Evidence map›Paper›PMID 29043088›Full record

ArticleAnnals of occupational and environmental medicine2017

The relationship between spontaneous abortion and female workers in the semiconductor industry.

Heechan Kim, Ho-Jang Kwon, Jeongbae Rhie, Sinye Lim, Yun-Dan Kang, Sang-Yong Eom, Hyungryul Lim, Jun-Pyo Myong, Sangchul Roh

Open access · goldAbstract read
In one paragraph

Article in Annals of occupational and environmental medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 21% 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

  1. Semiconductor Work and the Risk of Spontaneous Abortion: A Systematic Review and Meta-Analysis.International journal of environmental research and public health · 2019
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Pregnancy, childbirth, and puerperium outcomes in female firefighters in Korea.Annals of occupational and environmental medicine · 2020
    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

9 authors at 4 institutions in 1 country.

Heechan KimDepartment of Occupational and Environmental Medicine, Dankook University College of Medicine, 119 Dandae-ro, Dongnam-gu, Cheonan-si, Chungcheongnam-do 31116, Cheonan, Korea, Republic of.
Ho-Jang KwonDepartment of Preventive Medicine, Dankook University College of Medicine, Cheonan, South Korea.
Jeongbae RhieDepartment of Occupational and Environmental Medicine, Dankook University College of Medicine, 119 Dandae-ro, Dongnam-gu, Cheonan-si, Chungcheongnam-do 31116, Cheonan, Korea, Republic of.
Sinye LimDepartment of Occupational and Environmental Medicine, College of Medicine, Kyung Hee University, Seoul, Republic of Korea.
Yun-Dan KangDepartment of Obstetrics and Gynecology, Dankook University College of Medicine, Cheonan, South Korea.
Sang-Yong EomDepartment of Preventive Medicine and Medical Research Institute, Chungbuk National University College of Medicine, Cheongju, South Korea.
Hyungryul LimDepartment of Preventive Medicine, Dankook University College of Medicine, Cheonan, South Korea.
Jun-Pyo MyongDepartment of Occupational and Environmental Medicine, College of Medicine, Seoul St. Mary's Hospital, Catholic University of Korea, 222 Banpo-Daero, Seocho-gu, Seoul 06591, Seoul, Korea, Republic of.
Sangchul RohDepartment of Occupational and Environmental Medicine, Dankook University College of Medicine, 119 Dandae-ro, Dongnam-gu, Cheonan-si, Chungcheongnam-do 31116, Cheonan, Korea, Republic of.ORCID 0000-0003-4467-5416
Dankook University · KRChungbuk National University · KRKyung Hee University · KRThe Catholic University of Korea Seoul St. Mary's Hospital · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study investigated the relationship between job type and the risk for spontaneous abortion to assess the reproductive toxicity of female workers in the semiconductor industry.

methodsA questionnaire survey was administered to current female workers of two semiconductor manufacturing plants in Korea. We included female workers who became pregnant at least 6 months after the start of their employment with the company. The pregnancy outcomes of 2,242 female workers who experienced 4,037 pregnancies were investigated. Personnel records were used to assign the subjects to one of three groups: fabrication process workers, packaging process workers, and clerical workers. To adjust for within-person correlations between pregnancies, a generalized estimating equation was used. The logistic regression analysis was limited to the first pregnancy after joining the company to satisfy the assumption of independence among pregnancies. Moreover, we stratified the analysis by time period (pregnancy in the years prior to 2008 vs. after 2009) to reflect differences in occupational exposure based on semiconductor production periods.

resultsThe risk for spontaneous abortion in female semiconductor workers was not significantly higher for fabrication and packaging process workers than for clerical workers. However, when we stratified by time period, the odds ratio for spontaneous abortion was significantly higher for packaging process workers who became pregnant prior to 2008 when compared with clerical workers (odds ratio: 2.21; 95% confidence interval: 1.01-4.81).

conclusionsWhen examining the pregnancies of female semiconductor workers that occurred prior to 2008, packaging process workers showed a significantly higher risk for spontaneous abortions than did clerical workers. The two semiconductor production periods in our study (prior to 2008 vs. after 2009) had different automated processes, chemical exposure levels, and working environments. Thus, the conditions prior to 2008 may have increased the risk for spontaneous abortions in packaging process workers in the semiconductor industry.

Indexed as

KoreaOccupational exposureReproductive toxicitySemiconductor industrySpontaneous abortionWomen

Identifiers

PMID29043088
PMCPMC5632825
OpenAlexW2761558417

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.