Risk of Breast Cancer among Female Teachers of Physical Education and Languages
- 1 January 1992
- journal article
- research article
- Published by Taylor & Francis in Acta Oncologica
- Vol. 31 (2), 201-204
- https://doi.org/10.3109/02841869209088903
Abstract
A retrospective follow-up study on 924 physical education (PE) and 3 239 language (L) teachers was performed to study whether life-long high physical activity affects the risk of breast cancer. The Finnish Cancer Registry found 128 malignant breast cancers among these women in a follow-up during 1967–1987. The standardized incidence ratio (SIR) for all PE teachers was 1.28 (n.s.) and for L teachers 1.59 (p < 0.001). Before the menopause (below age 50) SIR for PE teachers was 0.93 (n.s.) and for L teachers 1.51 (p < 0.05). These results suggest that before menopause the risk of breast cancer in physically active PE is smaller than in the less active L. A Poisson regression analysis, taking into account the reproductive factors together with age and observation period, did not show any significant difference between PE and L teachers, probably due to the relatively small number of cases (n = 22) in the PE teacher group.Keywords
This publication has 9 references indexed in Scilit:
- Some endocrine characteristics of early menarche, a risk factor for breast cancer, are preserved into adulthoodInternational Journal of Cancer, 1989
- The effects of moderate physical activity on menstrual cycle patterns in adolescence: Implications for breast cancer preventionBritish Journal of Cancer, 1987
- Cancers of affluence: Positive social class gradient and rising incidence trend in some cancer formsSocial Science & Medicine, 1987
- Lower prevalence of breast cancer and cancers of the reproductive system among former college athletes compared to non-athletesBritish Journal of Cancer, 1985
- Do regular ovulatory cycles increase breast cancer risk?Cancer, 1985
- Early Menarche, a Risk Factor for Breast Cancer, Indicates Early Onset of Ovulatory Cycles*Journal of Clinical Endocrinology & Metabolism, 1983
- Oral contraceptive use and early abortion as risk factors for breast cancer in young womenBritish Journal of Cancer, 1981
- The endocrinology of breast cancerCancer, 1980
- Risk Factors of Breast Cancer in FinlandInternational Journal of Epidemiology, 1977