Sentence examples for age at radiation from inspiring English sources
We divided the cases by age at radiation into those exposed below the age of 40 years and those exposed between 40 and 50 years of age.
Median age at radiation exposure was 34 years, range 1 72 yers and median age at breast cancer diagnosis was 64 years range 39 79 years.
Because age at radiation is a major determinant of breast cancer risk, we examined whether younger age at irradiation was associated with a greater radiation effect in carriers.
This is consistent with the well-established modifying effects of age at radiation exposure; risk decreases with increasing age at exposure and is particularly low in post-menopausal women (Preston et al, 2002).
These results are in conformity with previous reports on BC risks among women who received radiotherapy during 1930 1970 for various benign disorders, in which this decreased markedly with age at radiation exposure (Shore et al, 1986; Tokunaga et al, 1987; Preston et al, 2002; UNSCEAR, 2008).
Variations in age at undergoing radiation and time since radiation treatment in our sample might reduce between-group differences.
Cancer-related variables, measured at baseline, included age at diagnosis, radiation therapy and chemotherapy (yes/no).
Similarly, the Panel considered that there was no age at which radiation therapy otherwise indicated should be omitted.
It appears that younger age at uterine radiation leads to greater adverse effects on uterine reproductive capacity, particularly in prepubertal girls.
Cases and controls did not differ significantly by urban versus rural residential status at the time of interview, age at first radiation exposure in the 30-km Chornobyl zone, or education; however, more cases than controls were proxy-interviewed (p < 0.001) (Table 1).
Differences between study results partly reflect differences in distributions of age at treatment, radiation dosage and duration of follow-up, but also caution must be exercised in interpretation of studies such as that by Bhatia Bhatiaa et al, 1996b), where follow-up to a fixed end-date is incomplete.
