplasty: a meta-analysis.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2026
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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

7 authors.

Ji-Fei Hou *The Affiliated Hospital of Qingdao University, QingDao, China.
Chuan Hu *The Affiliated Hospital of Qingdao University, QingDao, China.
Yun Zhang *The Affiliated Hospital of Qingdao University, QingDao, China 18186532881@163.com.ORCID http://orcid.org/0000-0002-1358-6667
Li-Qi Tian *The Affiliated Hospital of Qingdao University, QingDao, China.
Yan-Zheng LiuDepartment of Research, Qilu Hospital,Cheeloo College of Medicine,Shandong University, Jinan, China.
Chi ZhangThe Affiliated Hospital of Qingdao University, QingDao, China.
Jing LiThe Affiliated Hospital of Qingdao University, QingDao, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTotal joint arthroplasty (TJA), including total knee arthroplasty (TKA) and total hip arthroplasty (THA), is required for many patients. This study aimed to evaluate the medical costs, length of stay (LOS), blood transfusion and in-hospital complications in patients undergoing simultaneous and staged TJA.

methodsAll patients who underwent primary bilateral TJA from 2013 to 2018 in our institute were included. The propensity score matching analysis was performed between simultaneous and staged TJA patients. The difference in medical costs, LOS, blood transfusion and in-hospital complications was compared between simultaneous and staged groups.

resultsExcept for materials fees and general therapy fees, medical costs (bed fees, general therapy fees, nursing care fees, check-up and laboratory test fees, surgical fees and drug fees) were significantly lower in the simultaneous TKA, THA and TJA group. The total average medical costs in simultaneous and staged TKA groups were $15 385 and $16 729 (p<0.001), respectively; THA groups were $14 503 and $16 142 (p=0.016), respectively; TJA groups were $15 389 and $16 830 (p<0.001), respectively. The highest and lowest costs were materials fees and nursing care fees. No significant differences were found for five common comorbidities and postoperative complications between the two subgroups. The simultaneous groups had a shorter LOS and the differences from the staged group for TKA, THA and the TJA group were 8, 6 and 8 days, respectively. The incidence of blood transfusion is higher for simultaneous groups and the difference from the staged group for TKA, THA and TJA is 32.69%, 18% and 29.3%, respectively.

conclusionsOur results indicate that simultaneous TKA and THA with a shorter LOS would cost fewer (costs incurred during hospitalisation) than staged TKA and THA. Complication rates were not affected by the choice for staged or simultaneous arthroplasty, but the incidence of blood transfusion was higher in the simultaneous groups.

Indexed as

Arthroplasty, Replacement, HipArthroplasty, Replacement, KneeCosts and Cost AnalysisDatabases, FactualHumansLength of StayPostoperative ComplicationsPropensity ScoreRetrospective Studieshealth economicshipkneeorthopaedic & trauma surgery

Identifiers

PMID33653742
PMCPMC7929812

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