A pooled analysis of case-control studies of thyroid cancer. VII. Cruciferous and other vegetables (International)

Cristina Bosetti, Eva Negri, Laurence Kolonel, Elaine Ron, Silvia Franceschi, Susan Preston-Martin, Anne McTiernan, Luigino Dal Maso, Steven D. Mark, Kiyoiko Mabuchi, Charles Land, Fan Jin, Gun Wingren, Maria Rosaria Galanti, Arne Hallquist, Eystein Glattre, Eiliv Lund, Fabio Levi, Dimitrios Linos, Carlo La Vecchia

Research output: Contribution to journalArticle

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Abstract

Objective: To investigate the association between cruciferous and other vegetables and thyroid cancer risk we systematically reanalyzed the original data from 11 case-control studies conducted in the US, Asia, and Europe. Methods: A total of 2241 cases (1784 women, 457 men) and 3716 controls (2744 women, 972 men) were included. Odds ratios (OR) and the corresponding 95% confidence intervals (CI) were estimated for each study by logistic regression models, conditioned on age and sex, and adjusted for history of goiter, thyroid nodules or adenomas, and radiation. Summary ORs for all studies combined were computed as the weighted average of the estimates from each study. Results: A decreased risk for the highest level of cruciferous vegetable intake, as compared to the lowest, was observed in Los Angeles, Hawaii, Connecticut, southeastern Sweden, Tromsø, and Switzerland; the OR were above unity in Japan and Uppsala, whereas no material association was found in northern Sweden, Italy, or Greece. The OR values for all studies combined were 0.87 (95% CI 0.75-1.01) for moderate and 0.94 (95% CI 0.80-1.10) for high cruciferous vegetables intake. The results were similar in studies from iodine-rich areas and endemic goiter areas, and were consistent when the analysis was restricted to papillary carcinomas and women. The summary OR values for vegetables other than cruciferous were 1.04 (0.88-1.22) for moderate and 0.82 (0.69-0.98) for high consumption. Conclusions: This combined analysis indicates that cruciferous vegetables are not positively related to thyroid cancer risk. Their effect does not seem to be substantially different from that of other vegetables, which appear to be protective on this cancer.

Original languageEnglish
Pages (from-to)765-775
Number of pages11
JournalCancer Causes and Control
Volume13
Issue number8
DOIs
Publication statusPublished - Oct 2002

Fingerprint

Thyroid Neoplasms
Vegetables
Case-Control Studies
Odds Ratio
Confidence Intervals
Sweden
Logistic Models
Endemic Goiter
Thyroid Nodule
Los Angeles
Papillary Carcinoma
Greece
Goiter
Switzerland
Iodine
Italy
Japan
Radiation
Neoplasms

Keywords

  • Case-control studies
  • Diet
  • Meta-analvsis
  • Pooled analysis
  • Thyroid cancer
  • Vegetables

ASJC Scopus subject areas

  • Oncology
  • Epidemiology
  • Cancer Research

Cite this

A pooled analysis of case-control studies of thyroid cancer. VII. Cruciferous and other vegetables (International). / Bosetti, Cristina; Negri, Eva; Kolonel, Laurence; Ron, Elaine; Franceschi, Silvia; Preston-Martin, Susan; McTiernan, Anne; Dal Maso, Luigino; Mark, Steven D.; Mabuchi, Kiyoiko; Land, Charles; Jin, Fan; Wingren, Gun; Galanti, Maria Rosaria; Hallquist, Arne; Glattre, Eystein; Lund, Eiliv; Levi, Fabio; Linos, Dimitrios; La Vecchia, Carlo.

In: Cancer Causes and Control, Vol. 13, No. 8, 10.2002, p. 765-775.

Research output: Contribution to journalArticle

Bosetti, C, Negri, E, Kolonel, L, Ron, E, Franceschi, S, Preston-Martin, S, McTiernan, A, Dal Maso, L, Mark, SD, Mabuchi, K, Land, C, Jin, F, Wingren, G, Galanti, MR, Hallquist, A, Glattre, E, Lund, E, Levi, F, Linos, D & La Vecchia, C 2002, 'A pooled analysis of case-control studies of thyroid cancer. VII. Cruciferous and other vegetables (International)', Cancer Causes and Control, vol. 13, no. 8, pp. 765-775. https://doi.org/10.1023/A:1020243527152
Bosetti, Cristina ; Negri, Eva ; Kolonel, Laurence ; Ron, Elaine ; Franceschi, Silvia ; Preston-Martin, Susan ; McTiernan, Anne ; Dal Maso, Luigino ; Mark, Steven D. ; Mabuchi, Kiyoiko ; Land, Charles ; Jin, Fan ; Wingren, Gun ; Galanti, Maria Rosaria ; Hallquist, Arne ; Glattre, Eystein ; Lund, Eiliv ; Levi, Fabio ; Linos, Dimitrios ; La Vecchia, Carlo. / A pooled analysis of case-control studies of thyroid cancer. VII. Cruciferous and other vegetables (International). In: Cancer Causes and Control. 2002 ; Vol. 13, No. 8. pp. 765-775.
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AU - Bosetti, Cristina

AU - Negri, Eva

AU - Kolonel, Laurence

AU - Ron, Elaine

AU - Franceschi, Silvia

AU - Preston-Martin, Susan

AU - McTiernan, Anne

AU - Dal Maso, Luigino

AU - Mark, Steven D.

AU - Mabuchi, Kiyoiko

AU - Land, Charles

AU - Jin, Fan

AU - Wingren, Gun

AU - Galanti, Maria Rosaria

AU - Hallquist, Arne

AU - Glattre, Eystein

AU - Lund, Eiliv

AU - Levi, Fabio

AU - Linos, Dimitrios

AU - La Vecchia, Carlo

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N2 - Objective: To investigate the association between cruciferous and other vegetables and thyroid cancer risk we systematically reanalyzed the original data from 11 case-control studies conducted in the US, Asia, and Europe. Methods: A total of 2241 cases (1784 women, 457 men) and 3716 controls (2744 women, 972 men) were included. Odds ratios (OR) and the corresponding 95% confidence intervals (CI) were estimated for each study by logistic regression models, conditioned on age and sex, and adjusted for history of goiter, thyroid nodules or adenomas, and radiation. Summary ORs for all studies combined were computed as the weighted average of the estimates from each study. Results: A decreased risk for the highest level of cruciferous vegetable intake, as compared to the lowest, was observed in Los Angeles, Hawaii, Connecticut, southeastern Sweden, Tromsø, and Switzerland; the OR were above unity in Japan and Uppsala, whereas no material association was found in northern Sweden, Italy, or Greece. The OR values for all studies combined were 0.87 (95% CI 0.75-1.01) for moderate and 0.94 (95% CI 0.80-1.10) for high cruciferous vegetables intake. The results were similar in studies from iodine-rich areas and endemic goiter areas, and were consistent when the analysis was restricted to papillary carcinomas and women. The summary OR values for vegetables other than cruciferous were 1.04 (0.88-1.22) for moderate and 0.82 (0.69-0.98) for high consumption. Conclusions: This combined analysis indicates that cruciferous vegetables are not positively related to thyroid cancer risk. Their effect does not seem to be substantially different from that of other vegetables, which appear to be protective on this cancer.

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