Evidence map›Paper›PMID 20368318›Full record

ArticlePediatrics2010

Blood lead levels and delayed onset of puberty in a longitudinal study of Russian boys.

Paige L Williams, Oleg Sergeyev, Mary M Lee, Susan A Korrick, Jane S Burns, Olivier Humblet, Julie DelPrato, Boris Revich, Russ Hauser

Abstract read
In one paragraph

Article in Pediatrics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
–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

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

27 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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.

Paige L WilliamsHarvard School of Public Health, Department of Biostatistics, Boston, MA 02115, USA. paige@hsph.harvard.edu
Oleg Sergeyev
Mary M Lee
Susan A Korrick
Jane S Burns
Olivier Humblet
Julie DelPrato
Boris Revich
Russ Hauser

Funding

Translational Research Support CoreP30ES000002 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI SUSAN A KORRICK · 1985 to 2026
$44.6M
Effects of Environmental Phthalates and Chemical Mixtures on Male Puberty and Semen QualityR01ES014370 · NIEHS · HARVARD SCHOOL OF PUBLIC HEALTH · PI HAUSER, RUSS B · 2006 to 2021
$8.2M
NIEHS NIH HHS ES00002NIEHS NIH HHS ES014370NIEHS NIH HHS P30 ES000002NIEHS NIH HHS R01 ES014370
6 · The paper itself

Abstract

objectiveWe evaluated the association of blood lead levels (BLLs) with pubertal onset in a longitudinal cohort of Russian boys.

methodsA total of 489 Russian boys were enrolled in 2003-2005, at 8 to 9 years of age, and were monitored annually through May 2008. Cox proportional-hazards models were used to evaluate the association of BLLs at enrollment with time to pubertal onset during follow-up monitoring.

resultsA total of 481 boys had BLLs, with a median of 3 microg/dL and 28% with values of > or =5 microg/dL. The proportion of pubertal boys increased with age, from 12% at age 8 to 83% at age 12 for testicular volume of >3 mL, from 22% to 90% for genitalia stage 2 or higher, and from 4% to 40% for pubic hair stage 2 or higher. After adjustment for potential confounders including BMI and height, boys with high BLLs (> or =5 microg/dL) had 24% to 31% reduced risk of pubertal onset, on the basis of testicular volume of >3 mL (hazard ratio [HR]: 0.73 [95% confidence interval [CI]: 0.55-0.97]; P = .03), genitalia staging (HR: 0.76 [95% CI: 0.59-0.98]; P = .04), and pubic hair staging (HR: 0.69 [95% CI: 0.44-1.07]; P = .10), compared with those with lower BLLs. Pubertal onset occurred 6 to 8 months later, on average, for boys with high BLLs, compared with those with BLLs of <5 microg/dL.

conclusionHigher BLLs were associated with later pubertal onset in this prospective study of peripubertal Russian boys.

Indexed as

AdolescentBody SizeChildCohort StudiesFeeding BehaviorHealth SurveysHumansLeadLead PoisoningLongitudinal StudiesMaleProportional Hazards ModelsPuberty, DelayedRussiaSexual MaturationSocioeconomic FactorsLead

Identifiers

PMID20368318
PMCPMC3111933

What OpenQuestion holds

Textmetadata
LicenceTDM
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.