Evidence map›Paper›PMID 25888516›Full record

ArticleBMC gastroenterology2015

Epidemiology of appendicitis and appendectomy for the low-income population in Taiwan, 2003-2011.

Kai-Biao Lin, Chien-Lung Chan, Nan-Ping Yang, Robert K Lai, Yuan-Hung Liu, Shun-Zhi Zhu, Ren-Hao Pan

Open access · goldAbstract read
In one paragraph

Article in BMC gastroenterology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

21 citing papers in PubMed, 50 citations in OpenAlex.

  1. Global Incidence of Appendectomy: A Population-Based Study of the Organisation for Economic Co-operation and Development.Annals of surgery open : perspectives of surgical history, education, and clinical approaches · 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 at 3 institutions in 2 countries.

Kai-Biao LinSchool of Computer & Information Engineering, Xiamen University of Technology, Xiamen, 361024, China. kblin@xmut.edu.cn.
Chien-Lung ChanDepartment of Information Management, Yuan Ze University, Taoyuan, 32003, Taiwan. clchan@saturn.yzu.edu.tw.
Nan-Ping YangManagement Center, Keelung Hospital, Ministry of Health and Welfare, Keelung City, Taiwan. yang.nanping@gmail.com.
Robert K LaiDepartment of Computer Science and Engineering, Yuan Ze University, Taoyuan, 32003, Taiwan. krlai@cs.yzu.edu.tw.
Yuan-Hung LiuDepartment of Computer Science and Engineering, Yuan Ze University, Taoyuan, 32003, Taiwan. y60130@ms26.hinet.net.
Shun-Zhi ZhuSchool of Computer & Information Engineering, Xiamen University of Technology, Xiamen, 361024, China. szzhu@xmut.edu.cn.
Ren-Hao PanInnovation Center for Big data and Digital Convergence, Yuan Ze University, Taoyuan, 32003, Taiwan. Pan@51donate.com.
Yuan Ze University · TWXiamen University of Technology · CNMinistry of Health and Welfare · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlthough numerous epidemiological studies on appendicitis have been conducted worldwide, only a few studies have paid attention to the effect of socioeconomic status on appendicitis, particularly studies focusing on the low-income population (LIP).

methodsWe analyzed the epidemiological features of appendicitis in Taiwan using data from the National Health Insurance Research Database from 2003 to 2011. All cases diagnosed as appendicitis were enrolled.

resultsBetween 2003 and 2011, 2,916 patients from the LIP and 209,206 patients from the normal population (NP) were diagnosed with appendicitis. Our finding revealed that the ratios of comorbidities, complicated appendicitis, and readmissions in LIP patients were slightly higher than those of NP patients. LIP patients were more likely to live in suburban and rural areas, and hence a higher proportion of them were hospitalized in a district or regional hospital compared with NP patients. The crucially finding was that the overall incidence ratios of appendicitis, acute appendicitis, and perforated appendicitis in the LIP were substantially higher than those in the NP (36.25%, 35.33%, and 37.28%, respectively). The mean LOS in LIP patients was longer than that of NP patients. The overall case-fatality ratio of appendectomy in the LIP was higher when compared with the NP (0.41% versus 0.12%, p < 0.05). We also observed that appendicitis was occurred frequently in male patients, with a higher incidence for those aged 15-29 years in both the LIP and NP. The incidences of incidental appendectomy showed a decreasing trend in both the LIP and NP. Finally, a valuable discovery was that the total hospital cost was comparable between the laparoscopic appendectomy (LA) and open appendectomy (OA) (1,178 ± 13 USD versus 1,191 ± 19 USD, p < 0.05) in LIP patients because they saved more hospitalization costs than NP patients when the previous one chose the LA.

conclusionThis study confirmed that a lower socioeconomic status has significantly negative impact on the occurrence and treatment of appendicitis and appendectomy. In terms of hospital costs and LOS, LIP patients benefit more from the LA approach than they do from the OA approach in the treatment of appendicitis.

Indexed as

Academic Medical CentersAdolescentAdultAgedAge FactorsAppendectomyAppendicitisChildChild, PreschoolComorbidityFemaleHospital CostsHospitals, DistrictHumansIncidenceInfant

Identifiers

PMID25888516
PMCPMC4329676
OpenAlexW1968898197

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.