2000~3000 (n = 31)
(M = 86.91 ± 8.95)
3000以上(n = 107)
(M = 86.65 ± 9.95)
1000~2000 (n = 14)
(M = 96.64 ± 13.40)
t = 0.022*
t = 0.012*