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*