Table 1 Demographic features of patients with chronic hepatitis C treated with interferon (IFN) in nine regions of Japan
All | Hokkaido/Tohoku | Kanto | Shin-etsu | Hokuriku | Tokai | Kinki | Chugoku | Shikoku | Kyushu | P-value | |
|---|---|---|---|---|---|---|---|---|---|---|---|
n | 16854 | 2055 | 1142 | 781 | 1046 | 1170 | 3565 | 2599 | 716 | 3780 | |
Age (years)a | 57.9 ± 10.9 | 56.9 ± 10.5 | 56.5 ± 11.3 | 59.4 ± 10.1 | 60.2 ± 9.3 | 58.7 ± 10.4 | 57.3 ± 11.6 | 59.3 ± 10.7 | 57.8 ± 10.1 | 57.5 ± 11.1 | <0.001b |
The elderly (≥65 years) (%) | 30.2 | 26.1 | 24.9 | 34.4 | 35.3 | 32.5 | 29.9 | 34.9 | 26.7 | 28.7 | <0.001c |
Gender male (%) | 50.4 | 50.6 | 53.3 | 46.7 | 44.3 | 48.8 | 51.5 | 49.7 | 54.6 | 51.2 | <0.001c |
IFN-experienced cases (%) | 25.2 | 25.4 | 18.8 | 26.1 | 28.7 | 22.3 | 23.7 | 28.8 | 31.2 | 24.4 | <0.001c |
HCV Genotype 1/2/3/undetermined (%) | 63.5/34.7/ 0.2/1.7 | 64.2/32.8/ 0.0/2.9 | 56.4/42.0/ 0.1/1.5 | 68.5/29.4/ 0.0/2.1 | 67.3/30.9/0.0/1.8 | 63.1/35.1/ 0.2/1.6 | 65.0/32.1/ 0.4/2.5 | 64.2/34.9/ 0.4/0.5 | 56.7/41.9/ 0.1/1.3 | 62.5/36.4/ 0.0/1.0 | <0.001c |