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Childhood cancer incidence in Pennsylvania counties in relation to living in counties with hydraulic fracturing sites.

AbstractOBJECTIVE:
Evaluate whether childhood cancer incidence is associated with counties with hydraulic fracturing (HF).
METHODS:
We compared cancer incidence in children in Pennsylvania counties before and after HF drilling began, using standardized incidence ratios (SIRs) and 95% confidence intervals (CIs).
RESULTS:
The total number of cancers observed was close to expected both before drilling began (SIR = 0.94; 95% CI, 0.90 to 0.99) and after drilling (SIR = 1.02; 95% CI, 0.98 to 1.07) for counties with oil and natural gas wells. Analyses for childhood leukemia were also unremarkable (SIR for leukemia before drilling = 0.97 [95% CI, 0.88 to 1.06]; SIR for leukemia after drilling = 1.01 [95% CI, 0.92 to 1.11]). A slightly elevated SIR was found for central nervous system tumors after drilling (SIR = 1.13; 95% CI, 1.02 to 1.25). This was because of a slight excess in those counties with the fewest number of wells.
CONCLUSIONS:
This study offers comfort concerning health effects of HF on childhood cancers.
AuthorsJon Fryzek, Susan Pastula, Xiaohui Jiang, David H Garabrant
JournalJournal of occupational and environmental medicine (J Occup Environ Med) Vol. 55 Issue 7 Pg. 796-801 (Jul 2013) ISSN: 1536-5948 [Electronic] United States
PMID23836020 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Natural Gas
Topics
  • Central Nervous System Neoplasms (epidemiology, etiology)
  • Child
  • Environmental Exposure (adverse effects)
  • Extraction and Processing Industry
  • Female
  • Humans
  • Incidence
  • Leukemia (epidemiology, etiology)
  • Male
  • Natural Gas
  • Oil and Gas Fields
  • Pennsylvania (epidemiology)
  • Residence Characteristics
  • SEER Program

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