Hospital number (Population 100,000 pairs)  Average 7.3
Worst 1;

Kanagawa 4.3
Shiga 4.5
Shizuoka 4.9
Chiba 5.0
Nara 5.1
Worst 2;

Saitama 5.3
Aichi 5.3
Yamagata 5.5
Gifu 5.5
Tokyo 5.6
   Best 1;

Kouchi 18.1
Kagoshima 16.3
Tokushima 16.0
Oita 13.4
Miyazaki 13.3
Best 2;

Saga 13.2
Kumamoto 12.3
Nagasaki 11.6
Hokkaido 11.2
Fukui 11.2