Evidence map›Paper›PMID 18288315›Full record

ArticleEnvironmental health perspectives2008

DDE, a degradation product of DDT, and duration of lactation in a highly exposed area of Mexico.

Lea A Cupul-Uicab, Beth C Gladen, Mauricio Hernández-Avila, Jean-Philippe Weber, Matthew P Longnecker

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

14 citing papers in PubMed, 34 citations in OpenAlex.

  1. Endocrine-disrupting chemicals and breastfeeding duration: a review.Current opinion in endocrinology, diabetes, and obesity · 2020
    Review
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Exposure to chemical mixtures in Mexican children: high-risk scenarios.Environmental science and pollution research international · 2013
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. 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

5 authors at 3 institutions in 3 countries.

Lea A Cupul-UicabCenter for Population Health Research, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
Beth C Gladen
Mauricio Hernández-Avila
Jean-Philippe Weber
Matthew P Longnecker
Instituto Nacional de Salud Pública · MXInstitut National de Santé Publique du Québec · CANational Institutes of Health · US

Funding

Study of Health Effects of DDT in MexicoZIAES044009 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI SANDLER, DALE P · 2009 to 2017
$312k
Intramural NIH HHSNIEHS NIH HHS N01 ES 15467
6 · The paper itself

Abstract

backgroundHigher levels of 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (DDE), the major degradation product of 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane (DDT), have been related to shorter duration of breast-feeding in previous studies. If DDE truly shortens lactation, this has public health importance regarding infant mortality and the use of DDT for malaria control.

objectiveOur aim was to assess the relationship of maternal DDE concentrations with length of subsequent lactation.

methodsWe conducted a relatively large study in a highly exposed area of Mexico. We followed 784 mother-son pairs to determine length of lactation. DDE and DDT were measured in maternal serum obtained within a day of delivery. We fit proportional hazard models with and without stratifying by previous breast-feeding, because an association of DDE with duration of lactation among those who breast-fed previously could be attributed to a noncausal mechanism.

resultsCompared with those with DDE concentrations < or = 3.00 microg/g, the adjusted hazard ratios of weaning according to DDE category were, for concentrations 3.01-6.00 microg/g, 1.27 [95% confidence interval (CI), 1.04-1.55]; for concentrations 6.01-9.00 microg/g, 1.23 (95% CI, 0.92-1.63); and for concentrations > 9.00 microg/g, 1.17 (95% CI, 0.92-1.49). The corresponding ratios for women who previously breast-fed were 1.40 (95% CI, 1.06-1.87); 1.91 (95% CI, 1.24-2.93); and 1.76 (95% CI, 1.22-2.53). Those for women who had not breast-fed previously were 1.14 (95% CI, 0.86-1.52); 0.90 (95% CI, 0.61-1.31); and 0.91 (95% CI, 0.66-1.26).

conclusionsData from our relatively large study in a highly exposed area of Mexico did not support the hypothesis that exposure to DDE shortens length of lactation. The association seen in women who previously breast-fed was likely attributed to a noncausal mechanism. Nonetheless, whether DDT has other important adverse effects on humans is still an open question.

Indexed as

AdolescentAdultDDTDichlorodiphenyl DichloroethyleneEnvironmental ExposureFemaleHumansLactationMexicoPregnancyProportional Hazards ModelsDDTDichlorodiphenyl Dichloroethylenebreast-feedingDDEDDTinfantlactation

Identifiers

PMID18288315
PMCPMC2235222
OpenAlexW2051685525

What OpenQuestion holds

Textmetadata
LicenceCC0
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.