2010 | 2011 | 2012 | Chi-square value | p level | |
Ken-poku [n (%)] | 152 (25.17)a | 164 (26.89)a | 87 (14.36)b | 284.22 | p < 0.01 |
Z | 2.19 | 3.46 | −5.65 | ||
Ken-chu [n (%)] | 180 (29.80) | 191 (31.31) | 203 (33.50) | ||
Z | −1.12 | −0.15 | 1.27 | ||
Ken-nan [n (%)] | 35 (5.79) | 30 (4.92)b | 59 (9.74)a | ||
Z | −1.22 | −2.28 | 3.50 | ||
Aizu [n (%)] | 133 (22.02)a | 22 (3.61)b | 144 (23.76)a | ||
Z | 4.54 | −10.48 | 5.97 | ||
Minami-Aizu [n (%)] | 10 (1.66) | 0 (0.00)b | 15 (2.48)a | ||
Z | 0.73 | −3.58 | 2.85 | ||
Soso [n (%)] | 4 (0.66)b | 99 (16.32)a | 17 (2.81)b | ||
Z | −7.19 | 11.76 | −4.60 | ||
Iwaki [n (%)] | 67 (11.09) | 90 (14.75)a | 62 (10.23) | ||
Z | −0.87 | 2.53 | −1.67 | ||
Outside [n (%)] | 23 (3.81) | 14 (2.30) | 19 (3.14) | ||
Z | 1.27 | −1.37 | 0.10 |