Figure 2

Mean male gonadal dose and mean number of X-ray examinations experienced during the window of exposure. Mean male gonadal dose (mGy) and mean number of X-ray examinations experienced from 18 years of age until the beginning of the period of unprotected intercourse, according to male age at the beginning of the period of unprotected intercourse (n = 1110 pregnancies and periods of involuntary infertility lasting 12 months or more, among 704 couples living in Beaumont-Hague and around Saint-Brieuc, France). ■ Male gonadal dose (mGy). □ Number of X-ray examinations.