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. Author manuscript; available in PMC: 2021 Mar 1.
Published in final edited form as: Curr Environ Health Rep. 2020 Mar;7(1):13–29. doi: 10.1007/s40572-020-00266-5

Table 1.

Studies regarding agricultural occupational pesticide exposure and cancer: May 15, 2018 – May 14, 2019

Author Participants Exposures and Assessments Outcomes and Assessments Key Results (all confidence intervals at 95%)
Cancer
Lerro CC et al. April 2019 [19] Agricultural Health Study (AHS):
89,565 private and commercial pesticide applicators and spouses, from North Carolina and Iowa, recruited from 1993 to 1997
Self-administered questionnaires on farm life & agricultural practices, types of crops & livestock, pesticide use/use of >50 individual pesticide active ingredients Incident cancer cases from NC and IA state cancer registries All cancer sites:
SIR (private applicators)=0.91, CI 0.89 – 0.93
SIR (commercial applicators) =0.83, CI 0.76 – 0.92
Lip cancer:
SIR (private applicators)=2.22, CI 1.71 – 2.84
Prostate cancer:
SIR (private applicators)=1.15, CI 1.11 – 1.19
B-cell lymphomas overall:
SIR (private applicators)=1.12, CI 1.03 – 1.21
Chronic lymphocytic leukemia:
SIR (private applicators)=1.17, CI 1.00 – 1.36
Acute myeloid leukemia:
SIR (private applicators)=1.29, CI 1.03 – 1.59
Leon ME et al. March 2019 [20] Subset of the Agricultural Health Study (AHS), including: 57,310 private and commercial pesticide applicators from North Carolina and Iowa, recruited from 1993 to 1997
Agriculture and Cancer (AGRICAN):
181,747 active and retired farm workers in France, recruited from 2005–2007
Subset of the Cancer in the Norwegian Agricultural Population (CNAP), including: 147,134 farm holders in Norway, based on censuses in 1969, 1974, 1979, 1985, 1989
AHS: self-administered enrollment questionnaires on farm life & agricultural practices, types of crops & livestock, pesticide use/use of >50 individual pesticide active ingredients, 5 year follow-up questionnaires on pesticide use since enrollment
AGRICAN: self-administered questionnaires on cultivating 13 crops and raising 5 animal species and performance of pesticide treatment tasks, crossed with country-specific-crop-exposure matrices
CNAP: census data on type of crops and livestock produced the preceding year, acreage, technology, pesticide expenses and pesticide spraying equipment, crossed with country-specific-crop-exposure-matrices
First incident non-Hodgkin’s lymphoma (NHL) during follow-up:
AHS: North Carolina and Iowa cancer and mortality registries and the National Death Index
AGRICAN: French cancer and mortality registries and the National Death Index
CNAP: National Cancer Registry of Norway
NHL overall & ever use of terbufos: mHR(AGRICAN and AHS)=1.18, CI 1.00 – 1.39;
Chronic lymphocytic leukemia/small lymphocytic lymphoma & ever use of deltamethrin:
mHR (AGRICAN and CNAP)=1.48, CI 1.06 – 2.07
Diffuse large B-cell lymphoma & ever use of glyphosate: mHR=1.36, CI 1.00 – 1.85
Andreotti G et al. May 2018 [23] Subset of the Agricultural Health Study (AHS): 54,251 pesticide applicators from North Carolina and Iowa, recruited from 1993–1997, 63% of whom participated in a follow up phone interview 5 years after enrollment Ever/never use, lifetime days of use (days per year × number of years), and intensity-weighted lifetime days (lifetime days × intensity score) use of glyphosate from questionnaires at enrollment and follow-up Incident cancer cases from North Carolina and Iowa state cancer registries Highest quartile of glyphosate exposure to no exposure:
Total cancer:
RR=0.99, CI 0.91 – 1.08
Hematopoietic or lymphatic malignancies:
RR=1.00, CI 0.74 – 1.34
Non-Hodgkin lymphoma: RR=0.87, CI 0.64 – 1.20
Multiple myeloma:
RR=0.87, CI 0.45 – 1.69
Lerro CC et al. Sept 2018 [25] Subset of the Agricultural Health Study (AHS):
49,685 pesticide applicators from North Carolina and Iowa, recruited from 19931997, 63% of whom participated in a follow up phone interview 5 years after enrollment
Cumulative lifetime days (sum of days of alachlor use reported at enrollment through the year last farmed reported at follow-up) and intensity-weighted days (cumulative lifetime days multiplied by an intensity-weighting factor) from questionnaires at enrollment and follow-up on alachlor use Incident cancer cases from North Carolina and Iowa state cancer registries Laryngeal cancer & alachlor exposure:
RR (Quartile 2, 661–1762 intensity-weighted days compared to no exposure)=4.68, CI 1.95 – 11.23 RR (Quartile 3, 1763–5075 intensity-weighted days compared to no exposure)=6.04, CI 2.44 – 14.99 RR (Quartile 4, >5075 intensity-weighted days compared to no exposure)=7.10, 2.58 – 19.53
Boulanger M et al. May 2018 [27] Agriculture and Cancer (AGRICAN):
148,044 active and retired farm workers in France, recruited from 2005–2007
Self-administered questionnaires on lifetime history of agricultural activities, cultivating 13 crops and raising 5 animal species, performance of harvesting, pesticide application, seed treatment, seedling, and/or re-entry tasks Incident lung cancer cases from French cancer registries Adenocarcinomas & winegrowing:
HR (Ever vineyard farm work to never vineyard farm work)=1.27, CI 0.94 – 1.72
Small cell lung cancers & pea/field beans:
HR (Ever pesticide application to never pesticide application)=2.38, CI 1.07 – 5.28
Squamous cell carcinomas & beets:
HR (Ever pesticide application to never pesticide application)=1.47, CI 0.92 – 2.34
Squamous cell carcinomas & sunflowers:
HR (Ever harvester to never harvester)=1.61, CI 0.91 – 2.86
Squamous cell carcinomas & fruit-trees:
HR (Ever pruner to never pruner)=1.44, CI 0.92 – 2.27
Overall lung cancer & corn:
HR (Ever grower to never grower)=0.76, CI 0.62 – 0.92
Overall lung cancer & wheat/barley:
HR (Ever grower to never grower)=0.85, CI 0.70 – 1.04
Peil C et al. November 2018 [28] Agriculture and Cancer (AGRICAN):
181,842 active and retired farm workers in France, recruited from 2005–2007
Self-administered questionnaires on cultivating 13 crops and raising 5 animal species and occupational activities Incident central nervous system cancer cases (gliomas and meningiomas) from French cancer registries and the National Death Index CNS tumors & exposure to all carbamates:
HR=1.47, CI 1.03 – 2.10