Table 4

Reproductive factors in the Swedish population (1980) and in the female cabin crew (1946–96) together with estimates from a Nordic meta-analysis of relative risk of breast cancer due to reproductive factors22

Reproductive factorsRR*PopulationCabin crew
*Relative risks associated with reproductive factors in the Nordic countries.22
Number of children
    5 or more0.69821113.880.5
Age at birth of first child (y)