Table 1 Study population
Number | Percent | |
|---|---|---|
Women who delivered at Kyushu University Hospital and resided in Fukuoka Prefecture | 695 | 100 |
Women who resided within a 20-km radius of the Yoshizuka monitoring station (the nearest station to Kyushu University Hospital) | 641 | 92.2 |
Women who resided near Yoshizuka station or one of the four other monitoring stations (as the nearest station to their respective residential postal code region) in Fukuoka city | 584 | 84.0 |
Women who resided in Fukuoka city | 433 | 62.3 |
Women who resided near Yoshizuka monitoring station (as the nearest station to their respective residential postal code region) | 279 | 40.1 |